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PostHog's official hosted MCP: lets agents query product analytics with HogQL, manage feature flags and A/B experiments, and investigate errors and session replays. Sign in to PostHog to authorize; tool calls are free, though a few LLM-powered tools count toward AI usage.

From Microsoft: converts PDF, Word, Excel, PowerPoint, HTML and other files or URLs to Markdown so agents can read and search them. A single convert_to_markdown tool over STDIO or local HTTP.

Injects up-to-date, version-specific docs and code examples for libraries and frameworks into the agent's context, so it stops using outdated or invented APIs. By Upstash; works anonymously, and a free API key raises the limits.

Parses a PRD into a dependency-aware task list so Cursor, Claude Code and other coding agents break it down, implement it and track progress; also works as a CLI. Needs at least one model API key, or reuse a Claude Code or Codex CLI login.

Connects Google Search Console so agents can analyze queries, clicks and rankings, compare periods, check URL indexing status and manage sitemaps. Not an official Google project; you need your own Google Cloud OAuth credentials or a service account.

Converts PDF, Word, PowerPoint, Excel, EPUB, web pages and images to clean Markdown locally, keeping page anchors, tables and two-column reading order, with full-text search across folders. Formerly pdf-reader-mcp; no uploads, no API key. Needs Node.js 18+; OCR for scans needs tesseract.

Connects to your local or cloud Zotero library: search by title, full text or semantics, read PDFs and annotations, add items by DOI and organize collections. Needs Python 3.10+; for local mode, enable the local API in Zotero settings first.

Cloudflare's official remote MCP servers: manage Workers and bindings such as KV, R2 and D1, and query logs and observability, builds, DNS analytics and Radar data. Authorizes with Cloudflare OAuth; some features need a paid plan.

Lets agents call the Stripe API to manage customers, payments, subscriptions, invoices and refunds, and search Stripe docs and support articles. Maintained by Stripe; the remote server uses OAuth, or run it locally via npx with a secret key.

Posit's official R package connecting R to Claude Code and other agents: register your own R functions as tools and run them in your open R session, using its data. Out of the box it only switches sessions; add the btw package for docs lookup and data inspection tools. Requires R.

Writes an agent's edits to Word contracts as native tracked changes and comments while keeping the original formatting; can also compare two versions and strip author metadata before sending. Built for contract redlining. Runs locally with Node.js, no account; a lawyer must review all changes.

Learning Commons' official remote MCP for its K-12 education knowledge graph: look up US state standards by code, break them into teachable skills, and trace math learning progressions to align lessons and quizzes. Needs a Learning Commons API key; mostly US standards, early access.

Lets agents control and inspect a real Chrome: read the console and network requests, take screenshots, and record performance traces with optimization suggestions. Maintained by the Chrome DevTools team.

Writes conversations and business data into Graphiti's temporal knowledge graph so agents can retrieve long-term memory by entity, fact and time. Open source from Zep; start FalkorDB or Neo4j and the server with Docker first, and configure an LLM API key.

Google's open-source database MCP server with ready-made query and SQL tools for dozens of sources, including PostgreSQL, MySQL, BigQuery, Spanner and MongoDB. Define controlled custom queries in tools.yaml.

Scrapes web pages into Markdown or structured data, with full-site crawling, sitemaps, web search and interaction with dynamic pages. Maintained by Firecrawl; the cloud needs an API key (self-hosting is possible), and the keyless hosted endpoint only offers scrape, search and parse.

Create, read and modify xlsx workbooks without Microsoft Excel installed: formulas, formatting and conditional formatting, charts, pivot tables and tables. Runs locally over stdio or as a remote HTTP service.

Query Google Analytics 4 in natural language: read account and property info and run standard, funnel and realtime reports. Official from Google Analytics (experimental); requires Google Cloud Application Default Credentials.

Figma's official remote MCP: hands components, variables and layout from your designs to the agent to generate code, and can create and edit designs on the canvas. Needs Figma sign-in; Starter plans and View or Collab seats get only 6 read calls a month.

Connects agents to live Jupyter notebooks: read, write, insert and execute cells and read multimodal outputs like charts, for interactive data analysis. Bring your own JupyterLab or JupyterHub; open source, maintained by Datalayer.

YouTube channel assistant: lets agents upload videos, edit titles, descriptions and thumbnails, and manage playlists, captions, comments and live streams; also works as a CLI. Requires enabling the YouTube Data API in Google Cloud and creating OAuth credentials; daily API quotas apply.

Chroma's official MCP: lets agents create and manage collections, add documents, and retrieve them with vector search, full-text search and metadata filters. Connects to in-memory or local persistent stores, self-hosted instances or Chroma Cloud.

Connects Stata to VS Code or Cursor and exposes a local MCP endpoint so Claude Code or Codex can write and run do-files and read regression output, with graphs shown in the editor; for empirical research. Needs a licensed Stata 17+, the extension installed and the editor open.

Octagon AI's official research MCP: ask in plain language about SEC filings, earnings calls, financial metrics, stock and crypto prices and news; also prediction-market reports and a deep research agent. Needs a free API key and Node.js. Not investment advice; verify findings.

Connects to the St. Louis Fed's FRED database: search and pull 800,000+ macroeconomic time series (GDP, unemployment, inflation, interest rates) with built-in year-over-year and period-over-period changes. For macro research, investing and teaching. Needs a free FRED API key and Node.js.

