API ATLAS

MCP servers, in one index

A directory of 5,809 Model Context Protocol servers, deduplicated across the official registry and public directories. Each record carries its category, authentication model and repository link, so you can pick a server before reading its documentation.

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5,809
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4,948
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“Full profiles” counts records that carry a written description and an outbound link — those get their own reference page. Records the sources left thin are still listed everywhere and link straight to the provider's own documentation, but they are not given a page of their own rather than publishing thousands of one-line documents.

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AI & Machine Learning APIs and MCP servers for inference, embeddings, agents and data science workflows. 1157 Developer Tools Source control, CI, code execution, package tooling and everything that sits in a build pipeline. 693 Data & Databases Database engines, data platforms, file systems and the knowledge/memory stores agent tools read from. 624 Search & Data Extraction Web search, scraping, crawling, aggregators and reference lookups for retrieval pipelines. 617 Finance & Payments Banking, market data, accounting, currency exchange and payment processing. 479 Communication Email, SMS, voice, telephony and team messaging. 244 Security & Identity Authentication, authorization, malware scanning, cryptography and identity providers. 242 Automation & IoT Browser and OS automation, smart-home control, embedded devices and industrial IoT. 150 Cloud & Hosting Cloud provider control planes, object storage, hosting and deployment APIs. 150 Productivity & Collaboration Documents, calendars, project management, forms and workplace collaboration. 138 Art, Design & Culture Image and asset libraries, typography, colour, photography and cultural collections. 124 Marketing Campaigns, audiences, attribution, SEO and growth tooling. 104 Business & Support CRM, customer support, HR, legal, real estate and back-office operations. 91 Text, Language & Speech Translation, dictionaries, sentiment, speech-to-text, text-to-speech and media conversion. 89 Analytics & Monitoring Metrics, product analytics, log and uptime monitoring, validation and tracking. 89 Location & Geocoding Geocoding, reverse geocoding, maps, routing and place data. 75 Transportation & Logistics Transit, flights, ride-hailing, vehicle data, shipping and delivery tracking. 74 Entertainment & Media Music, film, TV, podcasts, games and news media. 70 Science & Research Physics, chemistry, space, academic search and research datasets. 67 Social Media Social networks, feeds, posting, community and creator platforms. 55 Health & Medicine Clinical data, drug and terminology lookups, wellness and bioinformatics. 51 Sports & Fitness Scores, schedules, standings, betting odds and fitness tracking. 42 E-commerce Catalogues, carts, orders, shipping and retail platforms. 40 Weather & Environment Forecasts, climate, air quality, agriculture and earth observation. 15

MCP server reference

Showing 120 of 5,809
CTRLRun/ctrlrun Execution safety for AI agent actions. ctrlrun mcp-operator exposes the approval queue as tools (listpendingapprovals, approve, deny, resolve, plus receipts, effects, stats and inspectaction), so the human who has to answer a held action answers it from the assistant they are already in; read tools answer without a credential and write tools refuse without one that names a person. Separately, the gateway proxies any MCP server so every tool call is checked against a YAML policy before it runs: allow, hold for a human, or deny. Approvals are single-use and bound to the hash of the exact action, one logical effect runs at most once across processes and hosts, and an unknown outcome is…
paulf280-ui/solana-safe-sniper-mcp-template Pre-trade safety check for Solana tokens. checkcabalrisk traces holder funding to shared sources, flags same-block bundle buys, coordinated dumps and serial-launcher deployer history, and returns one Exit-Liquidity Risk verdict with a 0-100 score before an agent buys. Holder concentration counts only real wallets — LP pools and locked supply are excluded and labelled, not scored as a whale. The deployer is resolved from the token's Create transaction rather than the mutable creator field, which pump.fun's ownership transfer can rewrite. A second tool, checkwalletintoken, screens one specific wallet against one token — rank, share of supply, whether it funded a coordinated cluster, o…
hypeprinter007-stack/anchor-x402-mcp 16 paid wallet & utility tools on Base + Solana. 9 commodity primitives — OFAC sanctions screen, bundled wallet intel (balances + activity + identity + sanctions in one call), dual-chain hash anchoring, signed decision attestations, mainnet tx + calldata decode, ENS + Bonfida SNS resolve, USD prices, datetime parse. Plus an async due-diligence investigator (/v1/investigate, $7.77, signed markdown report + dual-chain anchor), a verifiable signed RNG (/v1/roll), and 5 universal LLM endpoints — roast, yes/no oracle with on-chain anchored verdict (Base + Solana), TL;DR (URL or text), aura read (color + tier + score), academic grade. Pay-per-call USDC via x402, no API keys, no accounts.…
MikeyPetrillo/Agent402 The headless browser, live web search, OCR, and durable wallet-keyed memory an agent's sandbox doesn't have - a catalog of 500+: 400+ pay-per-call tools + 100+ curated skill packs, every one tested, priced, and settled on-chain - rented per call via x402 (USDC on Base + 10 more chains (Solana, Polygon, Arbitrum, Monad, Celo, Avalanche, Sei, Optimism, Stellar, Algorand), or USDG on Robinhood Chain - 12 chains) or free with proof-of-work on the 200+ pure-CPU tools. Also an x402 Index + Smart Order Router that finds the cheapest healthy tool across the whole ecosystem. Hosted remote connector at agent402.tools/mcp. Every paid endpoint answers x402 and MPP (Machine Payments Protocol)…
jamesdfinance-dev/lazaretto-mcp Check whether anything you depend on is known malware, before an agent installs it. checklockfile takes a package-lock.json, yarn.lock or pnpm-lock.yaml and matches every pinned version against published malicious-package advisories in one call, free and with no API key, catching compromised releases like chalk@5.6.1 while leaving their clean releases alone. scanartifact adds deterministic behavioral analysis (no LLM in the serving path) for credential theft, exfiltration, obfuscation, prompt injection and install-time droppers, with the file, line and evidence that triggered it; verdicts are SHA-256-bound so you can re-verify what landed on disk. Paid scans settle at $0.03 USDC…
peopleworks/SignsofAI #⃣ - Explainable AI-writing detection and originality checking for teachers, students and writers, in English and Spanish. analyzeaiwriting returns a 0–100 score and every tell behind it — overused vocabulary, rhetorical crutches, syntactic patterns and sentence-rhythm burstiness — each with the matched text and a concrete fix, instead of a black-box percentage. checkoriginality returns the shared passages between documents as evidence; checkcitations cross-checks a bibliography against the text offline; comparetobaseline runs Burrows's Delta against the same writer's earlier work; inspectcharacters finds hidden and lookalike characters; writereport exports the evidence as a do…
sF1nX/x402station Preflight by x402station.io — infrastructure for x402 agentic commerce. Six capability directions (Discover/Evaluate/Pay/Monitor/Recover/Analyze). Agents call it before every PAYMENT-SIGNATURE to detect decoys, zombie endpoints, dead services, and price traps. Tools: preflight ($0.001), forensics ($0.001), catalogdecoys ($0.005), alternatives ($0.005), whatsnew ($0.001), buycredits ($0.50 = 1000 prepaid), watchsubscribe ($0.01) + free creditsstatus/watchstatus/watchunsubscribe. Plus free anonymous preflight-trial for self-test. Probes ~50k endpoints on agentic.market every 10 min. Open dataset: huggingface.co/datasets/x402station/preflight-dataset-v01. npx -y x402station-mcp.
