Agent Nexus
Agent-native registry to discover APIs, MCP servers and CLIs, with live health checks.
One address for any MCP client. No sign-in needed on this server.
What it does
5 read1 act
Grouped by tool name. At most: creates or changes data: records, files, settings.
What it costs
FreeOdel charges nothing per call. The publisher may charge for its own service.
Tools
6 · grouped by tool name · checked 8 Oct 2026Read · 5Look things up
- discover_capabilities
- search_registry
- get_entry
- list_categories
- list_entries
Act · 1Change something
- submit_entry
The continuously verified registry of the APIs, MCP servers and CLIs that AI agents call.
Live: https://agentnexus.app · MCP endpoint (no login): https://agentnexus.app/api/public/mcp
Agent Nexus answers one question for an autonomous agent: "what can actually do this, right now, and how exactly do I call it?" Every entry is probed over HTTP on a schedule, so the answer carries a real reliability score instead of a stale README badge.
Listed on the official MCP registry as
app.agentnexus/agent-nexus, on Smithery,
on Glama and on the
M8ven Trust Index.
Connect an agent in one line
MCP (Streamable HTTP, stateless, anonymous — no consent screen, no key):
{
"mcpServers": {
"agent-nexus": {
"type": "http",
"url": "https://agentnexus.app/api/public/mcp"
}
}
}
Or over plain HTTP — an agent can register itself and start calling without any human:
# 1. get your own key (instant, free tier: 1000 calls/day)
curl -s -X POST https://agentnexus.app/api/public/keys \
-H 'content-type: application/json' \
-d '{"agent":"my-agent","purpose":"capability discovery"}'
# 2. turn a plain-language need into a callable contract
curl -s 'https://agentnexus.app/api/public/discover?need=send%20transactional%20email' \
-H 'x-api-key: nx_...'
MCP tools
| Tool | What it does |
|---|---|
discover_capabilities | Plain-language need → ranked callable interfaces with auth, formats, limits, reliability |
search_registry | Keyword search across APIs, MCP servers and CLIs |
get_entry | Full contract for one interface |
list_categories | Browse the taxonomy |
Machine-readable surfaces
| Surface | Purpose |
|---|---|
/llms.txt, /agents.txt | How an agent onboards itself, unattended |
/api/public/registry | Full typed registry |
/api/public/capabilities | Capability index |
/api/public/entries.ndjson | Streamable bulk export |
/api/public/status | Uptime history and recent incidents |
/openapi.json, /server.json | OpenAPI + MCP server manifest |
/.well-known/mcp.json, /.well-known/agent-card.json | Discovery manifests |
/feed.xml | New and updated interfaces |
Human pages
/explore · /connect ·
/status · /pricing ·
/keys
Tiers
| Tier | Who it is for | Daily calls |
|---|---|---|
| Anonymous | Trying it out, no account | 100 |
| Free key | Agent developers | 1 000 |
| Agent Pro | Production agents that must not stall | 50 000 |
| Publisher | API / MCP / CLI vendors: verified badge, monitoring, alerts | — |
Stack
TanStack Start (React 19, Vite), Tailwind CSS v4, Postgres with row-level security, server functions on an edge runtime, scheduled HTTP health probes. Built with Lovable.
Only publishable keys live in this repository; every secret is held server-side.
Development
git clone https://github.com/Strategiumfinancepartner/AgentNexus.git
cd AgentNexus
npm i
npm run dev
Operated by BrainPath.io · support@agentnexus.app
