mcp-schema-registry Binding

Defines a binding exposing a Karapace-compatible schema registry's subject, schema, and compatibility operations as a fixed set of intrinsic MCP tools, with client or proxy behavior.

client

Full config

The client kind mcp-schema-registry binding connects directly to the registry named by options.server, with no upstream MCP server, OpenAPI spec, or per-tool schema authoring.

mcp_schema_registry_client:
  type: mcp-schema-registry
  kind: client
  options:
    server: http://karapace-registry.examples.dev:8081
  routes:
    - when:
        - tool: register_schema
      guarded:
        my_guard:
          - kafka-sr:write
    - when:
        - tool: "*"

proxy

Full config

The proxy kind mcp-schema-registry binding forwards every matched tools/call to a single exit, optionally guarding individual tools first, without connecting to the registry itself.

mcp_schema_registry_proxy:
  type: mcp-schema-registry
  kind: proxy
  exit: schema_registry_client
  routes:
    - when:
        - tool: [ register_schema, delete_schema_version, delete_subject, set_compatibility ]
      guarded:
        my_guard:
          - kafka-sr:write
    - when:
        - tool: "*"