sebastienrousseau/camt053-mcp ISO 20022 bank-statement parsing + reversing entries (camt.053 Bank-to-Customer Statement). 19 tools + 3 resources + 4 guided prompts across message-type discovery, return-reason lookup, schema introspection, IBAN/BIC/LEI validation, camt.053 parsing + XSD validation, Nov 2026 CBPR+ cliff readiness check, curated SEPA / CBPR+ / HVPS+ rulebook citation lookup, accounting-platform journal export (Xero + QuickBooks Online), LLM-driven entry classification via MCP Sampling, entry listing/filtering, and one-shot validated reversing-entry XML generation. Built on the camt053 library (100% line + branch coverage, SLSA Build L3 + PEP 740 attestations, Apache-2.0). Install pip insta…
taniwhaai/arai Policy enforcement for AI coding agents derived from existing instruction files (CLAUDE.md, .cursorrules, .windsurfrules, .github/copilot-instructions.md) — no separate YAML to maintain. Rules with prohibitive predicates (never, forbids, mustnot) emit permissionDecision: deny to block tool calls in Claude Code; advisory rules inject context. PostToolUse is correlated with PreToolUse to produce per-rule obeyed/ignored compliance verdicts in a local JSONL audit log. MCP tools — araiaddguard (register rules mid-session), arailistguards, arairecentdecisions — work in any MCP client (Claude Desktop, Cursor, Windsurf, Cline). No network on the hook hot path; opt-out anonymous tel…
rdanieli/tentra-mcp AI-native architecture platform for engineering teams. Describe a system in natural language (e.g. "payment service with Stripe, Kafka, PostgreSQL") → get an interactive typed diagram with 167 cloud components → export to 14 production frameworks (Java Spring Boot, Python FastAPI, Go chi, Rust Axum, .NET, Kotlin Ktor, Ruby Rails, Elixir Phoenix, Docker Compose, Terraform, Mermaid, ADR, and more). Drift detection (syncarchitecture) scores saved diagrams against live code 0–100 with a structured diff. 9 quality-lint rules catch orphans, SPOFs, god services. Also includes a secondary persistent code-graph layer for AI coding agents (free offline via npx tentra-mcp --local i…
cogdepot/mcp-server Official server for cogDepot, an anonymous broker where agents publish capability listings, negotiate terms, and form direct peer-to-peer deals backed by escrow and two-sided reputation. Five tools need no account at all - what the broker does and what it costs, how to get a key, a preview of the live board, any agent's public reputation record, and the marketplace's aggregate stats; with a key, read balance and escrow holds, negotiation threads, sealed deals and their reveal packages, and rate a counterparty. Prices come from the live discovery document at call time rather than being baked into the package, and an unreachable API is reported as stale rather than answer…
JeanFrancoisGagne/crapkit Read-only view of a repository's CRAP scores, one per function: ccn^2 (1 - cov)^3 + ccn, cyclomatic complexity joined to the branch coverage your own test command already writes. Twelve tools (getnextitem, listworklist, getfunctionbrief, getfunctionhistory, checkgate, checkconfig, listcoupledfiles, listduplicatefunctions, getratchetreport, gettrend, listruns, listclaims) hand the agent the worst function to fix next with its own source, its uncovered lines, its change-coupled files, its near-duplicates and a gate verdict on the edited file. None of the twelve runs a test suite or edits source files. Reads Python, TypeScript, JavaScript, Go, Rust, Swift, Java, C/C++ and…
Fabio662/yieldagentx402-sdks Custody-free, policy-gated, receipt-backed execution layer for AI agents. 16 MCP tools across 18 chains (Base, Ethereum, Bitcoin native, Starknet, NEAR, Solana, Stacks, BNB, Rootstock, Filecoin, Aptos, Sui, TON, Tron, XRPL, Stellar, Algorand). One NEAR MPC key authority signs on EVM and BTC, no private keys held anywhere. ShadeGuard policy enforcement, Intel TDX TEE attestation, HMAC-SHA256 receipts, Filecoin and BTFS anchored. x402 protocol settlement with 0.25 percent protocol fee. Public discovery with no signup needed: call yaxgetcapabilities without auth. Instant test key (5 USD cap, 7 day) via POST /api/apply. Install via npx agentx402-mcp-server.
ARADIA-systems/aradia-mcp-server Turnkey on-premise private Agentic AI systems by ARADIA on dedicated NVIDIA DGX hardware (Spark, Station, B200) with zero cloud data leakage. Operating since 1991, six tools cover hardware sizing (queryhardwarespecs), CapEx token ROI payback modeling (calculateroi), autonomous affiliate onboarding to earn 10% bounties (onboardpartner), and machine procurement via BTCPay Server (BTC/LN/USDT) or Stripe MPP Fiat (executeprocurementorder), plus trackorderstatus and querypartnerstats. Listed on the official MCP Registry (com.aradia/sovereign-hardware). Remote Streamable HTTP / SSE at https://aradia.com/api/mcp or https://aradia.com/api/a2a/mcp-endpoint.php.
ostapondo/Plonk A Mac window manager an agent can drive, plus ten more menu bar utilities behind the same icon: see every monitor and window, arrange a layout across displays in one call, snap a window into zones you drew yourself, save workspaces that relaunch apps into their places, keep-awake, measure the screen, screenshot a window by name even when it is buried behind other windows, annotate it, and read text off the screen on-device — handed back a box per line, so what was read can be pointed at. 20 tools, backed by a native menu bar app over a local-only loopback API; no cloud, no telemetry. npx -y plonk-mcp, or open the shipped .mcpb bundle in Claude Desktop.
cq27-dev/rag-rat Local repo-intelligence index and MCP server for coding agents — "what a repository knows about itself." Hybrid BM25 + vector semantic search, a tree-sitter code graph (callers/callees/imports across Rust, TS/TSX, Kotlin, C/C++, Python) with an optional compiler-grade SCIP oracle, queryable git/GitHub history, and typed, source-anchored repo memories (Invariant, Decision, Risk, …) that persist across sessions. Every result carries provenance — confidence labels and coverage warnings. Keeps source read-only; a background watcher keeps queries fresh. PreToolUse hooks augment grep and flag near-duplicate code as you write it. cargo install rag-rat
juyterman1000/entroly Auditable context control plane and MCP server for AI coding agents. Compresses context 70–95% (BM25 + entropy + dep-graph knapsack), stabilizes prompt prefixes for provider cache discounts, routes easy tasks to cheaper models (RAVS Bayesian router), and verifies answers locally with WITNESS hallucination guard (0.844 AUROC, $0, ~3 ms). MemoryOS adds local budget-aware working/episodic/semantic memory with decay, safety scanning, and durable persistence. 38 agent integrations (Cursor, Claude Code, Codex, Aider, and more). Ships as MCP server (entroly serve), HTTP proxy, or Python/Rust library. Apache-2.0, local-first. pip install entroly
2s-io/sdk Unified API for AI agents — 180+ tools across geocoding, weather (NWS), climate stations (NOAA), earthquakes (USGS), tides (NOAA), points of interest (OpenStreetMap), patents (USPTO ODP), US case law (CourtListener / Free Law Project), Federal Register, Wikipedia, scientific papers (arXiv / PubMed / Semantic Scholar), AI summarize / translate / extract / screenshot / image-describe, image compression, DNS / WHOIS, crypto address-validate + EVM gas oracle, OFAC sanctions screening, US Census ACS demographics, airport / ZIP lookup. Sub-cent to a few cents per call in USDC on Base via x402 — no API keys, no signup. npx -y @2sio/mcp
ni-c/carddav-mcp Contacts, groups and photos over CardDAV, on any server that speaks the standard — Radicale, Baikal, Nextcloud, SOGo, Fastmail, iCloud. 17 tools. Writes are read-modify-write over the parsed card guarded by ETags, so an X- property some phone wrote in 2014 survives an edit; both group conventions are read and the one written follows what the book already uses; an address book allowlist is enforced where ids are decoded rather than per tool. Card text is treated as untrusted input, because a card claiming somebody's bank details changed does not need the model to run a tool, only to be believed. npx -y @ni-c/carddav-mcp
carloshpdoc/memorydetective iOS leak hunting and performance investigation. Reads .memgraph (leaks(1)) and .trace (xctrace) files, classifies retain cycles against a 34-pattern catalog (SwiftUI, Combine, Swift Concurrency, UIKit, Core Animation, Core Data, SwiftData, RxSwift, Realm), surfaces a Swift fixTemplate snippet for each match, and bridges to source via SourceKit-LSP. Single-call build+boot+launch fixes the macOS 26.x leaks --outputGraph regression; replayScenario + captureScenarioState close the verify-fix loop. 31 MCP tools, 34 catalog resources, 5 investigation prompts. CI-gateable via verifyFix and compareTracesByPattern. Apache 2.0.
donnywin85/dex-data-mcp Live multi-chain DEX market data: USD price for any ERC-20 by ticker or contract address, per-venue liquidity depth, raw pool reserves, best execution venue, liquidity-risk depth class, and pre-trade price impact for a specific trade size — across BNB Chain, Polygon, Arbitrum, Base and Avalanche. Every quote returns the USD liquidity backing it and a confidence rating, and a price backed only by a dust pool is refused rather than returned. Free tier needs no API key and no wallet; beyond it, x402 micropayments in USDC on Base. On the official MCP Registry as io.github.donnywin85/dex-data-mcp. npx -y dex-data-mcp
ophis-fi/ophis Agent-first intent-based DEX aggregator (self-hosted CoW Protocol). Remote Streamable HTTP at https://mcp.ophis.fi/mcp, no auth, holds no keys. 12 tools: parseintent (natural-language swap to structured intent), resolvetoken (symbol to canonical address, fails closed), listchains, getquote, expectedsurplus, buildorder (bounded, ready-to-sign EIP-712 CoW order with the receiver pinned to the owner), submitorder, lookuptier (fee-rebate tier), getbalances, getportfolio, getgas, gettokenchart. Live across 11 EVM chains: Ethereum, Optimism, BNB Chain, Gnosis, Polygon, Base, Arbitrum, Avalanche, Plasma, Ink, Linea.
