server.json
server.json: The registry metadata file for one server: name, version, remotes, packages, website and repository. Example: Entries on 4 Nov 2026 used the 2025-12-11 server.json schema. Next in the glossary is server/discover: The 2026-07-28 RPC every server MUST implement to advertise supported protocol versions, capabilities and identity.
Definition
The registry metadata file for one server: name, version, remotes, packages, website and repository.
Example, with source
Entries on 4 Nov 2026 used the 2025-12-11 server.json schema. (registry.modelcontextprotocol.io, read 4 November 2026)
Where it appears on this site
Neighbouring terms
- Resource indicator: The RFC 8707 resource parameter that names the MCP server a token is for; clients MUST send it.
- server/discover: The 2026-07-28 RPC every server MUST implement to advertise supported protocol versions, capabilities and identity.
- Stateless MCP: The 2026-07-28 model with no initialize handshake and no Mcp-Session-Id; each request carries version and capabilities in _meta.