{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schemas.kxm.dev/model.schema.json",
  "title": "KXM model route",
  "description": "Live kxm.model.v2 route. Admission status is recorded on the route. This schema does not dispatch.",
  "type": "object",
  "required": ["schema", "harness", "model", "vendor", "status", "permissions"],
  "additionalProperties": false,
  "properties": {
    "schema": { "const": "kxm.model.v2" },
    "id": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9]*(?:-[a-z0-9]+)*$",
      "minLength": 1,
      "maxLength": 64
    },
    "aliases": {
      "type": "array",
      "description": "Deprecated route ids that still resolve to this file. A deprecation warning is printed when one is used.",
      "items": {
        "type": "string",
        "pattern": "^[a-z][a-z0-9]*(?:-[a-z0-9]+)*$",
        "minLength": 1,
        "maxLength": 64
      },
      "uniqueItems": true,
      "maxItems": 16
    },
    "harness": {
      "type": "string",
      "pattern": "^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$",
      "minLength": 1,
      "maxLength": 64
    },
    "model": { "type": "string", "minLength": 1, "maxLength": 200 },
    "vendor": { "type": "string", "minLength": 1, "maxLength": 64 },
    "status": { "enum": ["admitted", "candidate", "retired"] },
    "permissions": {
      "type": "array",
      "items": { "enum": ["edit", "read-only"] },
      "minItems": 1,
      "maxItems": 2,
      "uniqueItems": true
    },
    "origin": {
      "type": "object",
      "required": ["source", "sha256"],
      "additionalProperties": false,
      "properties": {
        "source": { "type": "string", "minLength": 1, "maxLength": 512 },
        "sha256": { "type": "string", "pattern": "^[a-f0-9]{64}$" }
      }
    },
    "thinking": { "type": "string", "minLength": 1, "maxLength": 64 },
    "tags": {
      "type": "array",
      "items": {
        "type": "string",
        "pattern": "^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$",
        "minLength": 1,
        "maxLength": 64
      },
      "uniqueItems": true,
      "maxItems": 32
    },
    "capabilities": {
      "type": "array",
      "items": {
        "type": "string",
        "pattern": "^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$",
        "minLength": 1,
        "maxLength": 64
      },
      "uniqueItems": true,
      "maxItems": 32
    },
    "priority": { "type": "integer", "minimum": -10000, "maximum": 10000 },
    "fallbacks": {
      "type": "array",
      "maxItems": 8,
      "items": {
        "oneOf": [
          {
            "type": "object",
            "required": ["profile"],
            "additionalProperties": false,
            "properties": {
              "profile": {
                "type": "string",
                "pattern": "^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$",
                "minLength": 1,
                "maxLength": 64
              }
            }
          },
          {
            "type": "object",
            "required": ["tag"],
            "additionalProperties": false,
            "properties": {
              "tag": {
                "type": "string",
                "pattern": "^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$",
                "minLength": 1,
                "maxLength": 64
              },
              "capabilities": {
                "type": "array",
                "items": {
                  "type": "string",
                  "pattern": "^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$",
                  "minLength": 1,
                  "maxLength": 64
                },
                "uniqueItems": true,
                "maxItems": 32
              }
            }
          },
          {
            "type": "object",
            "required": ["provider", "model"],
            "additionalProperties": false,
            "properties": {
              "provider": {
                "type": "string",
                "pattern": "^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$",
                "minLength": 1,
                "maxLength": 64
              },
              "model": { "type": "string", "minLength": 1, "maxLength": 200 }
            }
          }
        ]
      }
    },
    "limits": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "contextTokens": { "type": "integer", "minimum": 1 },
        "outputTokens": { "type": "integer", "minimum": 1 },
        "timeoutMs": { "type": "integer", "minimum": 0, "maximum": 31536000000 }
      }
    }
  },
  "if": {
    "properties": { "harness": { "const": "pi" } },
    "required": ["harness"]
  },
  "then": { "required": ["origin"] }
}