{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/ai-outfitter/channels/a2a-extensions/elicitation/v1",
  "title": "Outfitter A2A typed elicitation",
  "$defs": {
    "stringProperty": {
      "type": "object",
      "required": ["type"],
      "properties": {
        "type": { "const": "string" },
        "title": { "type": "string" },
        "description": { "type": "string" },
        "default": { "type": "string" },
        "minLength": { "type": "integer", "minimum": 0 },
        "maxLength": { "type": "integer", "minimum": 0 },
        "format": { "enum": ["email", "uri", "date", "date-time"] },
        "enum": {
          "type": "array",
          "items": { "type": "string" },
          "minItems": 1,
          "uniqueItems": true
        },
        "enumNames": {
          "description": "Display labels in enum order and with the same length as enum; equal length is enforced by the runtime.",
          "type": "array",
          "items": { "type": "string" }
        }
      },
      "dependentRequired": { "enumNames": ["enum"] },
      "additionalProperties": false
    },
    "numberProperty": {
      "type": "object",
      "required": ["type"],
      "properties": {
        "type": { "const": "number" },
        "title": { "type": "string" },
        "description": { "type": "string" },
        "default": { "type": "number" },
        "minimum": { "type": "number" },
        "maximum": { "type": "number" }
      },
      "additionalProperties": false
    },
    "integerProperty": {
      "type": "object",
      "required": ["type"],
      "properties": {
        "type": { "const": "integer" },
        "title": { "type": "string" },
        "description": { "type": "string" },
        "default": { "type": "integer" },
        "minimum": { "type": "integer" },
        "maximum": { "type": "integer" }
      },
      "additionalProperties": false
    },
    "booleanProperty": {
      "type": "object",
      "required": ["type"],
      "properties": {
        "type": { "const": "boolean" },
        "title": { "type": "string" },
        "description": { "type": "string" },
        "default": { "type": "boolean" }
      },
      "additionalProperties": false
    },
    "requestedSchema": {
      "type": "object",
      "required": ["type", "properties"],
      "properties": {
        "type": { "const": "object" },
        "properties": {
          "type": "object",
          "additionalProperties": {
            "oneOf": [
              { "$ref": "#/$defs/stringProperty" },
              { "$ref": "#/$defs/numberProperty" },
              { "$ref": "#/$defs/integerProperty" },
              { "$ref": "#/$defs/booleanProperty" }
            ]
          }
        },
        "required": {
          "type": "array",
          "items": { "type": "string" },
          "uniqueItems": true
        }
      },
      "additionalProperties": false
    }
  },
  "oneOf": [
    {
      "type": "object",
      "required": ["message", "requestedSchema"],
      "properties": {
        "message": { "type": "string", "minLength": 1 },
        "requestedSchema": { "$ref": "#/$defs/requestedSchema" }
      },
      "additionalProperties": false
    },
    {
      "type": "object",
      "required": ["action"],
      "properties": {
        "action": { "enum": ["accept", "decline", "cancel"] },
        "content": {
          "type": "object",
          "additionalProperties": {
            "type": ["string", "number", "boolean"]
          }
        }
      },
      "allOf": [
        {
          "if": { "properties": { "action": { "const": "accept" } } },
          "then": { "required": ["content"] },
          "else": { "not": { "required": ["content"] } }
        }
      ],
      "additionalProperties": false
    }
  ]
}