Eszetael/postgres-mcp-hardened Maintained Rust replacement for the archived @modelcontextprotocol/server-postgres. Writes are refused twice: sqlparser AST validation rejects mutating statements before execution, and the session runs defaulttransactionreadonly with a per-session statementtimeout — so the read-only transaction is the fallback, not the only defence. Single self-contained binary, stdio and Streamable HTTP, schema inspection, column redaction that survives renames and casts, an EXPLAIN cost guard, a hash-chained audit log with --verify-audit, optional OAuth 2.1 RS256, distroless image, signed releases for five platforms. MIT.
HelpCode-ai/anythingmcp Self-hosted source-available MCP gateway and API-to-MCP bridge. Converts REST, SOAP/WSDL, GraphQL, and SQL/NoSQL databases (PostgreSQL, MySQL, MariaDB, MSSQL, Oracle, MongoDB, SQLite) into MCP tools — no SDK, no code. Imports OpenAPI / Postman / WSDL / GraphQL specs; bridges multiple MCP servers behind one endpoint. Ships with 29 pre-built adapters (DHL, DATEV, Weclapp, Personio, Handelsregister, Shopware 6, VIES, OpenPLZ, Bundesbank, etc.). OAuth2 (PKCE + Client Credentials), Bearer, API Key, WS-Security, TLS certs. AES-256-GCM credential encryption, full audit log, per-user MCP API keys, tool-level RBAC.
ninetails-io/gnucash-mcp Full double-entry accounting on local GnuCash books: transactions (single and batch), invoices and bills, budgets, investment lots, scheduled transactions, reconciliation, and reports. Modular tool loading — role presets (bookkeeper, investor, freelancer, business) expose just the surface you need, from a 29-tool core up to 87 in all. Multi-currency and multi-book aware, with a plain-text audit trail of every write. Data never leaves your machine. Try it before installing: the browser sandbox opens three populated sample books (USD, CNY, EUR) with nothing to set up; when it clicks, clone and run with uv.
xsf0221/pattern-vista-cli End-of-day US equity technical data: how far each S&P 500 / Nasdaq 100 name has strayed from its own 200-day average, what share of the universe currently sits above it, and the chart patterns from each night's scan carried with their historical win-rate against SPY. Tool descriptions state their own caveats — data is end-of-day, never intraday, and a bucket win-rate is a property of hundreds of past signals rather than a probability for the next one. Free tier needs no card. On the official MCP Registry as io.github.xsf0221/pattern-vista. uvx --from 'pattern-vista[mcp]' pattern-vista-mcp
smythmyke/patent-search-mcp-server Patent intelligence and prior-art research for the AI Patent Search Generator. Eleven tools: full patent dossier (bibliography, claims, citations, family, classifications, examiner stats); USPTO prosecution-history file wrappers; AI Office Action analysis (rejection grounds, cited prior art, suggested response arguments); Boolean query generator; multi-strategy patent search (telescoping / onion-ring / faceted); similar-document ranking; citation graph (backward + forward, examiner-cited flagged); family lookup; and CPC classification lookup. Install: npx -y patent-search-mcp-server.
fixed-width/glass Gives a coding agent a build → see → interact → debug loop over the native GUI app it is writing: launch the app, screenshot it, read its accessibility tree, inject mouse/keyboard/gestures, tail its logs, and diff frames to confirm a change landed. Drives apps as an external black box with no app integration, so any toolkit or language works. 30 tools with text-first responses (element ids, diffs, waits) so the agent need not screenshot every step, plus optional sandboxing of the launched app. Backends: X11, Wayland, Windows, macOS, Android emulators, and the iOS Simulator.
bouncewatch/mcp Find out what changed at a company and when — funding, senior hires, partnerships, expansion, office openings, customer wins. 40+ event types, each carrying the date it happened and a 1-10 weight, so a funding round outranks a conference booth and you can set a floor that removes the noise. Ask in plain language ("which Dutch companies under 50 people raised in the last month") or put a watch on a company and get told the next time something happens there. 10 tools, 8 of them read-only. Hosted; connect via OAuth or an API key at https://api.bouncewatch.com/api/v1/mcp
AlvisoOculus/optionsahoy-mcp Multi-year equity-compensation optimization engine: returns the globally-optimal ISO/AMT exercise schedule, NSO sell-vs-hold decision, RSU vest plan, single-stock concentration sell-down, protective put / zero-cost collar pricing, and Section 1202 QSBS qualification verdict. Covers full federal tax code plus all 50 states + DC (ordinary brackets, long-term capital gains treatment, state AMT for CA/CO/CT/MN, FICA, NIIT). Remote HTTP MCP at https://optionsahoy.com/mcp (no auth, no install). Six tools, same engine as the in-browser calculators at optionsahoy.com/tools.
snenenenenenene/transita-mcp-server Visa eligibility matching across 102 immigration pathways in 15 countries. Scores a profile (citizenship, education, work history, income, goal) against official government criteria — points thresholds, salary floors, language requirements — and returns ranked matches with processing times, fees, PR timelines and links to the official source. Also compares pathways side-by-side and reports live intake status for round-based programmes (Express Entry, Australia SkillSelect). Remote endpoint https://transita.app/api/mcp, no key required, or npx @transita/mcp-server.
WCAG-Compliance/wcagc-mcp Deterministic axe-core accessibility scanning (WCAG 2.1 AA, EN 301 549, PDF/UA) through a wcagc account: scan any public URL or PDF, crawl a whole registered site, replay saved multi-step journeys, and read violation trends. Returns structured findings — rule, severity counts and the success criteria involved — so the assistant reasons over real results rather than guessing from markup. Every scan result carries an automated-coverage disclaimer instead of a score or a pass/fail verdict. Hosted at https://mcp.wcagc.com/mcp, or run it locally with npx -y @wcagc/mcp.
ilyautov/moysklad-mcp-ru MoySklad cloud ERP for Russian retail and wholesale: stock, products, orders, counterparties and profit/turnover/cash reports, plus document writes (supplies, shipments, invoices, returns) over the JSON API 1.2. 892 schema-driven methods reached through 8 generic meta-tools, kopecks converted to rubles, and a read/write/destructive safety gate that needs an explicit confirmation before a document is created and a second one before it is posted or deleted. PyPI (uvx moysklad-mcp-ru), one-click installer for Claude Desktop, Claude Code, Codex and OpenCode. Alpha.
project-feldspar-resources/feldspar-scan Free deterministic security scan of any public git repository, for agents and CI: vulnerable dependencies via OSV.dev (npm, pip/uv/poetry, Cargo, Go, Gemfile, composer), hard-coded secret patterns (redacted) and risky config lint, returned as file:line findings with a hashed result manifest. Hosted remote MCP at https://project-feldspar.com/mcp (no key, 5 scans/hour/IP, registry com.project-feldspar/scan), self-hostable stdlib-only Python server, CLI with a --fail-on gate and a composite GitHub Action. Built and operated by a disclosed autonomous AI agent. MIT.
vornicx/Midas Local-first memory for long-horizon AI agents with no LLM at ingest — $0 per message, zero data egress, verbatim source-traceable recall. Typed belief revision, selective forgetting, and a provenance guard that blocks memory-justified destructive actions unless user-confirmed. One midas init wires Claude Code, Cursor, Codex, and 6 more clients to one shared SQLite memory; local web inspector and hash-chained audit log. Benchmarked on LongMemEval/LoCoMo/BEAM with one-command repros — including published negatives. uvx midas-memory-mcp or npx -y midas-memory-mcp
ni-c/smtp-mcp Sends, replies to and forwards mail over plain SMTP, so it works with the mail account you already have. Sending is off until you name the recipients it may write to: every address in To, Cc and Bcc is checked against that allowlist before a connection is opened, and each message is then approved by a person through an MCP elicitation, with recipients and subject on their own labelled lines. There is no from parameter, so a model cannot write in a colleague's name. The counterpart to imap-mcp, in its own process with its own credentials. npx -y @ni-c/smtp-mcp
nimbus-agent/Nimbus Read-only access to a local index of your engineering stack: full-text search plus recent incidents, pull requests, deployments, DORA metrics and connector status. The index is built on your own machine from 94 developer and infrastructure services (GitHub, GitLab, Jira, Slack, PagerDuty, Datadog, Sentry, Snowflake and more) through first-party MCP connectors; credentials stay in the OS keystore. 21 tools (9 index reads, 12 agent briefs). Requires the Nimbus gateway (Homebrew/Scoop/winget/apt); run via npx -y @nimbus-dev/mcp or nimbus mcp-server --stdio.
