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Agent Nexus MCP Server

by agentnexus Your server? Claim it
answering

Agent Nexus is answering right now. Last checked 6 min ago. It exposes 5 tools.

Agent-native registry to discover APIs, MCP servers and CLIs, with live health checks.

Uptime history 43 hours of history
43 hours agonow
100.0%
Uptime 24h
184 of 184 checks
5
Tools
read from the server
946 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 3

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 18 September 2026. No other catalogue keeps this.

18 Sep 2 tools changed the parameters they ask for discover_capabilities, search_registry
18 Sep a tool appeared list_entries

Nothing serious here today

Today is the operative word: we check Agent Nexus every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

run in your terminal
claude mcp add agent-nexus --transport http https://agentnexus.app/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "agent-nexus": {
      "url": "https://agentnexus.app/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.agent-nexus]
url = "https://agentnexus.app/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "agent-nexus": {
      "url": "https://agentnexus.app/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "agent-nexus": {
      "url": "https://agentnexus.app/mcp"
    }
  }
}

This server publishes 1 more address. The block above uses the one we reach during checks; the full list is under Endpoints below, and the author may intend a particular one for your client.

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

categories
list_categories
List the three interface layers Agent Nexus indexes (APIs, MCPs, CLIs) with the number of approved entries in each.
discover
discover_capabilities
Match a natural-language need (e.g. 'send a transactional email', 'query Postgres') to the interfaces that can do it, ranked by capability match and verified reliability. Returns everything needed to call them: endpoint, auth mode, auth parameters, formats, rate limit and cost. Always returns a payload: when nothing matches, `coverage` is 'none', `uncovered` is true and the entries returned are reliable starting points, not matches.
entries
list_entries
List every approved entry in the Agent Nexus registry, page by page. Returns up to 50 entries per page, ordered by slug, with the total count so you can page through the whole catalogue. Use search_registry for keyword lookup instead.
entry
get_entry
Fetch one approved Agent Nexus registry entry by slug, including its endpoint, auth method and last health probe.
registry
search_registry
Search the Agent Nexus registry of approved APIs, MCP servers and CLIs by keyword and optional category.

Endpoints

URLTransportStateLatencyChecked
https://agentnexus.app/mcp streamable-http answering 652 ms 6 min ago
https://agentnexus.app/api/public/mcp streamable-http answering 1303 ms 6 min ago

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Agent Nexus — questions

Answers built from our own checks of this server.

What can Agent Nexus do?
It exposes 5 tools, read directly from the server on our last check. Among them: discover_capabilities, get_entry, list_categories, list_entries, search_registry. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Agent Nexus working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 184 of 184 checks got a reply (100.0%), average response time 946 ms. The bar chart above shows every period we have measured.
How do I connect Agent Nexus?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Agent Nexus need an API key?
No. Agent Nexus completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Agent Nexus?
It answers our handshake in 946 ms on average, which is faster than 10% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.