MCP Tool Discovery and Call
An agent discovers this server from the AI Catalog, reads its Server Card, asks what it can do with server/discover, lists tools, and calls one. Revision 2026-07-28 has no handshake: every request stands alone and carries its own protocol version and client identity.
MCP Tool Discovery and Call
An agent discovers this server from the AI Catalog, reads its Server Card, asks what it can do with server/discover, lists tools, and calls one. Revision 2026-07-28 has no handshake: every request stands alone and carries its own protocol version and client identity.
Sequence Diagram
Click any step for details
Request
Response
Redirect
Internal
Step-by-Step Breakdown
1
Read the AI Catalog
Agent → Origin
2
Fetch the Server Card
Agent → MCP Server
3
Call server/discover
Agent → MCP Server
4
List tools
Agent → MCP Server
5
Call a tool
Agent → MCP Server
Token Inspector
Specs for this flow
Sections of the protocol that normatively define this flow, plus the security considerations that apply to it.