Module: Ask::MCP::Native::Messages::ErrorCodes

Defined in:: lib/ask/mcp/native/messages.rb

Overview

Standard JSON-RPC error codes

Constant Summary collapse

PARSE_ERROR =

-32700

INVALID_REQUEST =

-32600

METHOD_NOT_FOUND =

-32601

INVALID_PARAMS =

-32602

INTERNAL_ERROR =

-32603

TOOL_NOT_FOUND = MCP-specific error codes (legacy, 2025-06-18 and earlier)

-32000

RESOURCE_NOT_FOUND =

-32001

PROMPT_NOT_FOUND =

-32002

AUTH_ERROR =

-32003

CONNECTION_ERROR =

-32004

TIMEOUT_ERROR =

-32005

HEADER_MISMATCH = 2026-07-28: the -32020..-32099 range is reserved for the MCP specification (error code allocation policy); older codes were renumbered.

-32020

MISSING_REQUIRED_CLIENT_CAPABILITY =

-32021

UNSUPPORTED_PROTOCOL_VERSION =

-32022

ERROR_MESSAGES =

{
  PARSE_ERROR      => "Parse error",
  INVALID_REQUEST  => "Invalid request",
  METHOD_NOT_FOUND => "Method not found",
  INVALID_PARAMS   => "Invalid params",
  INTERNAL_ERROR   => "Internal error",
  TOOL_NOT_FOUND   => "Tool not found",
  RESOURCE_NOT_FOUND => "Resource not found",
  PROMPT_NOT_FOUND => "Prompt not found",
  AUTH_ERROR       => "Authentication error",
  CONNECTION_ERROR => "Connection error",
  TIMEOUT_ERROR    => "Timeout error",
  HEADER_MISMATCH  => "Header mismatch",
  MISSING_REQUIRED_CLIENT_CAPABILITY => "Missing required client capability",
  UNSUPPORTED_PROTOCOL_VERSION => "Unsupported protocol version"
}.freeze