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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.

Compiles AI-written OpenSCAD code or dimension parameters into editable SCAD and STL models, renders previews from four angles and can export 3MF. Good for parametric parts and 3D printing. Needs OpenSCAD and Python 3.11+ locally; clone the repo and run with uv. No API key.

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.

KiCad assistant maintained by hardware maker Seeed Studio: analyzes schematics and PCBs, traces connections pin by pin, runs ERC/DRC headlessly, generates device trees and hardware test code, and downloads footprints. Needs KiCad 8+ (9 or 10 recommended) and Python.

Lets AI do parametric cloud CAD through the Onshape REST API: sketches, extrudes and revolves, assembly mates, interference checks, variable tables, and STEP/STL export. Needs an Onshape account with API access and secret keys; clone the repo and install with Python 3.10+.

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.

Connects AI to Autodesk Fusion 360 with 90+ tools for sketches, extrude, revolve and loft, chamfers and shells, booleans, sheet metal and patterns, to automate part modeling. Needs Fusion 360 with the repo's add-in copied into its AddIns folder and started, plus uv. Beta.

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 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.

Sonar's official plugin bringing SonarQube checks into the agent coding loop: secrets-scanning hook, issue fixing, quality gates, coverage and dependency risk; with Vortex analysis on, every edit is checked. Needs SonarQube (free Community Build works), the sonar CLI and Docker.

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.

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.

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.

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+.

Pinecone's official plugin: bundles the Pinecone MCP server and /pinecone skill commands to create vector indexes, upsert data, search in plain language, or build a document Q&A assistant with citations from Claude Code. Needs a Pinecone API key (free sign-up); Assistant features also need uv.

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.

HashiCorp's official MCP: lets agents manage Vault mounts, read and write KV secrets, enable PKI, create issuers and roles, and issue certificates. Needs a reachable Vault server and token; HashiCorp recommends using it only in trusted local environments.

CoinGecko's official MCP: query prices, market caps, exchanges and price history for 10,000+ crypto assets, plus on-chain DEX data. Connect to the free keyless public server (shared rate limits) or use a Pro API key for higher limits and the full toolset. For research only, not investment advice.

Trivy's MCP plugin: lets agents scan local projects, container images and remote repositories for vulnerabilities and misconfigurations in plain language, optionally checking policy compliance via the Aqua platform. Requires Trivy; maintained by Aqua Security.

Helps agents add Auth0 authentication to apps: detects 35+ frameworks and covers login, MFA, SSO, RBAC, JWT validation, migration from other auth providers, and tenant security audits. Maintained by Auth0; needs an Auth0 account (free sign-up).