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
4,686 results · page 151 of 157
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unicefMCP serverDev tools
UNICEF Data (UN Children's Fund) MCP — global statistics on child health,
Ready to connect
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univercity-mcpMCP serverDev tools
8-dimension business diagnosis with Revenue Leak Score and triple-option recommendations
Ready to connect
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universitiesMCP serverDev tools
Universities MCP — Hipolabs Universities API (free, no auth)
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unpaywallMCP serverDev tools
Unpaywall MCP — open-access lookup for scholarly papers (free, no key)
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unremind-meMCP serverDev tools
Context-aware reminders that surface when your situation matches, not at a fixed time.
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untap-mcpMCP serverDev tools
UK refunds inside your AI assistant: train delays, flights, TfL, parking. Made in London.
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upriverMCP serverDev tools
Know what's gaining traction online: breakout topics in tech, sports & politics, with citations.
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uproadMCP serverDev tools
Share prototypes as private links clients open without an account, attach specs, read comments.
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urantia-papersMCP serverDev tools
Free, open MCP server for The Urantia Papers. 197 papers, 14,500+ paragraphs, 4,400+ entities.
Ready to connect
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url-normalizeMCP serverDev tools
Return origin, host, and path. Query and fragment are dropped.
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us-auctionsMCP serverDev tools
Live US auction lots and sold prices from commercial auction houses and government surplus
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us-census-mcp-serverMCP serverDev tools
Query US Census Bureau data: demographics, economics, and housing statistics.
Ready to connect
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us-dmvMCP serverDev tools
US state DMV data: vehicle and EV registrations, office locators, live wait times
Ready to connectcaution
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us-economic-macro-sec-edgar-onchain-dataMCP serverDev tools
21 paid tools: US macro data, SEC EDGAR filings, on-chain EVM reads. Settled in USDC on Base.
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us-gov-contractsMCP serverDev tools
US state & local government contracts + spending, normalized across jurisdictions — keyless
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us-iso-gridMCP serverDev tools
US ISO Grid MCP — real-time electricity generation, fuel mix, demand,
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us-property-hazard-riskMCP serverDev tools
Flood, wildfire, earthquake, and coastal-storm hazard lookup for a US property.
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us-regulations-mcpMCP serverDev tools
US compliance: HIPAA, CCPA, SOX, GLBA, FERPA, COPPA, FDA, EPA, FFIEC, NYDFS + 4 state privacy laws
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us-tariff-ledgerMCP serverDev tools
US tariff & trade truth: duty actually paid by origin/HS 2017+, HTS rulebook, CBP rulings. No key.
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usaspendingMCP serverDev tools
USAspending MCP — Federal spending data from USAspending.gov API
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usdi-mcp-serverMCP serverDev tools
Live tools for USDi: CPI-indexed exchange rate, contract/pool addresses, and mint/redeem mechanics.
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uselessfactsMCP serverDev tools
Uselessfacts MCP — wraps uselessfacts.jsph.pl API (free, no auth)
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usgs-volcanoMCP serverDev tools
USGS Volcano MCP — Volcano Hazards Program HANS-public feed (no auth)
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.
8,318 of the 11,430 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.