{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "TransportInvocation",
  "type": "object",
  "properties": {
    "caller_runtime_id": {
      "type": "string"
    },
    "expires_at_unix_ms": {
      "type": "integer",
      "format": "uint64",
      "minimum": 0
    },
    "native_request_sha256": {
      "type": "array",
      "items": {
        "type": "integer",
        "format": "uint8",
        "maximum": 255,
        "minimum": 0
      },
      "maxItems": 32,
      "minItems": 32
    },
    "provider_request_sha256": {
      "type": "array",
      "items": {
        "type": "integer",
        "format": "uint8",
        "maximum": 255,
        "minimum": 0
      },
      "maxItems": 32,
      "minItems": 32
    },
    "request": {
      "$ref": "#/$defs/ProviderRequest"
    },
    "schema_id": {
      "type": "string"
    }
  },
  "additionalProperties": false,
  "required": [
    "schema_id",
    "caller_runtime_id",
    "expires_at_unix_ms",
    "native_request_sha256",
    "provider_request_sha256",
    "request"
  ],
  "$defs": {
    "CacheRetention": {
      "type": "string",
      "enum": [
        "short",
        "long"
      ]
    },
    "InputItem": {
      "oneOf": [
        {
          "type": "object",
          "properties": {
            "UserText": {
              "type": "object",
              "properties": {
                "text": {
                  "type": "string"
                }
              },
              "additionalProperties": false,
              "required": [
                "text"
              ]
            }
          },
          "additionalProperties": false,
          "required": [
            "UserText"
          ]
        },
        {
          "type": "object",
          "properties": {
            "AssistantText": {
              "type": "object",
              "properties": {
                "text": {
                  "type": "string"
                }
              },
              "additionalProperties": false,
              "required": [
                "text"
              ]
            }
          },
          "additionalProperties": false,
          "required": [
            "AssistantText"
          ]
        },
        {
          "type": "object",
          "properties": {
            "ToolCall": {
              "type": "object",
              "properties": {
                "arguments": {
                  "type": "string"
                },
                "call_id": {
                  "type": "string"
                },
                "name": {
                  "type": "string"
                }
              },
              "additionalProperties": false,
              "required": [
                "call_id",
                "name",
                "arguments"
              ]
            }
          },
          "additionalProperties": false,
          "required": [
            "ToolCall"
          ]
        },
        {
          "type": "object",
          "properties": {
            "ToolResult": {
              "type": "object",
              "properties": {
                "call_id": {
                  "type": "string"
                },
                "output": {
                  "type": "string"
                }
              },
              "additionalProperties": false,
              "required": [
                "call_id",
                "output"
              ]
            }
          },
          "additionalProperties": false,
          "required": [
            "ToolResult"
          ]
        },
        {
          "description": "One provider reasoning block, opaque to every caller: `state` is the\nconnector's own encoding of the whole block. Callers replay it\nverbatim in transcript order and never inspect or branch on it; only\nthe connector of `provider` reads it, and the service drops or refuses\nthe state of any other provider before a backend sees the request.",
          "type": "object",
          "properties": {
            "ReasoningState": {
              "type": "object",
              "properties": {
                "model": {
                  "type": "string"
                },
                "provider": {
                  "type": "string"
                },
                "state": {
                  "description": "MessagePack bin: raw bytes, never an array of integers",
                  "type": "string",
                  "format": "binary"
                }
              },
              "additionalProperties": false,
              "required": [
                "provider",
                "model",
                "state"
              ]
            }
          },
          "additionalProperties": false,
          "required": [
            "ReasoningState"
          ]
        }
      ]
    },
    "ProviderRequest": {
      "type": "object",
      "properties": {
        "cache_retention": {
          "anyOf": [
            {
              "$ref": "#/$defs/CacheRetention"
            },
            {
              "type": "null"
            }
          ]
        },
        "conversation_id": {
          "type": "string"
        },
        "input": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/InputItem"
          }
        },
        "instructions": {
          "type": "string"
        },
        "max_output_tokens": {
          "type": "integer",
          "format": "uint32",
          "minimum": 0
        },
        "model": {
          "type": "string"
        },
        "output_schema_json": {
          "type": [
            "string",
            "null"
          ]
        },
        "parallel_tool_calls": {
          "type": "boolean"
        },
        "reasoning_effort": {
          "anyOf": [
            {
              "$ref": "#/$defs/ReasoningEffort"
            },
            {
              "type": "null"
            }
          ]
        },
        "request_id": {
          "type": "string"
        },
        "schema_id": {
          "type": "string"
        },
        "tool_choice": {
          "$ref": "#/$defs/ToolChoice"
        },
        "tools": {
          "type": "array",
          "items": {
            "$ref": "#/$defs/ToolDefinition"
          }
        }
      },
      "additionalProperties": false,
      "required": [
        "schema_id",
        "request_id",
        "conversation_id",
        "model",
        "instructions",
        "input",
        "tools",
        "tool_choice",
        "parallel_tool_calls",
        "max_output_tokens"
      ]
    },
    "ReasoningEffort": {
      "type": "string",
      "enum": [
        "low",
        "medium",
        "high",
        "max"
      ]
    },
    "ToolChoice": {
      "type": "string",
      "enum": [
        "auto",
        "required"
      ]
    },
    "ToolDefinition": {
      "type": "object",
      "properties": {
        "description": {
          "type": "string"
        },
        "name": {
          "type": "string"
        },
        "parameters_json": {
          "type": "string"
        }
      },
      "additionalProperties": false,
      "required": [
        "name",
        "description",
        "parameters_json"
      ]
    }
  }
}