Respond to User Action
Submits or declines a pending user action on an agent checkout. The actionId is the pendingUserAction.id from the checkout view, supplied in the path only — including it in the body is rejected.
A submit must carry values that satisfy the action’s responseSchema. The response is an acknowledgement; more actions may follow, so return to polling GET /{id} afterwards.
API scope required: agent-checkouts.update
Authorizations
Client-side API key (ck_...) with the agent-checkouts.* scopes.
JWT identifying the end user, issued by an external auth provider your project trusts.
Path Parameters
The agent checkout id (returned by create).
The id of the pending user action (pendingUserAction.id).

