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.
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12,787 results · page 327 of 427
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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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onvexiaMCP serverCommerce & finance
Crypto fundamental analysis, sentiment and whale tracking for traders and AI agents.
Ready to connect
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onvibeMCP serverDatabases & data
Talk to Claude and get a live web app deployed to a real URL, with Postgres, storage and cron.
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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ooniMCP serverWeb & browsing
OONI MCP — internet censorship & website reachability measurements from the
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opc-mcp-serverMCP serverCommerce & finance
OPC Suite — CRM, sales, inventory, accounting, HRM, payroll, claims, projects from any AI agent.
Ready to connect
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opchain-skillsMCP serverMedia
Claude Code / MCP skills for the dev pipeline: discover, spec, design, build, ship, operate.
Ready to connect
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open-agent-polityMCP serverAI & models
Open governance for AI agents: discover live debates, deliberate, vote, follow, and invite.
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 (BYO key)
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open-elevationMCP serverDev tools
Open-Elevation MCP — terrain elevation by lat/lon (no auth)
Ready to connect
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open-fecMCP serverCommerce & finance
OpenFEC MCP — Federal Election Commission campaign finance data
Ready to connect
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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-notify-mcpMCP serverDev tools
People currently in space from Open Notify. No key required.
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open-videoMCP serverMedia
AI-powered video publishing, channel management, and monetization via open.video
Ready to connect
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open5e-mcpMCP serverDev tools
Dungeons and Dragons monsters, spells, and classes. No key required.
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openagent-registryMCP serverWeb & browsing
Score any website's AI-agent readiness. Open Agent Registry scanner + platform tools.
Ready to connect
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openai_billing-mcpMCP serverAI & models
OpenAI organization usage and cost reporting through an admin API key connected by the user.
Ready to connect
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openaireMCP serverDatabases & data
OpenAIRE MCP — EU research outputs (publications, datasets, software, projects)
Ready to connect
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openalexMCP serverDev tools
OpenAlex MCP — wraps the OpenAlex API (scholarly works, free, no auth)
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openapi-scout-mcpMCP serverDev tools
Local read-only OpenAPI and Swagger inspection with secret-safe schema summaries. Tools include...
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openaqMCP serverDev tools
OpenAQ MCP — global air-quality measurements via the OpenAQ v3 API.
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openasoMCP serverAI & models
App Store Optimization for AI agents: keyword ranks, suggestions, popularity, competitors, reviews
Ready to connect
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openbeautyfactsMCP serverDev tools
Open Beauty Facts MCP — Open Beauty Facts API (free, no auth, keyless).
Ready to connect
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openbossMCP serverCommerce & finance
Public internet HP bar. Agents smack it over MCP. They cannot complete payment.
Ready to connect
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opencellidMCP serverDatabases & data
OpenCellID MCP — cell tower geolocation database (free with key)
Ready to connect
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openchargemapMCP serverDatabases & data
Open Charge Map MCP — global EV charging station database (openchargemap.io).
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.
8,878 of the 12,787 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.