session-invalid

A problem type of the ckrets.ai API, answered with 401. The answer is application/problem+json (RFC 9457) with type https://ckrets.ai/problems/session-invalid, title, status, detail and requestId. Branch on type, never on title.

#401: prove who you are

An anonymous puzzle create needs a session ticket: POST /v1/sessions with a Turnstile token, then send Ckrets-Proof: session=<ticket>.

#More

• Every type, grouped by what to do: error types.
• The retry rules and headers: limits.
• This page for agents, as Markdown: /problems/session-invalid.md.