registry.schema.json

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://portable-context-protocol.org/schema/v1/registry.schema.json",
  "title": "PCP device registry (sources.json)",
  "description": "A user-curated directory of the PCP context sources on one device. See spec/registry-v1.md.",
  "type": "object",
  "required": ["pcp_registry_version", "sources"],
  "additionalProperties": false,
  "properties": {
    "pcp_registry_version": { "const": "1.0" },
    "sources": { "type": "array", "items": { "$ref": "#/$defs/source" } },
    "extensions": { "type": "object" }
  },
  "$defs": {
    "source": {
      "type": "object",
      "required": ["id", "name", "transport"],
      "additionalProperties": false,
      "properties": {
        "id": { "type": "string", "description": "Stable local id for this source." },
        "name": { "type": "string" },
        "kind": { "type": "string", "description": "Freeform descriptor, e.g. 'knowledge-studio', 'context-store', 'sidecar'." },
        "description": { "type": "string" },
        "transport": { "enum": ["stdio", "http"] },
        "command": { "type": "string", "description": "stdio: executable to launch the MCP server." },
        "args": { "type": "array", "items": { "type": "string" } },
        "env": { "type": "object", "additionalProperties": { "type": "string" } },
        "url": { "type": "string", "description": "http: the MCP endpoint." },
        "headers": { "type": "object", "additionalProperties": { "type": "string" } },
        "added_by": { "enum": ["user", "app", "sidecar"] },
        "extensions": { "type": "object" }
      }
    }
  }
}