Claude Fable 5.1 & GPT-6 Astra packages are live

api-security

API

Securing an HTTP API — authentication at the edge, per-object authorization, input validation, transport, and the controls that stop the OWASP API…

Choose your model

Available for 11 model families. The engineering substance is the same in each; the structure, checklist phrasing and constraint ordering are tuned per family.