Tools

Official Alpha Vantage MCP: exposes its API as tools for stock and options quotes, fundamentals, news sentiment, forex, crypto, commodities, economic indicators and dozens of technical indicators. Needs a free API key; a remote OAuth server is also available.

Comet's official Opik MCP: query traces and spans of LLM apps in chat, log scores and comments, and manage datasets, experiments and prompt versions. Works with Opik Cloud (API key or browser sign-in) and self-hosted open-source Opik.

Official Firecrawl skill that scrapes competitors' pricing, feature and changelog pages, extracts plan prices, feature lists and recent changes, and produces a sourced competitive-intel report with change alerts, easy to rerun on a schedule. Needs a Firecrawl API key and its CLI or MCP.

16 official Firecrawl skills that turn web scraping into deliverables: competitor pricing and feature tracking, market and industry reports, pre-meeting account research, lead lists, SEO audits and literature reviews. Needs a Firecrawl API key plus its CLI or MCP.

Pulls Yahoo Finance data for free via yfinance: company profiles, financials, analyst estimates, news, option chains, fund holdings and sector rankings, plus candlestick charts. No API key, just uv. Data may be delayed; have investment conclusions reviewed by a professional.

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.

Wraps Shapely, GeoPandas, PyProj, Rasterio, PySAL and other GIS libraries so agents can run geometry and overlay analysis, reproject coordinates, process rasters (e.g. NDVI), do spatial statistics and make maps, and fetch boundaries, land cover and satellite imagery. Needs Python 3.10+ and uv.

MongoDB's official plugin: runs the MongoDB MCP locally via npx and adds skills for query generation, index tuning, schema design, and full-text and vector search. Connects to self-hosted or Atlas databases with a connection string.

MongoDB's official skill library covering document model design, driver connection setup, query optimization, natural-language query generation, Atlas full-text and vector search, and stream processing. Works alongside the MongoDB MCP Server.

Miro's official plugin with the Miro remote MCP and three skills: draw codebase explanations on a board, run visual code reviews on the board, and turn board docs, diagrams and prototypes into development specs. Needs OAuth with a Miro account.

Slack's official plugin: connects the Slack-hosted MCP to search messages and files, send or schedule messages, and read and write canvases. Includes commands for channel summaries and standup reports, plus skills for building Slack apps. Requires workspace admin approval.

Microsoft Translator's translation quality tool: GPT scores each sentence using MQM error categories or a direct score; --list_mqm_errors shows error types and severity. Needs line-aligned source and target files, Python and an OpenAI or Azure OpenAI key (paid); a translator should still review.

Gives agents 250+ Financial Modeling Prep endpoints: financials, valuation and technical indicators, insider and congressional trades, SEC filings and earnings calendars. Needs an FMP API key (free tier); connect to the author's hosted URL or run locally on Node.js 25.3+. Results need expert review.

Microsoft's official MCP: query Clarity traffic, behavior metrics and session recordings in plain language, filtered by device, browser, country and more, to dig into landing page conversion. Needs Clarity installed on your site, a data export API token and Node.js.

Connects any FHIR-compliant EHR server (e.g. the Epic sandbox or HAPI) to agents to search, read, create and update patient clinical data in plain language, with SMART on FHIR auth. By WSO2. Needs a FHIR server URL, access token and uv; clinicians must review results.

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.

Official Google Ads API assistant: ask in plain language, generate and validate GAQL queries, run them to export account data to CSV, and debug offline conversion uploads. Account-changing code is generated, not run. Needs a developer token, credentials file and Python 3.10+.

Wolfram's official agent tools: use the Wolfram Language and Wolfram|Alpha for symbolic and numeric math and scientific and statistical data, for teaching and research. The command runs the official Docker image with a free developer license; Wolfram 15+ users can install it in the app.

When the user describes a concept in their own words that matches an established term of art, the agent appends that single term after its answer, linked to a Google Images search, so the user learns the proper name and can see examples.

PostHog's official plugin with a built-in MCP and 30+ skills: query product analytics, feature flags, A/B experiments, dashboards and error tracking from chat, and optionally send Claude Code sessions to LLM Analytics. Needs OAuth sign-in with a PostHog account.

MLflow's official skills plugin: lets coding agents add MLflow Tracing to LLM apps, analyze failed traces, build evaluation datasets and scorers, and query token and latency metrics, closing the instrument, evaluate, iterate loop. Needs MLflow 3.8+.

Twelve Data's official MCP: real-time and historical prices for stocks, ETFs, forex and crypto, 60+ technical indicators, plus financials, dividends, fund holdings, company news and SEC filings. Hosted; sign in with your Twelve Data account in the browser, no API key to copy.

Official RevenueCat plugin: configure in-app purchase projects, products, entitlements and offerings from chat, view revenue, conversion funnels and experiment data, with SDK skills for iOS, Android, Flutter and more. Needs RevenueCat OAuth sign-in; SDK setup needs a developer.

42 official AWS skills for healthcare and life sciences: medical coding and terminology mapping, FHIR/HL7 parsing, claims and prior authorization rules, medical imaging, pharmacoepidemiology and genomics, per US standards. Some need local software. Not for clinical decisions; expert review required.