foretak/registry-mcp Company data from national business registries for AI agents, one JSON shape per country. United Kingdom (Companies House): look up by company number, search by name, read the accounts and confirmation-statement due dates the register publishes. Norway (Brønnøysundregistrene / Enhetsregisteret): look up by organisasjonsnummer, search by name, check VAT (MVA) registration, compute statutory filing deadlines with the rule each one cites. Five read-only tools plus ChatGPT-connector search/fetch; hosted at https://api.foretak.dev/mcp or uvx registry-mcp.
gofrantic/frantic-mcp A public bounty board where AI agents do paid work. Claim funded bounties, deliver artifacts in the open, and get paid in USDC on Base only when a delivery is accepted, with every claim, judgment, and payout sealed to a public receipt ledger anyone can verify. Vendors hire the Town from the other side: post a task with its acceptance criteria and fund it in the same call. 14 tools across onboarding, posting, funding, claiming, delivery, and judgment. Remote Streamable HTTP at https://api.gofrantic.com/mcp, or local stdio via npx -y frantic-mcp.
Vasilispapg/claude-handoff Post-hoc session handoff and project memory for Claude Code: turns any session transcript — including crashed or usage-limit-hit ones — into one clean handoff.md another model continues from (ChatGPT, Gemini, or the next Claude), and distills a project's ENTIRE session history into one cited memory brief injected at every session start. MCP tools listsessions and handoff (LLM summaries only behind an explicit --allow-llm); zero dependencies, pure stdlib, secrets redacted from every output. pipx install claude-handoff, then claude-handoff --mcp.
dwgx/SmartCLI Drive full-screen terminal programs (vim, htop, lazygit) by reading the screen, not the byte stream: a live cell grid exposes which row is reverse-video selected, cursor position and alt-screen state, so waits are screen-state predicates instead of sleeps. The emulation is differentially tested against real tmux and GNU screen (cell-by-cell grid diffs plus a generative VT fuzz), which caught 12 emulation bugs including missing alternate-screen support. pip install smartcli-toolkit then smartcli-mcp, or uvx --from smartcli-toolkit smartcli-mcp.
vibeads/mcp Google Ads for local service businesses — plumbers, HVAC, dentists, roofers. Read tools score the account 0–100 across 6 dimensions, surface wasted spend in search terms, and list active diagnostics from VibeAds' 35+ optimization rules. Write tools (Pro/Max) draft a whole campaign (keywords, ad copy, ad groups), apply it, and execute one approved optimization at a time; anything that spends real money returns a link a human must approve in the browser, so the API key alone can never publish. One VibeAds API key, no OAuth: npx -y @vibeads/mcp
sand0vvv/hyperevm-mcp Read-only Hyperliquid / HyperEVM: every way to earn on HYPE in one table — liquid staking, lending with utilisation and max LTV, LP pools, and the HLP vault — with yield a pool earns separated from yield paid in emitted tokens. Also protocol TVL, fees actually paid, perp and spot markets, funding history, and order-book depth with a straight answer when a size will not fill. Where a source publishes a figure whose unit cannot be confirmed, the cell reads n/a instead. No keys, no signing, nothing to configure. npx -y @sand0vvv/hyperevm-mcp
sebastienrousseau/pacs008-mcp ISO 20022 FI-to-FI credit-transfer generation + validation (pacs.008 FI-to-FI Customer Credit Transfer, pacs.004 Payment Return, pacs.002 Status Report). 15 tools across message-type + scheme discovery, JSON Schema + rail-usage validation, validated XML generation, XSD validation, inbound parsing, the November 2026 structured-address cliff toolkit (classify/validate/repair/batch), and legacy SWIFT MT103 → pacs.008 conversion. Built on the pacs008 library (100% branch coverage, Apache-2.0). Install pip install pacs008-mcp, run pacs008-mcp.
ni-c/wikijs-mcp Search, read and edit a self-hosted Wiki.js 2.x, plus its assets, comments, users and groups (62 tools). Wiki.js' default search engine indexes only titles and descriptions, so searchpages names the active engine and greppages searches what is actually written in the pages. updatepage compares against the moment you read a page and refuses to overwrite an edit saved in between; surgical find-and-replace must match exactly once. Read-only mode, a write path scope, and confirmation tokens on everything destructive. npx -y @ni-c/wikijs-mcp
Jiangw2718i/frisk Screen the counterparty of an x402 payment before an agent pays it. One tool, screenpayment, runs deterministic checks — address sanity, dynamic-payTo swap detection, transport safety and your own spend policy — and returns allow/review/block with the reasons for the verdict. Advisory: it never holds funds, and your code decides. Runs entirely on your machine by default with no key, no account and no network call (MIT, 5 packages installed); set FRISKAPIKEY to answer the same tool from the hosted reputation graph instead. npx frisk-mcp
kao273183/mk-qa-master AI 測試大師 — end-to-end QA loop over MCP. Drives pytest / Jest / Cypress / Go / Maestro from one surface; analyzes URLs (Web DOM) or live mobile screens (maestro hierarchy) to extract testable modules, generates runnable pytest or Maestro YAML with real selectors (not # TODO stubs), runs with auto-retry, then writes a prioritized optimization-plan.md ranked by evidence (flaky vs broken vs coverage gap). Mobile-first: iOS Simulator, Android Emulator, real devices, and BlueStacks (QAANDROIDHOST=127.0.0.1:5555). Install via uvx mk-qa-master.
Zsadigzade/trainbud Talk to your Garmin Connect training data — activities, sleep, heart rate, recovery, body composition, stress, VO2 max, and a memory layer for goals and races. Findings are computed against your own 28-day baselines by detectors in code, not generated by the model, and an unworn night reads as unknown rather than a score of zero. Runs entirely on your machine: credentials in a local .env, SQLite cache, no account and no hosted service. Includes an optional Connect IQ watch app that asks from your wrist. Install: npx trainbud setup.
Battam1111/Myco Agent-first cognitive substrate with 18 manifest-driven verbs (germinate / eat / assimilate / sporulate / traverse / immune / molt / …) and 25 lint dimensions enforcing contract invariants mechanically (R1–R7). Cross-session / cross-project memory via a self-validating filesystem graph — AST + markdown-link derived, not embedding-based. Provider-agnostic by design: MP1/MP2 dims forbid LLM-SDK imports in the kernel and plugin tree. Editable-default install. Works with Claude Code, Cursor, Windsurf, Zed, VS Code, and any MCP client.
vatnode/vatnode-mcp Official MCP server for EU VAT validation via the EU Commission's VIES service + offline VAT rates for 45 European countries. Five tools: validatevatnumber (live VIES with company name, address, registration date, and optional consultation number for audit), getcountryvatrates, listeuvatrates, checkvatformat, listsupportedcountries. Four of five tools work offline without an API key (data bundled via eu-vat-rates-data). Open source MIT, every release signed with npm provenance via GitHub Actions OIDC. Install: npx -y vatnode-mcp.
uchit/mcp-regulated-ai-compliance Regulated-industry AI compliance knowledge as MCP. 6 tools (lookupcontrol · classifyusecase · crosswalk · walkplaybook · getantipattern · listregulations), 53 resources, 5 prompts. Covers EU AI Act, APRA CPS 230/234, NIST AI RMF, ISO 42001, AU AI Safety Standard (DISR Aug 2024), OWASP LLM Top 10, SLSA, SSDF, OAIC APPs, GDPR, DORA + 17 more frameworks. 56 controls × 28 regulations × 261 tools, 15 named anti-patterns, 20-entry crosswalk matrix. Apache 2.0 + CC BY 4.0 dataset. Install: npx -y @hellouchit/mcp-regulated-ai-compliance
ni-c/caldav-mcp Events, tasks and journal entries over CalDAV, on any server that speaks the standard — Radicale, Baikal, Nextcloud, SOGo, Fastmail, iCloud. 22 tools. Recurring events are expanded client-side rather than trusted to the server, a calendar allowlist is enforced where ids are decoded, writes are read-modify-write guarded by ETags, and deleting or changing a whole series asks a person first. Calendar text is treated as untrusted input, because anyone who can send an invitation can put text in your calendar. npx -y @ni-c/caldav-mcp
rudraneel93/mcp-guardian Security and governance proxy for MCP infrastructure. Enforces YAML-configurable policies (blocklists, rate limits, token budgets), tracks real token costs via tiktoken, monitors server health with live JSON-RPC probes. Features include OAuth 2.1/OIDC with RBAC, web dashboard with Prometheus metrics, payload normalization against encoding bypasses, semantic shell AST analysis, mTLS zero-trust networking, circuit breakers, and a formal STRIDE threat model. 168 tests across 16 suites. Install: npm install -g @mcp-guardian/server
20000419/fauxnix bash for AI agents on Windows via deterministic bash→PowerShell translation — no WSL, VM, or bash toolchain. MCP bash tool with GNU-style output, bash-style errors, coreutils exit codes, session-persisted cwd/env across calls, and per-file UTF-8/GBK sniffing (GBK files grep correctly, unlike Git Bash). Unsupported bash constructs fail loudly with the construct named; native commands (git/node/npm) pass through with argv quoting. npm install -g fauxnix-cli; verified with Claude Code, Codex, OpenCode, Kimi Code and Qwen Code.
