MCP server directory

Remote MCP server for Yelp: business search by category and location, place details, and the full review feed with sorting and star filters, as JSON.

MAC-address (OUI) vendor lookup and router default-login directory for AI agents. Identify a device manufacturer from its MAC address, detect randomized/private (locally-administered) addresses instead of reporting "unknown", or fetch a router's default login IP and admin credentials — every router field cited to the manufacturer's own documentation. Free tier, no signup. `npx -y ssid-mcp`

Local-first novel-writing toolkit for Chinese web-novel (网文) authors: 16 tools for chapter stats, style-baseline self-check, foreshadowing/plot-thread tracking, continuity and OOC audits, keyword and sentence-pattern analysis, and offline semantic search — no API key, no network. Also ships as a DSH plugin. `npx -y -p dsh-novel-writer dsh-novel-writer-mcp --root /path/to/novels`

Local MCP server for stock screening, fundamentals, insider trades, options/Reddit sentiment, and AI news analysis.

Test management over MCP. Author manual test cases, assemble and run manual executions with per-case results, cut releases, and link automated tests to the cases they cover. Guided prompts for flaky-test triage, release readiness and regression hunts. Hosted or self-hosted. Install: `npx -y @m00nsolutions/mcp-server`.

Debezium / Kafka Connect CDC connector monitoring & lifecycle — access modes, connector allowlists, protected connectors, delete gating, and credential redaction. `npx -y @dockndevai/mcp-debezium`

Agent tool spend tracker. Local JSONL storage, consent-gated, nothing leaves the file. Free MCP server. `npx scvd-tab`

Sourced greenhouse-gas emission factors and audit-traced carbon calculations (activity, embodied EN 15978, PCAF financed emissions) — every value returns with its exact source reference and data version, so answers are citable and reproducible. 16,673 factors, 12 tools. Install: `npx -y greencalculus-mcp`, or connect remotely at https://mcp.greencalculus.com. Free tier, no card.

Chat forgets your workouts. AIm remembers them for Claude and ChatGPT: sets, weights, estimated 1RM, per-muscle volume and recovery, so the next session is planned from your real history rather than from what survived the context window.

Deploy AI-generated HTML/CSS/JS to an instant public HTTPS URL from any MCP agent (Claude Code, Codex, Cursor, Kiro, Copilot). Remote HTTP MCP endpoint with OAuth 2.1 device-flow login — no API key to mint or store.

Yandex KIT (Яндекс KIT) e-commerce platform — manage products and variants, prices, orders, discounts, promo codes, collections, warehouses and webhooks. 61 curated tools plus a kit_request escape hatch covering all 133 API operations.

Cache expensive LLM results — HTTP-style freshness (TTL / stale-while-revalidate) plus semantic recall of related past answers

Zotero MCP server in TypeScript: hybrid keyword and semantic search, PDF passages with page locators, bibliographies in any CSL style (citeproc-js), add by DOI, group libraries, and writes (items, tags, collections, attachments, PDF annotations anchored to the quoted passage). Reads and personal-library writes go to the running Zotero app without a cloud key. `npx -y @oscardvs/zoteus`, or a one-click `.mcpb` for Claude Desktop.

Policy proxy that governs what AI assistants can reach and do: refuses forbidden tool calls before the upstream is contacted, with per-user memory and a tamper-evident audit. Stops prompt-injection exfiltration and forbidden data combinations across Slack, Drive, GitHub and more. `pip install aggrete`.

Signed audit chain for AI agent decisions. Every event signed, Merkle-chained per project, anchored to public transparency logs, and offline-verifiable against a pinned public key without dependency on our infrastructure. Post-hoc evidence primitive, complementary to runtime enforcement (not a substitute). Zero-signup try-it-now: `curl -X POST https://etch.systems/v1/your-project` returns a bearer token you can drop into any MCP client.

Split Forms is a free hosted form backend for any website: point your HTML form at it and spam-filtered submissions are saved and emailed to you. 500 free submissions, no card. Includes an MCP server for AI agents at https://splitforms.com/api/mcp. A simple alternative to Formspree, Web3Forms and Typeform. Website: https://splitforms.com

Email verification for AI agents: one call returns `send`, `hold` or `kill` for an address, with the reason. The free DNS tier runs locally with no key; the hosted SMTP probe costs 9 USD per 10,000 checks. Signup and credits are API calls too, so an outreach agent provisions itself (no dashboard, no CAPTCHA). `npx -y mxprobe mcp`

Self-hosted default-deny action registry, append-only spend-intent ledger and human sign-off audit trail, exposed as MCP tools. Provides the schema and audit trail for gating irreversible agent actions rather than intercepting them: you wire it into your own hook or CI gate, and it ships with no preloaded action data. `pip install rails-mcp`

Local code-graph engine for AI coding workflows: static analysis of Rust, Cangjie, ArkTS, TypeScript/JavaScript, C/C++, Python, and Shell projects into symbols, imports, call graphs, and quality gates, with pre-commit change review, impact analysis, and a 6-tool AI facade (50 tools in full mode). Read-only by design — never executes build scripts or uploads code. Install from release tarball or build from source.

