Signup

Creates a new Pulumi Cloud account programmatically, without human intervention, and returns an access token plus a claim URL. The caller must first obtain a challenge from GET /api/agents/signup/challenge and submit the computed proof of work here. Intended for agent contexts: a CLI that detects it is running on behalf of an agent and finds no local credentials issues the challenge call, solves it, then calls this endpoint, writes the returned access token to its credentials file, and surfaces the claim URL to its human so the human can take ownership of the account later. The account is a Pulumi Individual Account in a pre-claim state; operations that require a verified email (such as creating agent tasks) are unavailable until the account is claimed.