A valid request URL is required to generate request examples{
"receivedAt": "2023-11-07T05:31:56Z",
"sentAt": "2023-11-07T05:31:56Z"
}{
"error": {
"code": "unauthorized",
"reason": "missing_credentials",
"hint": "<string>"
}
}{
"error": {
"code": "rate_limited",
"message": "<string>"
}
}{
"error": {
"code": "backend_resolution_failed",
"message": "<string>",
"retryable": true
}
}Read the server's clock
The server’s clock, for a player lining its timestamps up with the device’s. receivedAt is when the request reached the handler and sentAt is when the answer left it, both ISO-8601 with milliseconds. With your own send and receive times that gives the usual four-timestamp offset estimate. Any credential may call it; responses are no-store.
Hosted deployments only. A local checkout does not mount this route, so calling it there is a 404.
A valid request URL is required to generate request examples{
"receivedAt": "2023-11-07T05:31:56Z",
"sentAt": "2023-11-07T05:31:56Z"
}{
"error": {
"code": "unauthorized",
"reason": "missing_credentials",
"hint": "<string>"
}
}{
"error": {
"code": "rate_limited",
"message": "<string>"
}
}{
"error": {
"code": "backend_resolution_failed",
"message": "<string>",
"retryable": true
}
}Authorizations
The control surface credential. Send Authorization: Bearer <token>.
Two kinds of token are accepted and they are told apart by shape, not by a separate header. A token beginning pbk_ is an org scoped API key, whose public half and secret half are generated together and of which only a hash of the secret is ever stored; anything else is treated as an OAuth 2.1 access token and verified against the authorization server's keys.
Both resolve to the same context: an org, a principal and a set of scopes. Nothing downstream branches on which channel you used, with one deliberate exception, key management, which requires a signed-in person so that a key can never mint another key.
Scopes are enforced when MCP tools are REGISTERED rather than when they are called, so a tool your credential cannot use is absent from tools/list rather than refused mid gesture.