{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://meta-universe.org/schemas/2.0/discovery.schema.json",
  "title": "Meta-Universe Discovery Document",
  "description": "Public metadata a Universe publishes at /.well-known/meta-universe.json (see 03-federation/Discovery.md).",
  "type": "object",
  "required": ["metaUniverse", "universe", "conformance", "supportedVersions", "endpoints"],
  "additionalProperties": false,
  "properties": {
    "metaUniverse": {
      "type": "object",
      "required": ["version"],
      "additionalProperties": false,
      "properties": { "version": { "const": "2.0" } }
    },
    "universe": {
      "type": "object",
      "required": ["id"],
      "additionalProperties": false,
      "properties": {
        "id": { "$ref": "common.schema.json#/$defs/identifier" },
        "displayName": { "type": "string" },
        "did": { "type": "string", "description": "Optional Decentralized Identifier." }
      }
    },
    "conformance": { "$ref": "common.schema.json#/$defs/conformance" },
    "supportedVersions": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "muc": { "$ref": "common.schema.json#/$defs/semverRange" },
        "mmas": { "$ref": "common.schema.json#/$defs/semverRange" },
        "mufp": { "$ref": "common.schema.json#/$defs/semverRange" }
      }
    },
    "capabilities": { "type": "array", "items": { "type": "string" } },
    "endpoints": {
      "type": "object",
      "required": ["mufp"],
      "additionalProperties": false,
      "properties": { "mufp": { "type": "string", "format": "uri" } }
    },
    "publicSchemas": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["namespace", "fingerprint"],
        "additionalProperties": false,
        "properties": {
          "namespace": { "$ref": "common.schema.json#/$defs/csn" },
          "fingerprint": { "$ref": "common.schema.json#/$defs/fingerprint" },
          "href": { "type": "string", "format": "uri" }
        }
      }
    },
    "federationProfiles": { "type": "array", "items": { "$ref": "common.schema.json#/$defs/csn" } },
    "registries": { "type": "array", "items": { "type": "string", "format": "uri" } }
  }
}