{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://llmo.org/spec/v0.1/schema.json",
  "title": "LLMO Document v0.1",
  "description": "Schema for llmo.json documents conforming to LLMO Specification v0.1.",
  "type": "object",
  "required": [
    "llmo_version",
    "entity",
    "claims",
    "valid_from",
    "valid_until",
    "document_id"
  ],
  "additionalProperties": true,
  "properties": {
    "llmo_version": {
      "type": "string",
      "description": "Spec version this document conforms to.",
      "const": "0.1"
    },
    "document_id": {
      "type": "string",
      "description": "Stable opaque identifier for this document, unique within the entity.",
      "minLength": 1,
      "maxLength": 128,
      "pattern": "^[A-Za-z0-9._:-]+$"
    },
    "valid_from": {
      "type": "string",
      "format": "date-time",
      "description": "RFC 3339 timestamp. The document is authoritative from this moment."
    },
    "valid_until": {
      "type": "string",
      "format": "date-time",
      "description": "RFC 3339 timestamp. The document is stale after this moment. Must be at most 365 days after valid_from."
    },
    "supersedes": {
      "type": "array",
      "description": "Document IDs of prior llmo.json documents on the same domain that this document supersedes.",
      "items": {
        "type": "string",
        "minLength": 1,
        "maxLength": 128,
        "pattern": "^[A-Za-z0-9._:-]+$"
      },
      "uniqueItems": true
    },
    "entity": {
      "$ref": "#/$defs/entity"
    },
    "claims": {
      "type": "array",
      "description": "Ordered array of claim objects. May be empty but must be present.",
      "items": {
        "$ref": "#/$defs/claim"
      }
    },
    "signature": {
      "$ref": "#/$defs/signature"
    }
  },
  "$defs": {
    "entity": {
      "type": "object",
      "required": ["name", "primary_domain"],
      "additionalProperties": true,
      "properties": {
        "name": {
          "type": "string",
          "description": "Human-readable entity name.",
          "minLength": 1,
          "maxLength": 512
        },
        "primary_domain": {
          "type": "string",
          "description": "The registrable domain at which this llmo.json is authoritative.",
          "pattern": "^([a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?\\.)+[a-z]{2,}$"
        },
        "aliases": {
          "type": "array",
          "description": "Other domains owned by the entity.",
          "items": {
            "type": "string",
            "pattern": "^([a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?\\.)+[a-z]{2,}$"
          },
          "uniqueItems": true
        },
        "legal_identifiers": {
          "type": "object",
          "additionalProperties": true,
          "properties": {
            "jurisdiction": {
              "type": "string",
              "description": "ISO 3166 country or subdivision code."
            },
            "registration_number": {
              "type": "string"
            }
          }
        },
        "external_ids": {
          "type": "object",
          "description": "Pointers into external identity systems. Keys are system names; values are identifiers.",
          "additionalProperties": {
            "type": "string"
          },
          "properties": {
            "wikidata": {
              "type": "string",
              "pattern": "^Q[0-9]+$"
            },
            "duns": {
              "type": "string",
              "pattern": "^[0-9]{9}$"
            },
            "lei": {
              "type": "string",
              "pattern": "^[A-Z0-9]{20}$"
            },
            "did": {
              "type": "string",
              "pattern": "^did:[a-z0-9]+:.+$"
            }
          }
        }
      }
    },
    "claim": {
      "type": "object",
      "required": ["type", "statement"],
      "additionalProperties": true,
      "properties": {
        "type": {
          "type": "string",
          "description": "Core claim type (no dots) or namespaced extension type (contains dots).",
          "minLength": 1,
          "maxLength": 128,
          "pattern": "^[a-z][a-z0-9_]*(\\.[a-z][a-z0-9_]*)*$"
        },
        "statement": {
          "type": "object",
          "description": "Type-specific payload."
        },
        "asserted_at": {
          "type": "string",
          "format": "date-time"
        },
        "confidence": {
          "type": "string",
          "enum": ["authoritative", "advisory", "provisional"],
          "default": "authoritative"
        },
        "claim_id": {
          "type": "string",
          "minLength": 1,
          "maxLength": 128,
          "pattern": "^[A-Za-z0-9._:-]+$"
        },
        "signature": {
          "$ref": "#/$defs/signature"
        }
      },
      "allOf": [
        {
          "if": {
            "properties": { "type": { "const": "canonical_urls" } }
          },
          "then": {
            "properties": {
              "statement": { "$ref": "#/$defs/statement_canonical_urls" }
            }
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "official_channels" } }
          },
          "then": {
            "properties": {
              "statement": { "$ref": "#/$defs/statement_official_channels" }
            }
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "product_facts" } }
          },
          "then": {
            "properties": {
              "statement": { "$ref": "#/$defs/statement_product_facts" }
            }
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "personnel" } }
          },
          "then": {
            "properties": {
              "statement": { "$ref": "#/$defs/statement_personnel" }
            }
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "disavowal" } }
          },
          "then": {
            "properties": {
              "statement": { "$ref": "#/$defs/statement_disavowal" }
            }
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "supersedes" } }
          },
          "then": {
            "properties": {
              "statement": { "$ref": "#/$defs/statement_supersedes" }
            }
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "pointer" } }
          },
          "then": {
            "properties": {
              "statement": { "$ref": "#/$defs/statement_pointer" }
            }
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "identity" } }
          },
          "then": {
            "properties": {
              "statement": { "$ref": "#/$defs/statement_identity" }
            }
          }
        }
      ]
    },
    "statement_identity": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "founded": {
          "type": "string",
          "description": "RFC 3339 date, year, or year-month."