astafford8488/agentaegis-mcp Security & trust layer for AI agents. Scan an MCP server or skill before you install it (scanmcpplugin, scanskill) — flags exfiltration, prompt-injection sinks, dangerous capabilities, install hooks and obfuscation → PROCEED/CAUTION/BLOCK. Plus vetendpoint (endpoint safety verdict before an agent calls or pays it) and 25 more tools: vuln scans, threat intel, compliance (SOC 2/ISO 27001/HIPAA), code security (SAST/secret/dependency), identity — 28 total. Per-call billing via API key or x402 USDC on Base; free discovery tier.
cleanor-app/cleanor-mcp Zero-auth hosted server with 22 read-only tools: optimize/convert images (WebP/AVIF/JPEG), paste-ready SVG QR codes, cited Cleanor Labs data on device storage capacity and next-gen image-format savings (AVIF/WebP/JPEG XL vs JPEG, HEIC conversion tax), plus 18 deterministic dev utilities LLMs get wrong (hash, HMAC, UUID, base64, JWT decode, JSON, regex, cron, unit & base convert, datetime, URL parse, diff, color, palette, slugify, count, SVG placeholder). No API key or signup; Streamable HTTP at https://mcp.cleanor.app/mcp.
FieldmodeLLC/scrapecheck-mcp Verify scraped data against the live source page: send a URL, the scraped field values, and what was asked, and get back an ed25519-signed verdict (pass, fail, or unverifiable). A claim is never certified unless the re-fetched page contains it, and anything unconfirmed is unverifiable, never pass; signatures verify offline against a published key. Pay-per-call x402 (USDC on Base) — $0.01 full verification, $0.002 presence check, free allowance per client, no API key or signup. Remote: https://scrapecheck-mcp.fly.dev/mcp.
anzy-renlab-ai/pronounce Community pronunciation dictionary for developer project / product / jargon names (kubectl, nginx, GIF, JSON, Pydantic, Knative, LaTeX — 1,848 entries). Each entry carries IPA, a General-American respelling, alternate readings where the pronunciation is contested, a source citation (creator interview / project FAQ / Wikipedia § Pronunciation), and a confidence level. Tools: pronounce(word), searchpronunciations(query), listpronunciations(category). Install: uvx pronounce-mcp. Live browse: <https://pronounce.renlab.ai>.
notDIRK/fds-mcp Freedom-of-information requests for Germany via FragDenStaat.de, the FOI portal built on froide. Finds the responsible authority from a place name and returns the evidence trail, reads the applicable act and its statutory deadline, tracks your own requests and their replies, and drafts new requests as local YAML checked against 25 rules before anything is sent. Four tools need no account. Submitting is guarded by five independent gates and defaults to a dry run, because the API sends immediately and cannot be undone.
DataCraftsmanAU/vineverse-mcp The Bible as a knowledge graph: 31,102 verses of the Berean Standard Bible, ~3,000 people, ~1,300 places with coordinates, ~3,000 Nave's topical themes, ~2,900 Strong's Hebrew lexemes, the 613 commandments, and 90,564 connections between them. 15 tools for scripture search, passage and interlinear lookup, cross references, genealogy, places near a point, and graph traversal. Public-domain sources, no API key. Hosted at https://vineverse.bible/api/mcp, or npx -y github:DataCraftsmanAU/vineverse-mcp for stdio clients.
gautam-u/sieve-mcp Local AI chat history secret scanner for macOS. Finds API keys and secrets leaked into Claude Code, Cursor, Copilot Chat, Cline, Codex, Gemini CLI, and other AI tool transcripts. 9 MCP tools: findings list with redacted previews, boolean secret detection (sievechecktext), placeholder-only redaction (sieveredacttext returns sieve://project/key, never raw values), vault-backed command execution, and scan health. Local-only stdio transport, macOS Keychain vault, no plaintext secrets in any tool response. Mac App Store.
laszlopere/mcp-molecules Chemistry toolbox computed from authoritative data: molecular weight / molar mass of any formula (nested groups, isotope labels, propagated NIST uncertainties, percent composition), isotope-distribution mass spectra (m/z peaks for a given charge), and name⇆formula lookup with isomer resolution. Element masses from the NIST Atomic Weights and Isotopic Compositions database; offline and deterministic, with an optional on-by-default online fallback (PubChem/Wikidata/EPA CompTox) that can be disabled. uvx mcp-molecules.
farukkolip/instapdown-mcp Instagram creator toolkit MCP with 16 tools: Reels / video / Story / carousel / photo / profile-pic downloaders, Reels-to-MP3 audio extractor, engagement health check + weighted engagement-rate calculator, live hashtag search + 25 curated niches + creator hashtag audit, 900 Reels hook templates by niche and country, 22 Unicode font styles, best-time-to-post for 17 markets (Buffer 2026 verified data), and a 750-date 2026 content calendar with per-market playbooks. Wraps instapdown.com public API — no auth required.
ihuzaifashoukat/x-use Multi-account X (Twitter) automation with no X API key: it drives a real Chrome session using your own cookies. 33 tools for posting, replies, keyword search, engagement, single-tweet reads that return images as MCP content, per-account personas, proxy pools, and a persistent scheduled-action queue. Draft-approval mode is on by default, so write tools return a draft and nothing goes live until you call approvedraft. Listed on the official MCP Registry. Install: pip install x-use-mcp, then x-use init and x-use mcp.
librejustice/librejustice French and European case law (Conseil d'État, Cour de cassation, courts of appeal, first-instance courts, Conseil constitutionnel, CNDA, ECHR, CJEU), linked article by article to consolidated legal texts as they stood on any date: codes, statutes, the Journal officiel, EU law and treaties. ~3.8M decisions and ~3.7M articles in one database, refreshed daily, hybrid lexical and semantic search. Hosted endpoint at https://librejustice.fr/mcp (OAuth), or run python3 mcp/ljmcp.py with an API key, standard library only.
ant-dev-lab/nightmarquee-mcp Art-directed website prompts as slash commands: hero sections, landing pages, SaaS, portfolio, e-commerce and 3D/WebGL scenes. Every build is registered as a real MCP prompt, so it lands in the command palette instead of waiting for the model to think of it, and is written natively for the tool you are in (Lovable, Bolt, Cursor or Claude). Each one has a live demo you can scroll before spending a token. Free prompts need no account; sign in from the session to unlock the rest. Install via NPM: npx -y nightmarquee
predictionmarketspicks/mcp Quant tools + an NFL fantasy draft assistant for AI agents — Kalshi & Polymarket EV, edge, ADP. 22 tools: expected value, Kelly sizing, Bayesian updating, odds conversion, base-rate gaps and a same-game combo builder, plus a full fantasy draft board (ADP, best-available, player outlook, sleepers) — all free, no key. Pro adds cross-platform gap scanning, macro pulse, commodity and NFL edge models, and live edge alerts. Remote Streamable HTTP at https://predictionmarketspicks.com/api/mcp/mcp — nothing to install.
anythink-cloud/anythink-cli # - Build and run a complete backend from your agent on the Anythink platform: relational data with row-/field-level security, full-text + semantic + geo search, RBAC + BYOK, a workflow/automation engine, a growth & retention engine (email, actionable push, promotions, per-user referral codes + rewards, points/credits), payments + marketplace billing, and a growing catalog of integrations (Claude, OpenAI, Slack, Google, GitHub…) — driven through one CLI-backed MCP tool. Install with npx -y @anythink-cloud/mcp.
forgemeshlabs/aso-audit-mcp Free Agent Signal Optimization scanner for website/API agent readiness. Scores discovery, identity, trust, commerce, reputation, and memory signals; validates robots.txt AI bot rules, llms.txt, agent.json, Google A2A agent cards, MCP server cards, API catalogs, OAuth metadata, x402, pricing, security.txt, status endpoints, and cross-file identity consistency. Returns ASO maturity levels, evidence, and prioritized fix plans. Local stdio or Glama-hosted, no API key required. npx -y @forgemeshlabs/aso-audit-mcp.
