Best Actions AI Skills & MCP Servers

Lightweight, embeddable skill/tool registration framework for AI agents

Mercury Banking MCP server with full Invoicing API support — accounts, transactions, recipients, customers, invoices (one-shot + recurring), webhooks.

MCP server for SEC EDGAR — search filings, extract sections, financials, insider transactions. No API key required.

MCP-backed SqlDriver — talks to any MCP server exposing a SQL query tool. Reduced capabilities (no transactions, no per-session role context) but works against any MCP-protocol DB server.

MCP server for Super Investor — query superinvestor 13F portfolios, insider transactions, and stock holdings from SEC EDGAR

MCP server for read-only Shipcheck launch-risk scans on authorized JavaScript and TypeScript repos.

Security scanner for AI-generated apps (Cursor, Lovable, Windsurf, v0). Catches hardcoded secrets, prompt injection, hallucinated imports, Server Actions / Edge runtime mistakes, and the vibe-coded vulnerabilities traditional linters miss.

A Model Context Protocol (MCP) server implementation for CircleCI, enabling natural language interactions with CircleCI functionality through MCP-enabled clients

GitHub Action for evaluating MCP server tool calls using LLM-based scoring

Framework-agnostic SDK for Routstr API interactions

A MySQL MCP Server for LLM database interactions via Model Context Protocol

Turn conversations into project plans. Gantta connects your AI assistant to a full project management backend — plan projects, manage tasks, chase actions, and generate reports, all through natural language. ### What you can do - **Create project plans** — Describe your project

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required - just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on

Operate and audit your Circle.so community from Claude with tools for spaces, posts, members, comments, health snapshots, and controlled content actions.