        },
        "headquarters": { "type": "string" },
        "description": { "type": "string", "maxLength": 2048 }
      }
    },
    "statement_canonical_urls": {
      "type": "object",
      "additionalProperties": { "type": "string", "format": "uri" },
      "properties": {
        "homepage": { "type": "string", "format": "uri" },
        "docs": { "type": "string", "format": "uri" },
        "api": { "type": "string", "format": "uri" },
        "status": { "type": "string", "format": "uri" },
        "support": { "type": "string", "format": "uri" },
        "pricing": { "type": "string", "format": "uri" },
        "security": { "type": "string", "format": "uri" },
        "agent_manifest": { "type": "string", "format": "uri" },
        "mcp_manifest": { "type": "string", "format": "uri" }
      }
    },
    "statement_official_channels": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "email_domains": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^([a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?\\.)+[a-z]{2,}$"
          },
          "uniqueItems": true
        },
        "social": {
          "type": "object",
          "additionalProperties": { "type": "string" }
        },
        "community": {
          "type": "object",
          "additionalProperties": { "type": "string", "format": "uri" }
        }
      }
    },
    "statement_product_facts": {
      "type": "object",
      "required": ["products"],
      "properties": {
        "products": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["name"],
            "additionalProperties": true,
            "properties": {
              "name": { "type": "string" },
              "url": { "type": "string", "format": "uri" },
              "status": {
                "type": "string",
                "enum": [
                  "generally_available",
                  "beta",
                  "alpha",
                  "preview",
                  "deprecated",
                  "end_of_life"
                ]
              },
              "current_version": { "type": "string" }
            }
          }
        }
      }
    },
    "statement_personnel": {
      "type": "object",
      "required": ["spokespeople"],
      "properties": {
        "spokespeople": {
          "type": "array",
          "items": {
            "type": "object",
            "required": ["role", "name"],
            "additionalProperties": true,
            "properties": {
              "role": { "type": "string" },
              "name": { "type": "string" },
              "verification": { "type": "string", "format": "uri" }
            }
          }
        }
      }
    },
    "statement_disavowal": {
      "type": "object",
      "required": ["disavowed"],
      "properties": {
        "disavowed": {
          "type": "array",
          "minItems": 1,
          "items": {
            "type": "object",
            "required": ["what", "detail"],
            "additionalProperties": true,
            "properties": {
              "what": { "type": "string" },
              "detail": { "type": "string", "maxLength": 2048 },
              "url": { "type": "string", "format": "uri" }
            }
          }
        }
      }
    },
    "statement_supersedes": {
      "type": "object",
      "required": ["superseded"],
      "properties": {
        "superseded": {
          "type": "array",
          "minItems": 1,
          "items": {
            "type": "object",
            "required": ["what", "reason"],
            "additionalProperties": true,
            "properties": {
              "what": { "type": "string" },
              "url": { "type": "string", "format": "uri" },
              "reason": { "type": "string", "maxLength": 2048 }
            }
          }
        }
      }
    },
    "statement_pointer": {
      "type": "object",
      "required": ["scope", "url"],
      "additionalProperties": true,
      "properties": {
        "scope": { "type": "string" },
        "standard": { "type": "string" },
        "url": { "type": "string", "format": "uri" }
      }
    },
    "signature": {
      "type": "object",
      "description": "JWS signature over the enclosing object (document or claim) with its own signature field removed, canonicalized per RFC 8785 (JCS).",
      "required": ["protected", "signature"],
      "additionalProperties": false,
      "properties": {
        "protected": {
          "type": "string",
          "description": "Base64url-encoded JWS protected header. MUST include alg (ES256, ES384, or EdDSA) and kid.",
          "pattern": "^[A-Za-z0-9_-]+$"
        },
        "signature": {
          "type": "string",
          "description": "Base64url-encoded signature bytes.",
          "pattern": "^[A-Za-z0-9_-]+$"
        }
      }
    }
  }
}