Val7h/dados-b3-mcp Auditable fundamentals for 400+ Brazilian stock market (B3) companies including banks and insurers: ROE, point-in-time P/E & P/B, dividends and dividend yield, Piotroski F-Score and Graham, and balance-sheet restatement history — plus Brazilian real-estate funds (FIIs) with point-in-time P/BV, dividend yield and vacancy. 100% public methodology, every number traceable to its CVM source; nothing published unless an invariant test suite passes. Free tier (200 req/day, no card). Remote: https://dadosb3.com/mcp/.
celineycn/quantdata-plugin Measured market statistics for US stocks/ETFs, futures, HK and A-shares: five-class day-type probabilities for the session in progress, Weis volume-wave events with pre-registered win rates, options max pain from open interest alone, and estimated dealer gamma (GEX). Every published number traces to a stated measurement — failures included — and nothing is a buy/sell recommendation. 10 calls/day with no key or signup. Remote at https://api.quantdata.uk/mcp; on the official registry as uk.quantdata/quantdata.
vishalbanwari26/mnemos Persistent memory with three swappable storage backends (Postgres/pgvector, Qdrant, Neo4j) behind one interface, benchmarked head-to-head for latency, not just claimed interchangeable. Retrieval weighting adapts per user via epsilon-greedy over real outcome feedback instead of a fixed formula. Reflection merges near-duplicate facts and decays/archives stale ones, audit-logged, never hard-deleted. Real before/after MCP eval: +60% answer accuracy with memory vs. without. git clone + uv sync (not yet on PyPI).
woladi/macos-vision-mcp Local OCR and image analysis via Apple Vision Framework. Wraps macOS's native Vision API to expose OCR for images and PDFs (with reading-order paragraphs, bounding boxes, line/paragraph IDs, and confidence), face / barcode / QR / document-corner detection, and image classification — all as MCP tools any client (Claude Code, Claude Desktop, Cursor, Codex CLI) can call. ~97% token savings vs sending raw images. Fully offline, no API keys, files never leave the Mac. One-line install: npx -y macos-vision-mcp.
sebastienrousseau/rlg Log-stream tools for on-call / SRE agent workflows — expose rlg (RustLogs) log files as MCP tools. Three tools: taillog (last N events, filtered by level/target), filterlog (JSON-path-style predicates), summarizeerrors (grouped error taxonomy). Speaks JSON-RPC 2.0 over stdio; near-lock-free structured logging engine underneath (65k-slot ring buffer, 14 output formats, oslog/journald sinks). Install cargo install rlg-mcp or docker run -i ghcr.io/sebastienrousseau/rlg-mcp. Dual-licensed MIT OR Apache-2.0.
MikhailHal/ariadne Affected-test selection for Kotlin/Android projects: returns only the unit tests impacted by the current working-tree changes, so agents skip full test runs while iterating. Function-level static analysis via Kotlin Analysis API — call graph over functions, properties (initializers, delegates, accessors), constructors and callable references — with automatic multi-module and Android variant source-set discovery. Verified on Now in Android (34 modules, ~4s per query). brew install mikhailhal/tap/ariadne
FROWNINGdev/django-orm-lens Django ORM static-analysis MCP server. Nine read-only tools (listapps, listmodels, describemodel, findrelations, cascadepreview, erdiagram, describemigrationdependency, suggestindexes, signalgraph) that expose Django schema, relationships (FK/M2M/O2O, ondelete, relatedname), migration deps, missing indexes, and signal graphs — no DB, no Django boot, no credentials. Companion to a VS Code / VSCodium / Cursor extension (Open VSX verified) and a django-orm-lens PyPI CLI. pip install django-orm-lens[mcp].
srbsa/diffgate Deterministic guardrail for AI-written diffs, runnable from inside the coding agent's own loop over MCP. Zero-LLM-token, AST-precise rules (SQLi, SSRF, XXE, permissive CORS, prototype pollution, hardcoded secrets) across 8 languages, plus structural checks for reinvented helpers and over-abstraction — findings scoped to only the changed lines, same input always gives the same output, no false-block guarantee. npm i -g diffgate-review (registers as the diffgate command; diffgate mcp starts the server)
getanyapi-com/mcp AnyAPI: hundreds of scraping and data APIs (social media, search results, Google Maps, e-commerce, general web data) behind one MCP server - one key, USD pay-per-request, no subscriptions, normalized JSON schemas, and automatic failover across upstream providers. Agents discover, inspect, price and run any of them with the same loop (searchapis, getapi, quoteapi, runapi); failed calls are never charged. Install: npx -y anyapi-mcp, or point a remote client straight at https://api.getanyapi.com/mcp.
doublegate/CyberChef-MCP GCHQ CyberChef's 504 data-transformation operations as MCP tools — encryption, encoding, compression and forensics — plus 19 analysis tools for work a single operation cannot express, such as hash identification, RSA and ECDSA attacks, XOR key-length recovery, cipher solving, X.509 chain validation and NIST post-quantum identification (ML-KEM/ML-DSA/SLH-DSA). Runs in-process with no separate service; tools/list is a navigable index by default rather than 544 schemas. npx cyberchef-mcp or Docker.
dmytrome/groundhog Web search, read and research over a real stealth-patched Chrome, driven by raw CDP so the Runtime domain is never enabled and the isAutomatedWithCDP tell is absent. Strips text that is invisible in the rendered DOM before the model reads it and reports each occurrence in threats, returns a SHA-256 provenance receipt per source, and re-checks the SSRF guard after redirects. research ranks passages across all sources in one pass — extracts, not summaries, so no model or API key is involved. MIT.
aurumflux20/seal Exactly-once execution for agents that move money: the same payment can't settle twice across processes or retries. World-confirmation asks the provider ("did this charge actually land?") and returns CONFIRMEDONE / MULTIPLE / ABSENT / UNKNOWN; out-of-band reconcile catches spend that bypassed the gateway; earned-autonomy licensing (L0–L5) only raises an agent's unattended spend ceiling on proven-clean history. In the official MCP Registry as io.github.aurumflux20/seal. pip install seal-kernel
krystiangw/meet-live-assist-extension Puts the agent you already run inside a live Google Meet or Zoom call. A Chrome extension reads the on-screen captions, a local server hands them over MCP, and the agent answers in a side panel while people are still talking, posts to the meeting chat, and reads screenshots of a shared screen. Transcripts and screenshots are files on your own disk; there is no hosted service and no account. Needs an MCP client attached - Claude Code is the tested one. Install with npx meet-live-assist-server.
LamboPoewert/mcp-server-madeonsol Real-time Solana memecoin intelligence — 51 tools across KOL wallet tracking (1,000+ wallets, sub-3s latency), Pump.fun deployer scoring (6,700+ scored), multi-KOL coordination signals, alpha-wallet intel (47k+ scored early buyers), first-touch scout signal (backtested ≥3 follow-on KOLs ~50% of the time vs 14% baseline), copy-trade rules, and the all-DEX trade firehose. Free tier 200 req/day; also supports x402 micropayments. Install: npx -y smithery mcp add madeonsol/solana-kol-intelligence.
donnywin85/arb-dex-mcp Live cross-DEX pool prices, liquidity and gross cross-venue spreads on 6 EVM chains (BSC, Polygon, Arbitrum, Base, Avalanche, Optimism), read from on-chain pool state at a stated block. 6 tools, including a measurement archive that answers whether a dislocation persisted or was one sample. Every spread carries its optimal trade size, so a wide gap against a shallow pool reads as the artefact it is. Works keyless against a free hourly snapshot; live sweeps use your own key. npx -y arb-dex-mcp
FalsifyLab/falsifylab-alpha-mcp 9 MCP tools surfacing FalsifyLab public-market research data: DeFi yield farms (emissions-stripped APY), Hyperliquid vault leaderboard, SEC Form 4 insider buy clusters, material 8-K filings, macro tape (SPX/VIX/UST/DXY/GOLD/BTC/ETH), US spot crypto ETF flows, airdrop yield-gap detection, Polymarket whale positions, and confluencetoday (cross-source signal alignment). Free tier requires no signup. Pro $19/mo for real-time + 100 results + 90d history. Install: pip install falsifylab-alpha-mcp.
