Codex

Profiles

• (no profile) — read-only analysis (no compilation, no tests)
• --profile edit — local edits, build, or test (workspace-write, full-auto)
• --profile full — network or broad filesystem access (danger-full-access, full-auto)

Use --profile edit whenever the task involves go test, go build, or any command that writes build artifacts. The default read-only sandbox blocks all writes including compiler temp dirs.

For complex tasks, add --config model_reasoning_effort="xhigh".

Model Selection

Default to the project model in .codex/config.toml (gpt-5.4).

Use --model gpt-5.3-codex-spark for speed-first interactive work: