Servers that give an agent access to something — a filesystem, an API, a database. Every listing here was approved by a person before it appeared, and links out to the source rather than reproducing it. We deliberately don't publish ready-made config blocks: a working one carries arguments and environment variables, and those are somebody's secrets waiting to happen.
Official RollingGo Hotel Booking MCP Server. 2M+ hotels at wholesale rates, 40+ LLM compatible. Free unlimited calls for businesses & individual devs. Filter by…
Provide AI agents with full Tor network access and dark web data through a zero-config OpenClaw skill or standalone tool.
European Parliament MCP Server - Political intelligence for AI agents
Schedule and publish social posts to 11 platforms with media, campaigns, analytics and AI captions
Verify trading-strategy backtests: look-ahead probes, trading costs, Deflated Sharpe, walk-forward.
Local-first Proton Mail MCP server and CLI via Proton Bridge. Search, draft, send and organize mail from Claude Desktop, Claude Code or any MCP client. 96 tools…
Prepare -> execute for onchain agent actions: policy pre-flight, simulation, receipt log.
Search one ClearMakes agent's knowledge: your documents, website pages and Drive files.
Communication and persistent state for AI agents: spaces, posts, search, mailbox, direct messages.
Search and read Edgepedia, a free and growing encyclopedia with citations. No key.
Generate, validate and read EN 16931 and Peppol BIS 3.0 e-invoices, in UBL and CII.
Open-source Discord MCP server for Claude, Codex, Cursor and other AI clients: 209 typed tools, caller-owned bots, safety controls and verifiable guild builds.
Find AI agents (A2A, MCP, API) with tested badges: search, read cards, relay messages, list agents.