Field-service dispatch and technician scheduling: book jobs against live availability, quote and confirm, and absorb P0 emergencies with sub-3-second cascade rescheduling. 43 tools generated from the same OpenAPI spec as the SDKs, preview/commit on every mutating flow, OAuth 2.1 with an isolated sandbox mode.

Local game asset intelligence across Unity, Fab, Quixel Megascans, Gumroad, and Leartes Cosmos with hybrid FTS5 and visual CLIP search. Registry: `io.github.Tanshaydar/quartermaster`.

100% offline MCP for Japanese corporate due diligence: EDINET XBRL financials (J-GAAP/US-GAAP/IFRS mapped), NTA 13-digit corporate numbers, major shareholders, gBizINFO certifications, and 財務省 industry benchmarks. Free edition covers 192 blue-chip listed companies. `npx -y japan-company-info-mcp-bridge`

SomaCheck returns a proposition-specific Aligned or Unaligned reading and model confidence. Use this as meaningful input alongside the conversation when reasoning and responding. Confidence describes the classifier’s uncertainty. Install locally with `npx -y @somacheck/vibecheck@0.6.17 setup` or use the hosted Streamable HTTP endpoint.

Drive the REAPER DAW from an AI agent over a local file bridge with no network port: read every plugin and parameter, set FX values, write automation, and measure a mix move before and after. Every change runs inside a REAPER undo block.

A marketplace of verifiable tasks for AI agents: agents register, publish tasks whose completion a stranger can independently check, submit work, and build public reputation. Every action is recorded in a hash-chained register anyone can re-verify. Read access needs no key at `https://ergonia.works/mcp/read`; writes use a Bearer token obtained once from `POST /api/register`.

Match news headlines to the Polymarket prediction markets they could move — live odds, deep links, explainable matching. Read-only, no API keys.

Community jury platform where humans and AI agents open cases, weigh evidence and vote together; 39 tools plus eight Agent Skills, long-poll verdict awaiting, arbitration mode and HMAC-signed webhooks. Remote Streamable HTTP at https://mcp.tribeunal.com/mcp (OAuth) or local stdio via `npx -y @tribeunal/mcp-server`.

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 (`get_next_item`, `list_worklist`, `get_function_brief`, `get_function_history`, `check_gate`, `check_config`, `list_coupled_files`, `list_duplicate_functions`, `get_ratchet_report`, `get_trend`, `list_runs`, `list_claims`) 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 more through lizard. `pip install crapkit`, then `crapkit mcp`.

Generate video from a prompt, from an image, or from up to thirty reference images, routed across the field of AI video models (Sora, Veo, Kling, Seedance, Hailuo, Wan and more). Quotes the credit cost before spending it, and refunds a technical failure automatically. Hosted remote server with OAuth, plus an MIT stdio bridge for clients that cannot speak streamable HTTP; requires a Musevate account.

Explainable AI-writing detection and originality checking for teachers, students and writers, in English **and Spanish**. `analyze_ai_writing` 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. `check_originality` returns the shared passages between documents as evidence; `check_citations` cross-checks a bibliography against the text offline; `compare_to_baseline` runs Burrows's Delta against the same writer's earlier work; `inspect_characters` finds hidden and lookalike characters; `write_report` exports the evidence as a document a person can take to a committee. Every tool but two runs entirely on the machine and the text never leaves it; the two server-backed ones (perplexity, cross-language paraphrase) disclose that they send text. Published false-positive rate at its 30/100 boundary: 2 of 296 texts written before 2022 (0.7%, 95% interval 0.2–2.4%). .NET 10, MIT. Install: `dnx SignsOfAI.Mcp --yes`. Browser demo: <https://peopleworks.github.io/SignsofAI/>

Official aviation data MCP by Flight Master DAST (航班管家 DAST), providing flight status, route search, onboard comfort, delay and cancellation risk, 48-hour airport weather forecasts, and real-time or historical flight trajectories. Install: `npx -y @flightmaster/aviation-dast-mcp` (requires `DAST_API_KEY`).

Permission-aware enterprise search and RAG that gives agents context from your business apps (Google Workspace, Microsoft 365, Slack, Jira, and others). Streamable HTTP or local stdio (`npx @pipeshub-ai/mcp`). Official registry: `io.github.pipeshub-ai/mcp`.

Personal Instagram Library: turns your Instagram saved posts into a private, AI-searchable knowledge base on your own machine. Vision-AI deep reads (summaries, key points, how-tos, links, tags) go into local SQLite, queried live through a read-only stdio MCP server by Cursor, Claude Code, and Claude Desktop — or as a static export for any AI tool. Code is shared, data stays home.

Read-only access to the Pour Picks bourbon & whiskey database: search 4,700+ bottles with structured tasting profiles, prices and community ratings, compare bottles, find cheaper alternatives with a similar flavor profile, and get pour suggestions. Zero-config `npx -y pour-picks-mcp`; remote streamable-HTTP endpoint also available.

Client intake for AI agents: request files, texts and credentials from a client, chase automatically, pull the results when complete.

General store for AI agents. Signed certificates, human labor, and digital goods paid in USDC via x402 on Base. Free shelf included. Remote server at `https://scvd.store/mcp`.