Model Context Protocol (MCP) Server Directory

Amazon Quick's Sep 2026 connector update brings per-tool gating, consent modes, and MCP sync. Build a governed connector fleet across five agent surfaces.

Patch MCP Ruby to 0.23.0: cap bodies, bound stdio, expire sessions, allowlist Hosts to stop 4 CVEs.

Deploy ToolHive to run 200+ MCP servers isolated with SSO, audit logs, registry curation, and 85% token savings via virtual gateway.

The "skills vs tools" question defines 2026 agent architecture. This guide builds a Skills Registry MCP Server that catalogs 1,700+ AI agent skills, maps them to equivalent MCP tool configurations, and enables agents to discover the right capability for any task — bridging the gap between agent-native skills and protocol-level tool calls.

MCPShark is a VS Code and Cursor extension that captures every MCP tool call — request, response, latency, payload — and renders it as an interactive timeline. This guide builds an MCPShark-powered monitoring server that exposes tool call telemetry as structured MCP resources for real-time agent debugging.

Atomic is a local-first, AI-augmented personal knowledge base that uses SQLite FTS5 and BM25 ranking for embedding-free semantic search. This guide builds an Atomic MCP Server that exposes note creation, semantic retrieval, and context merging as MCP tools — giving AI agents persistent, queryable memory with an 18MB memory footprint.

Build DearAgent Email MCP Server: self-hosted email inbox API for AI agents using Cloudflare Workers and FastMCP. Open-source alternative to AgentMail.

Build a Google SEO & GEO MCP server with Search Console, GA4, PageSpeed Insights, and structured data validation tools for AI agents. Full FastMCP tutorial.

Build a Remote MCP Servers Hub with FastMCP: curated directory, automated health checks, and MCP client integration for discovering 200+ remote AI agent tools.

BankMCP is an open-source self-hosted MCP server that gives AI agents read-only access to bank accounts via Open Banking APIs. With 199 GitHub stars, it solves the critical gap of standardized financial data access for AI agents without sharing credentials.

Build Geiger MCP Scanner -- a read-only MCP server that inventories every AI agent, MCP server, plugin, and AI extension on your machine. Full Python/ FastMCP tutorial.

PaperGraph MCP turns academic math papers into evidence-grounded reading maps for AI agents -- parsing LaTeX source into theorem dependency graphs.