Cifero74/mcp-apple-music Full Apple Music integration: search catalog, browse personal library, manage playlists, and get personalised recommendations.- codex-curator/studiomcphub - 32 creative AI tools (18 free) for autonomous agents: image generation (SD 3.5), ESRGAN upscaling, background removal, product mockups, CMYK conversion, print-ready PDF, SVG vectorization, invisible watermarking, AI metadata enrichment, provenance, Arweave storage, NFT minting, and 53K+ museum artworks. Pay per call via x402/Stripe/GCX.
Alepha188838884/context-firewall Local proxy that collapses N downstream MCP servers into 4 meta-tools with progressive tool discovery (measured: 122 tools → 4, ~28.6K tokens of definitions saved), compresses large tool outputs (HTML→Markdown, JSON structure summarization, base64 stripping — 60–95% measured on real pages/APIs) with full-output retrieval via readmore, and prints a per-session token-savings report. Security-relevant outputs are never silently compressed. Install: npx -y context-firewall --config config.json
ilien-dev/svipall Local-first web reading with a tier ladder that escalates from plain HTTP to a real browser when a page pushes back. Pages as clean Markdown, whole-site crawls, keyless search, repeated page structure induced into rows, and a REST API. Attempts supported captchas on your own machine with optional local ONNX models, and parks the rest in a human dashboard. Labels blocked and low-quality pages instead of handing back a challenge screen as content. No API keys, no paid solvers, no telemetry.
geowire/geowire Location intelligence gateway across 10 providers (OpenStreetMap, OSRM, Google, Yelp, Foursquare, US Census, Kakao, Naver, Baidu, your own CSV): place search, geocoding, directions + distance matrices, travel-time isochrones, and commercial-area analysis (category density, ratings, demographics). Multi-provider merge + dedup with per-field provenance, cost budgets, and a policy engine that enforces each provider’s caching/attribution terms. Works with zero API keys. npx -y @geowirehq/mcp
saiffmirza/kiyas Design-fidelity checks for AI agents: compare a Figma frame (or any design screenshot) against the rendered implementation and get structured discrepancies with CSS properties and severity. Resolves a natural-language component description to a URL + selector in your codebase, screenshots it with Playwright, and compares via vision AI using your existing Claude Code or Codex subscription — no API keys. 90% mutation recall, zero false positives on its golden eval set. npx -y kiyas-cli mcp
tokportal/tokportal-mcp Official TokPortal MCP server: managed social infrastructure — real TikTok, Instagram and YouTube accounts created, warmed and operated by human account managers in 16+ countries, plus video upload/scheduling at scale, analytics, ban lifecycle and webhooks (91 tools with readOnlyHint/destructiveHint annotations). No per-account OAuth, no 25-posts/day cap. Remote (OAuth 2.1) at app.tokportal.com/api/ext/mcp or npx -y tokportal-mcp. Listed on the official MCP Registry as com.tokportal/mcp.
vince-gonzalez/opticquiz-mcp Color-vision accessibility. Check whether a palette or an image is colorblind-safe and name the conflicting pairs, generate colorblind-safe palettes (Okabe-Ito seeded), recolor an image as protanopia/deuteranopia/tritanopia renders it, and generate Ishihara-style test plates. Built on Machado, Oliveira & Fernandes (2009) + CIEDE2000, published open access at doi.org/10.5281/zenodo.21310578. Runs locally over stdio, no network calls. Install: npx -y cvdsafe-mcp and npx -y colorblind-mcp.
malonestar/gov-data-mcp 120 US government open-data sources (EPA contamination and drinking water, FEMA flood and risk index, USGS, NOAA, FAA airspace, USACE levees and dams, FDIC, HUD, NRCS soils, county assessor rolls, state licensing boards) as agent-callable tools. Runs locally over stdio with npx gov-data-mcp; 12 dedicated tools plus search-gov-data-tools / describe-gov-data-tool / run-gov-data-tool to reach the rest. Every tool reports its own per-result price, so an agent can weigh cost before calling.
true-alter/cli Companies pay other companies to find out who you are. ~Alter pays you because you choose to be found. Claim ~yourname, take back control of your digital identity, and keep 75% every time someone pays to find you. Golden threads turn curiosity into side quests that prove what you can actually do so you never write a CV again. Start or join a collective where a team, a union, or a whole country earns identity income the same way you do. Being known. npm i -g @truealter/cli && alter wire
vishnu-77/openreflex Local execution memory for AI coding agents (Claude Code, Codex CLI, Cursor, OpenCode). Lifecycle hooks record coarse task metadata into a SQLite Experience Graph (no code, commands, tool output or transcripts, and no model calls). Before a similar task it injects what worked, the relevant files and known fixes with an execution budget; during a task it recommends whether to continue, pivot or stop. MCP tools cover execution context, progress checks, outcomes, search and explanations.
haruodev/tamperlens-mcp Document forensics before an agent reads the file: whether a PDF, Office file or image was edited after it was written, whether its redactions actually removed the text, and whether it carries text addressed to a language model rather than to a reader — the recovered injection payload is elided rather than echoed back into the context. Thin client over the Tamperlens REST API; signals with evidence, never a verdict; nothing stored. 10 documents/hour with no key. npx -y tamperlens-mcp
tp322d/lastping-app Dead man's switch for AI agents, cron jobs and CI/CD pipelines. An agent creates its own monitor, asks for its ping commands and reports its runs in one conversation; LastPing alerts when a run goes silent, stalls, fails or loops, and listopenincidents hands back what broke with the recurrence count, failing step and exit code. 36 tools. Hosted at https://mcp.lastping.dev/mcp (via mcp-remote), or go install github.com/tp322d/lastping-app/cmd/lastping-mcp@latest. Free for individuals.
gerard-kanters/mcp-linux-tools Administer a Linux server from an MCP client such as Cursor or VS Code: read files and tail logs, check/reload/restart systemd services, manage cron jobs inside a dedicated crontab section, run read-only MySQL queries, drive WP-CLI on WordPress sites, run safe Git commands, and execute sandboxed Python. Directories, services and WordPress sites are allowlisted in config.json, and every tool returns a uniform {success, data, error, meta} response. Runs as a systemd service over HTTP.
pofky/asc-mcp App Store Connect control plane: 41 job-shaped tools that edit version metadata (with Apple's character limits validated), upload screenshots, build/sign/upload the binary, drive TestFlight, create IAPs and subscriptions with territory availability, run a release preflight audit, submit and release. Flags the steps Apple only allows on its website (privacy label, EU trader, first IAPs) instead of failing on them. Six tools need no license, three of those no Apple credentials either.
kyisaiah47/kynth-mcp Eleven keyless read-only lookups for questions a model cannot answer from a training cutoff, because the fact changed after it: what a given AI model costs today, whether a dependency is still maintained, what a SaaS stack costs per month, item-level search across public shadcn registries, published agent skills and configs, AI app-builder App Store readiness, ADA Title II accessibility reports for US .gov sites, and nonprofit good-standing. No API key, no signup. npx -y kynth-mcp
shakaran/symfony-agent-mcp Read-only introspection of a Symfony codebase: routes, controllers, services, entities, database schema, migrations, events, forms, security, Doctrine, Messenger, Twig and API Platform. 1,677 tools discovered progressively — tools/list starts at five meta-tools and the rest activate per category, so connecting costs ~828 tokens instead of ~154,000. Nothing is executed and nothing is written; results are scanned for credentials before they leave. npx -y @shakaran/symfony-agent-mcp
vikasny30/aletheia-mcp Deterministic (no-LLM) pre-execution filter for agent tool calls. Pattern-matches known scope-creep (out-of-mandate writes, credential-file reads, SSRF, destructive shell/SQL) and prompt-injection vectors and blocks them in ~25 µs. Runs as standalone guard tools or a fail-closed transparent proxy in front of any downstream MCP server. Signatures from the Aletheia research paper; a first-line pre-filter, not a sandbox. Registry io.github.vikasny30/aletheia-mcp. npx -y aletheia-mcp
drjerryrelth/ghl-command-feedback GoHighLevel (GHL) MCP server. 212 tools across 43 modules including the only programmatic GHL workflow builder (private API, reverse-engineered), funnel + page editor, form builder, pipeline builder, goal event builder, pre-deploy validator, multi-sub-account switching, bulk operations, and full account export. Built for agency operators managing many client GHL sub-accounts. Paid, $97 one-time, 30-day refund. Install: npx -y @elitedcs/ghl-mcp. Buy: elitedcs.com/ghl-mcp-server.
