{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://fauna.com/schemas/fauna/query.json",
  "title": "Fauna Query",
  "description": "Represents the request and response structures for executing Fauna Query Language (FQL) v10 queries via the Core HTTP API /query/1 endpoint. Includes the query request body, successful response format, and error response format.",
  "type": "object",
  "$defs": {
    "QueryRequest": {
      "type": "object",
      "description": "Request body for the /query/1 endpoint.",
      "required": ["query"],
      "properties": {
        "query": {
          "type": "string",
          "description": "The FQL v10 query string to execute against the Fauna database."
        },
        "arguments": {
          "type": "object",
          "additionalProperties": true,
          "description": "Named arguments to pass to the query. These are available as variables within the FQL query and provide a safe way to inject values without string interpolation."
        }
      }
    },
    "QueryResponse": {
      "type": "object",
      "description": "Successful response from the /query/1 endpoint.",
      "properties": {
        "data": {
          "description": "The query result data. The structure depends on the query executed and the X-Format header value (tagged or simple)."
        },
        "static_type": {
          "type": "string",
          "description": "The static type of the query result as determined by Fauna's type system."
        },
        "txn_ts": {
          "type": "integer",
          "description": "Transaction timestamp in microseconds since the Unix epoch."
        },
        "stats": {
          "$ref": "#/$defs/QueryStats"
        },
        "schema_version": {
          "type": "integer",
          "description": "The schema version at the time the query was executed."
        },
        "summary": {
          "type": "string",
          "description": "Optional summary information about the query execution."
        },
        "query_tags": {
          "type": "string",
          "description": "Tags associated with the query for logging and monitoring purposes."
        }
      }
    },
    "ErrorResponse": {
      "type": "object",
      "description": "Error response from the /query/1 endpoint. Contains an error object instead of data.",
      "required": ["error"],
      "properties": {
        "error": {
          "type": "object",
          "required": ["code", "message"],
          "properties": {
            "code": {
              "type": "string",
              "description": "Machine-readable error code. Fauna error codes are part of the API contract and are safe to write programmatic logic against.",
              "enum": [
                "invalid_query",
                "invalid_request",
                "abort",
                "unauthorized",
                "forbidden",
                "not_found",
                "contention",
                "limit_exceeded",
                "time_out",
                "internal_error",
                "constraint_failure"
              ]
            },
            "message": {
              "type": "string",
              "description": "Human-readable error message describing the failure."
            },
            "constraint_failures": {
              "type": "array",
              "items": {
                "$ref": "#/$defs/ConstraintFailure"
              },
              "description": "Details about check or unique constraint failures when the error code is constraint_failure."
            }
          }
        },
        "summary": {
          "type": "string",
          "description": "Detailed error information including the location of the error in the query."
        },
        "txn_ts": {
          "type": "integer",
          "description": "Transaction timestamp of the failed request."
        },
        "stats": {
          "$ref": "#/$defs/QueryStats"
        },
        "schema_version": {
          "type": "integer",
          "description": "Schema version at the time of the failed request."
        }
      }
    },
    "QueryStats": {
      "type": "object",
      "description": "Operational statistics for query execution including compute, read, and write operations consumed.",
      "properties": {
        "compute_ops": {
          "type": "integer",
          "minimum": 0,
          "description": "Number of Transactional Compute Operations consumed by the query."
        },
        "read_ops": {
          "type": "integer",
          "minimum": 0,
          "description": "Number of Transactional Read Operations consumed."
        },
        "write_ops": {
          "type": "integer",
          "minimum": 0,
          "description": "Number of Transactional Write Operations consumed."
        },
        "query_time_ms": {
          "type": "integer",
          "minimum": 0,
          "description": "Query execution time in milliseconds."
        },
        "contention_retries": {
          "type": "integer",
          "minimum": 0,
          "description": "Number of times the transaction was retried due to contention."
        },
        "storage_bytes_read": {
          "type": "integer",
          "minimum": 0,
          "description": "Number of bytes read from storage."
        },
        "storage_bytes_write": {
          "type": "integer",
          "minimum": 0,
          "description": "Number of bytes written to storage."
        },
        "rate_limits_hit": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "List of rate limits that were hit during query execution."
        }
      }
    },
    "ConstraintFailure": {
      "type": "object",
      "description": "Details about a specific check or unique constraint failure.",
      "properties": {
        "paths": {
          "type": "array",
          "items": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "description": "Field paths that triggered the constraint failure."
        },
        "message": {
          "type": "string",
          "description": "Description of the constraint that was violated."
        }
      }
    }
  }
}