Claude Fable 5.1 & GPT-6 Astra packages are live

path-traversal

Security

Confining file access to an intended directory — resolve-then-verify, symlink and archive pitfalls, and why blocking "../" does not work.

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.