Setup & Installation

clawhub install agent3-hub

Or with OpenClaw CLI:

openclaw skills install agent3-hub

What This Skill Does

Agent3 Hub is an AI & Machine Learning skill that "Universal AI resource registry — search and invoke agents, MCP servers, and APIs through a single MCP endpoint. Includes Telegram content search, Google search, X/Twitter search, and more.".

Agent3 Hub

Agent3 Hub is an open registry for AI agents, MCP servers, and APIs. It exposes every registered resource as a tool via a single MCP endpoint — connect once, invoke anything.

Endpoint: https://hub.agent3.me/api/mcp Protocol: MCP 2025-03-26 (Streamable HTTP) Get a free API key: https://hub.agent3.me/auth/signup

Setup

Claude Desktop / any MCP client

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "agent3": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://hub.agent3.me/api/mcp"],
      "env": {
        "AGENT3_API_KEY": "a2a_your_key_here"
      }
    }
  }
}

Direct HTTP (curl)

curl -X POST https://hub.agent3.me/api/mcp \
  -H "Authorization: Bearer $AGENT3_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "resources_search",
      "arguments": { "query": "telegram search" }
    }
  }'

Anthropic SDK (Python)

import anthropic

client = anthropic.Anthropic()

response = client.beta.messages.create(
    model="claude-opus-4-6",
    max_tokens=1024,
    mcp_servers=[{
        "type": "url",
        "url": "https://hub.agent3.me/api/mcp",
        "headers": {"Authorization": "Bearer a2a_your_key_here"}
    }],
    messages=[{"role": "user", "content": "Search Telegram for 'AI agents 2026'"}]
)

Available Tools

Tool Description Auth
resources_search Search the registry by keyword or semantic query Required
resources_invoke Invoke any registered resource by ID + operation Required
resources_get Get full details of a resource by ID Required
resources_resolve Resolve a resource endpoint URL Required
resources_stats Get usage stats for a resource Required
agents_search Text search across registered agents Required
agents_semantic_search Semantic/vector search across agents Required
agents_get Get agent details by ID Required
agents_invoke Invoke an A2A agent directly Required
agents_register Register a new agent in the hub Required
tools/list List all available tools Public
resources/list List all resources Public
initialize Server info and capabilities Public

Example: Search Telegram Content

curl -X POST https://hub.agent3.me/api/mcp \
  -H "Authorization: Bearer $AGENT3_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "resources_invoke",
      "arguments": {
        "resourceId": "a23cc5a9-0bfb-4466-acbe-fbc9af723ba4",
        "operationId": "search-content",
        "input": { "query": "AI news" }
      }
    }
  }'

Example: Search Google

curl -X POST https://hub.agent3.me/api/mcp \
  -H "Authorization: Bearer $AGENT3_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 2,
    "method": "tools/call",
    "params": {
      "name": "resources_invoke",
      "arguments": {
        "resourceId": "a5a14786-6738-47e2-a8e7-982ca4a90735",
        "operationId": "search",
        "input": { "query": "MCP protocol 2026" }
      }
    }
  }'

Rate Limits (Free Tier)

Category Daily Limit
Telegram search 20 calls/day
Google search 20 calls/day
X/Twitter search 20 calls/day
Registry search & get Unlimited

Limits reset at midnight UTC. Upgrade available at hub.agent3.me.

Resource Types

Type Description
agent A2A protocol AI agents
api REST / GraphQL / MCP web services
sdk Software development kits
data Data services and feeds

Links

Version History

Latest version: 1.0.0

First published: Mar 17, 2026. Last updated: Mar 17, 2026.

1 version released.

Frequently Asked Questions

Is Agent3 Hub free to use?
Yes. Agent3 Hub is a free, open-source skill available on the OpenClaw Skills Registry.
What platforms does Agent3 Hub support?
It runs on any platform that supports OpenClaw, including macOS, Linux, and Windows.