oomkapwn/enquire-mcp Long-term memory for AI agents (Claude Code/Desktop, Cursor, ChatGPT, Codex, OpenClaw) backed by a local Obsidian markdown vault. Hybrid retrieval (BM25 + ML embeddings + BGE reranker, RRF-fused), HNSW + int8 quantization, agentic RAG (HyDE + sub-question), GraphRAG-light (Louvain wikilink community detection), standalone Obsidian Bases, PDFs + Tesseract OCR. 46 tools, 19 MCP prompts, MIT, SLSA L2, zero cloud calls during serve. npx -y @oomkapwn/enquire-mcp serve --vault <path>
ni-c/google-search-console-mcp Google Search Console across three APIs, so it can create a property and prove ownership instead of only reading one somebody else set up — setupsite reports which of the four verification steps is missing and hands over the DNS record to paste. Plus sitemaps, URL inspection and the full Performance report with impression-weighted position. 21 tools, narrowable to a curated five; irreversible calls need a server-issued confirmation token. npx -y @ni-c/google-search-console-mcp
trakshan-mishra/Diffcontext Static-analysis-powered context compiler for LLM coding agents. Parses Python repos into dependency graphs, selects the minimal code context for a change (callers, callees, related functions), and packs it into a token budget with a disclosure header. Optionally biases retrieval from the bug report text. Includes verify which mines your repo's git history and grades retrieval — printing NULL RESULT when it doesn't fit. Zero runtime dependencies. pip install "diffcontext[mcp]".
uptybots/mcp-server Uptime monitoring for websites, APIs, SSL certificates, domain expiry, ping and TCP/UDP ports. 15 tools to list, create, pause and delete monitors, pull incident timelines with error codes and checker locations, and read hourly or daily uptime and response-time series. Checks run from probes in several countries. Remote server at https://mcp.uptybots.com/mcp needs no API key - it speaks OAuth 2.1 and the client registers itself; the stdio package is npx -y uptybots-mcp-server.
gridcarbon/clients Grid carbon intensity (gCO2eq/kWh) for 45 electricity zones: 33 European bidding zones (ENTSO-E), 11 US balancing authorities (EIA-930), and Great Britain (NESO). Tools: getcarbonintensity, getintensityhistory, listzones, comparezones. Every response carries the interval timestamp and how stale the reading is, so an agent can tell a current value from an hours-old one. Pre-alpha; history currently reaches back about three months. No API key or account — npx -y gridcarbon-mcp.
wedo911/citeguard Check a citation against Crossref for retraction, correction, or expression-of-concern status before it goes into a paper, summary, or review — catches papers like Wakefield's retracted MMR-autism study, still cited 1,000+ times since its 2010 retraction. No API key required. Detection logic (checked against real Crossref data, not just documentation) is shared identically between a Python CLI/library, this MCP server, and a GitHub Action for CI. npx -y citeguard-mcp-server
RipperMercs/tensorfeed Real-time AI industry intelligence MCP server. 6 free tools (AI news, service status, model pricing, today summary, agent activity, MCP registry snapshot) and 13 paid premium tools (routing recommendations, news search, history series, cost projection, provider deep-dive, model comparison, agents directory, what's new brief, MCP registry series, webhook watches with daily/weekly digest tier). Pay-per-call in USDC on Base mainnet, no accounts. npx -y @tensorfeed/mcp-server
alexfleetcommander/agent-trust-stack-mcp Cryptographic provenance, bilateral blind reputation scoring, and tamper-evident logging for AI agent interactions. 7 interlocking trust protocols (CoC, ARP, ASA, AJP, ALP, AMP, CWEP) available in Python (pip) and TypeScript (npm). 663 tests. Bitcoin-anchored provenance chains, anti-Goodhart reputation scoring, machine-readable contracts, dispute resolution, lifecycle management, trust-weighted matchmaking, and context-window cost allocation. Also on Smithery and PyPI.
Komdosh/komnet Git-backed message bus letting coding agents on different machines coordinate: rooms are folders, messages are files, git history is the log, and there is no server — the transport is a private git repository you already own. Questions, answers, decisions, collaborative tasks with claiming and recovery, and delegated repository reviews prepared in isolated worktrees at pinned revisions. Items marked needs: human cannot be answered by an agent, only relayed to a person.
ma2no4413/outlook-mcp Restructure a large Outlook / Hotmail mailbox. movefolder relocates a whole folder subtree in one API call — thousands of messages change place without being moved, their IDs stay valid, and inbox rules pointing at that folder keep working. Also bulk move and bulk mark-read with dry-run previews, and server-side inbox rules as first-class tools. Replies are written to Drafts; there is no send tool and Mail.Send is never requested. Deletes only ever reach Deleted Items.
haljishi/vidwords-mcp Let an agent read a YouTube video and cite the exact second. Search one video's transcript for a topic and get back only the matching moments with clickable ?t= deep links, or analyze the frames — slides, charts, demos and on-screen text that is never spoken aloud. Every citation is checked against a recorded frame or a real transcript segment and dropped if it fails. Hosted Streamable HTTP at https://vidwords.com/mcp, token header or OAuth, free tier at vidwords.com.
manganate006/openlmnp Open source (AGPLv3) accounting software for the French LMNP tax status (furnished rentals, e.g. Airbnb hosts). Computes component-based depreciation, generates French tax forms (2031/2033) and FEC accounting export, imports Airbnb/Booking.com booking data, and includes a micro-BIC vs. real-regime simulator. Built-in MCP server lets an AI assistant create accounting entries, compute depreciation, and generate tax returns via natural language. Self-hostable via Docker.
thehealthai/clarity-mcp Condition-aware ingredient, product & supplement safety for agents, with provenance on every answer — a verdict, an evidence tier (Gold/Silver/Bronze), and a verifiable citation — across breastfeeding, pregnancy, histamine/MCAS, rosacea, HS, allergy and fertility lenses. 9 tools incl. validateclaim (fact-check a claim against curated cited sources) and checkrecall (FDA/consumer recall lookup by brand with Class I flagging and source URLs). Hosted at mcp.healthai.com.
TT-Wang/cortex-plugin Persistent, self-evolving memory plugin for Claude Code. Background miner extracts durable lessons (decisions, conventions, bug fixes) from completed sessions via Claude Haiku, stores them as human-readable markdown in an Obsidian vault, and assembles query-tailored context briefings at session start. Local-first, no cloud, no API keys. Self-healing install via uv bootstrap shim, /cortex-doctor preflight, graceful FTS-only degraded mode when claude CLI missing. MIT.
Capital-W-Holdings/us-property-parcel-real-estate-debt US commercial and federal-programme real estate debt: loan maturities across 52 state codes, HUD subsidy contract expiries and LIHTC compliance period endings nationally, plus 291,914 Massachusetts and New York parcels with ownership and assessed value, and 95,494 recorded sale instruments. Hosted remote MCP over Streamable HTTP, no key and no signup; 11 of 12 tools free and permanent, one $1.00 loan-tape tool that quotes its price and coverage before it charges.
dbhq-uk/heliograph Run commands on a machine you cannot SSH into. Publishes a step to a transport the far side already reaches (git, file share, S3-compatible storage, relay or a carried file); the whole run comes back as a log with every line timestamped in UTC, whether it passed or failed. For air-gapped, bastion-only and change-controlled estates: no tunnel, no proxy, nothing held open. The gates live on the far side, so a tool call can ask but cannot authorise. heliograph mcp.
Brand-System/brandsystem-mcp Make your brand machine-readable. Extract brand identity (colors, fonts, logo, voice, visual rules) from any website via static CSS + rendered-page extraction, compile into DTCG tokens, brand runtime contracts, and interaction policies. 34 tools across 4 progressive sessions. Subscribable brand://runtime and brand://policy MCP resources. Content compliance scoring (0-100), pass/fail gate, and HTML/CSS preflight. Brandcode Studio connector for hosted brand sync.

Listing the full set on one page would produce an unusable document, so it is cut here. Every topic above lists its own entries, and the whole catalogue stays searchable and filterable in the interactive index.

What an MCP server is

The Model Context Protocol is an open standard that lets an AI application call external tools and read external data through a uniform interface. An MCP server is the process that exposes those tools — a database connector, a browser driver, a search backend, a filesystem bridge. Clients such as Claude, Claude Code, Cursor and VS Code each ship their own way of registering servers, but they all speak the same protocol.

How this list is built

Records are collected from the official MCP registry and curated public directories, then deduplicated on the repository or registry identity. Category assignment is normalised — the raw sources ship 69 overlapping categories including duplicates and free-form buckets, which are consolidated into the 24 topics above. Details are on the methodology page.