McpResponse

A JSON-RPC 2.0 response envelope.

Exactly one of result or error is present. Protocol-level failures are still HTTP 200, as JSON-RPC requires; only a missing or invalid bearer token produces a non-2xx status.

error object

oneOf

• null
• JsonRpcError

null

id objectrequired

Echo of the request id (a string or integer), 1 when the request omitted one, or null when the body was not parseable JSON.

oneOf

• integer<int64>
• string
• null

An integer id.

integer<int64>

An integer id.

Example: 1

jsonrpcstringrequired

Protocol version. Always 2.0.

Example: 2.0

resultobject | nullnullable

Tool result on success.

McpResponse

{
  "error": "null",
  "id": 1,
  "jsonrpc": "2.0",
  "result": "Unknown Type: object,null"
}