UK legal research service from i.AI, the UK government's AI incubator, with a remote MCP: semantic search over UK legislation, amendments and explanatory notes. Connect directly, no account. Officially experimental; case law is temporarily disabled and results need a lawyer's review.

Gives agents long-term memory across sessions with a local knowledge graph of entities, relations and observations, stored in a local JSONL file you can query and edit. Official MCP reference implementation.

Official OpenBB MCP server exposing the OpenBB Platform's equity, ETF, macroeconomic, crypto and news data to agents; enable only the tool categories you need to save context. Needs uv locally; some data sources need your own API keys. Not investment advice.

Lets agents drive a real browser through the accessibility tree: navigate, click, fill forms and take screenshots, without needing a vision model. Maintained by Microsoft.

MCP built into the open-source social media scheduler Postiz: agents draft, schedule and publish posts and view analytics across 30+ platforms including X, LinkedIn, Instagram and YouTube. The cloud version uses browser OAuth, no API key (paid after a 7-day trial); self-hosting is free.

Open-source SEO tool (a Semrush/Ahrefs alternative) with built-in MCP for keyword research, rank tracking, competitor and backlink analysis, site audits and AI search visibility checks. The hosted version has a free trial; self-hosting needs a pay-as-you-go DataForSEO key.

Lets agents call thousands of ready-made scrapers and automation Actors from Apify Store to pull data from social media, search engines, maps, e-commerce sites and more. Maintained by Apify; needs an Apify account (OAuth) or API token.

Unified search across 20+ academic sources including arXiv, PubMed, bioRxiv, Semantic Scholar and OpenAlex, returning deduplicated, normalized results and downloading full text via open-access channels first. Most sources need no API key.

Python library with a built-in MCP server for US SEC EDGAR data: search 10-K, 10-Q, 8-K and other filings and read XBRL-standardized financial statements, Form 4 insider trades and 13F holdings. Free with no API key; just set an EDGAR_IDENTITY.

Microsoft's official Microsoft 365 MCP: query your email, meetings, OneDrive and SharePoint files, Teams messages and colleagues in plain language, e.g. tomorrow's meetings or someone's budget emails. Needs a Microsoft 365 Copilot license, tenant admin consent and Node.js 18+; public preview.

Lets agents read and write QuickBooks Online customers, invoices, bills, journal entries and more, and generate balance sheets, P&L and cash flow reports. Official from Intuit; register a developer app for OAuth, then build from source and run locally.

MCP for the Canvas LMS: teachers can have agents bulk-grade, manage assignments and modules, post announcements and nudge students with missing work; students can check deadlines and grades. Needs a Canvas API token; one-click extension for Claude Desktop, Python 3.11+ elsewhere.

Lets agents read DataForSEO API docs and make authenticated requests for keyword, SERP, backlink and site audit SEO data. Maintained by DataForSEO; pay-as-you-go API, account required.

Drafts US-law contracts: the agent gathers terms for standard templates (NDA, SAFE, offer letter, cloud services agreement) and outputs a DOCX to review in Word, plus guides and checklists citing source law. Use the hosted URL, or run locally for sensitive matters. Drafts only; a lawyer must review.

Official hosted MCP from the nonprofit Free Law Project: search US federal and state court opinions, dockets and judges, extract and verify case citations in documents, and subscribe to case alerts. Needs a free CourtListener account (browser sign-in); a lawyer should review results.

Local MCP server built into Browser Use: lets agents navigate, click, type and extract page content, or hand multi-step tasks to the built-in browser agent. Bring your own OpenAI or Anthropic API key.

Open-source local design workbench and Claude Design alternative: builds web and mobile prototypes, slides, images and motion videos from a DESIGN.md system, exporting HTML, PDF, PPTX or MP4. MCP lets Claude Code and Codex use it. Needs the macOS or Windows app; Linux from source.

Simplifies Figma designs into layout and style data for coding agents, so UIs built from the design are more accurate than working from screenshots. Requires a Figma personal access token.

Search and download arXiv papers and read the authors' LaTeX source section by section, export BibTeX and follow topic updates, with papers cached locally. No API key needed.

Open-source local video editor with a multi-track timeline. Claude Code or Codex can rough-cut by chat, cut flubs and pauses from the transcript, and add subtitles, transitions and music as drafts you approve. Needs the desktop app with a project open; AI features need your own API keys.

Works with Outlook mail and calendar, OneDrive, Excel, OneNote, To Do and more through Microsoft Graph, plus Teams and SharePoint in organization mode. Community-maintained, with a read-only mode.

Drives desktop Excel on Windows: refresh Power Query, build pivot tables and charts, evaluate DAX and run VBA while keeping existing formulas and formatting, so finance and admin staff can automate existing reports. Needs Windows, Excel 2016+ and Node.js; no macOS.

Searches about 30 biomedical sources, including PubMed, ClinicalTrials.gov, ClinVar and OncoKB, with one command syntax, covering literature, clinical trials, genetic variants, drugs and pathways. Ships as both a CLI and an MCP server.

Lets agents read and write Xero accounting data: contacts, chart of accounts, invoices, payments, journals and reports such as profit and loss; payroll queries work only for NZ and UK organisations. Maintained by Xero; create a Custom Connection in the developer portal.

Official kFinance library and MCP server from Kensho (S&P Global): lets AI query S&P Capital IQ financials, prices and market caps, consensus estimates, M&A and funding, earnings call transcripts and more. Needs an S&P LLM-ready API subscription or trial; verify outputs.