Variant

error-code

Standard JSON-RPC error codes

variant error-code {
  parse-error(error),
  invalid-request(error),
  method-not-found(error),
  invalid-params(error),
  internal-error(error),
  server(error),
  json-rpc(error),
  mcp(error),
}

Cases

Case	Payload	Description
parse-error	error	Parse error (-32700)
invalid-request	error	Invalid request (-32600)
method-not-found	error	Method not found (-32601)
invalid-params	error	Invalid parameters (-32602)
internal-error	error	Internal error (-32603)
server	error	JSON-RPC server error (-32000 to -32099)
json-rpc	error	Other JSON-RPC error (-32768 to -32000, excluding above)
mcp	error	Unspecified MCP error