MCP servers.
Connect a server the community built.
An MCP server is a program somebody else built that gives your AI new tools: search a service, read a file, call an API.
Connect one here and Claude, Claude Code, ChatGPT, Codex and Cursor all reach it through a single endpoint, with your key held on the server side.
Category: Dev tools
4,781 results · page 113 of 160
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onthecheap-mcpMCP serverDev tools
On the Cheap MCP — free and cheap events, deals and local guides across 14 US cities
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onthisdayMCP serverDev tools
On This Day MCP — wraps byabbe.se/on-this-day (free, no auth)
Ready to connect
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oolkinMCP serverDev tools
AI colleagues that keep your standards, your project and their reasoning between sessions
Ready to connect
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open-contractingMCP serverDev tools
Open Contracting MCP — international public procurement: government tenders
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open-corporatesMCP serverDev tools
OpenCorporates MCP — Global company registry data (free, no auth, rate limited)
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open-elevationMCP serverDev tools
Open-Elevation MCP — terrain elevation by lat/lon (no auth)
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open-libraryMCP serverDev tools
Open Library MCP — Internet Archive's open book metadata
Ready to connectcaution
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open-sanctionsMCP serverDev tools
OpenSanctions MCP — Global sanctions and PEP data (free, no auth required)
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openalexMCP serverDev tools
OpenAlex MCP — wraps the OpenAlex API (scholarly works, free, no auth)
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openbeautyfactsMCP serverDev tools
Open Beauty Facts MCP — Open Beauty Facts API (free, no auth, keyless).
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opencagesMCP serverDev tools
OpenCage forward + reverse geocoding (free key, 2500/day)
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opencitationsMCP serverDev tools
OpenCitations COCI — open-license citation index by DOI
Ready to connect
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opencode-mcp-bridgeMCP serverDev tools
Coordinate and verify OpenCode workers over MCP Streamable HTTP.
Ready to connect
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opencrater-mcpMCP serverDev tools
Monetize your MCP server or CLI: live OpenCrater network stats + how maintainers earn USDC.
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opendata-swissMCP serverDev tools
opendata.swiss MCP — Switzerland's federal open-data portal (CKAN catalogue).
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opendosm-myMCP serverDev tools
data.gov.my / OpenDOSM (Department of Statistics Malaysia) — official Malaysian open-data API.
Ready to connect
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openfdaMCP serverDev tools
OpenFDA MCP — wraps the openFDA API (free, no auth required)
Ready to connect
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openfemaMCP serverDev tools
OpenFEMA MCP — US Federal Emergency Management Agency open data.
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openfoodtoxMCP serverDev tools
EFSA OpenFoodTox — the reference values EFSA has derived for chemical
Ready to connect
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opengist-mcpMCP serverDev tools
Read, create, update and delete gists on a self-hosted Opengist instance
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openibanMCP serverDev tools
OpenIBAN MCP — validate an IBAN's checksum + bank code and resolve the
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openligadbMCP serverDev tools
OpenLigaDB MCP — community-run, keyless football / soccer match data.
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openparliament-caMCP serverDev tools
OpenParliament.ca MCP — civic-tech mirror of the Parliament of Canada
Ready to connect
What is an MCP server?
The Model Context Protocol is the open standard AI clients use to call tools. An MCP server is a program that answers those calls: it publishes a few tools with their inputs, and the AI decides when to use them. Most are written by the people who needed them and published as open source, which is why this list is long and uneven.
8,579 of the 11,715 servers listed here can be served through ahel today. The rest stay listed so you can find them and read what they do, and their pages say plainly that ahel cannot serve them yet.
Connect one to Claude, Cursor, Codex or ChatGPT
Connecting a server here does not put anything on your machine. ahel runs it and serves its tools to every AI client you sign in with, so one connection covers Claude, Claude Code, ChatGPT, Codex, Cursor and VS Code with Copilot.
Your client's tool list stays the same size whatever you connect: a server's own tools are read with the tools verb and run with the use verb. Keys are sealed in ahel and injected server side, so a credential never crosses the link.