- name
- agent3-hub
- version
- 1.0.0
- description
- 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.
- tags
- ["mcp", "registry", "search", "agents", "api", "telegram", "google", "twitter", "a2a"]
- metadata
- openclaw
- requires
- env
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
- Registry: https://hub.agent3.me
- Docs: https://hub.agent3.me/docs
- Get API key: https://hub.agent3.me/auth/signup
- MCP endpoint: https://hub.agent3.me/api/mcp