Every refusal from the organisation-key check in front of /api/public now has its own page under Error codes: the HTTP status, what it means, what your system should do, whether retrying can help, and the exact application/problem+json the API sends. Program against code, never against the texts.
This page needs JavaScript. The same content is available as Markdown: /changelog/2026-10-18-error-code-pages.md. Every document for agents is listed in /llms.txt.