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codex-exec

Run one prompt through headless Codex and capture the result. Use when: wanting a one-shot `codex exec` run or CI step. Not for batches or retries.

plugin/skills/codex-exec/SKILL.md

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Observed behavior
Network or broad shell
Last checked
Nov 5, 2026

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452
Repository last updated
Nov 6, 2026
License
Apache-2.0

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# Codex Exec — one-shot runtime adapter

Run exactly one caller-supplied Codex prompt as one process and capture its
result. This skill does not choose work, retry, validate or continue.

## Rules that change the command

- **Sandbox from declared effects.** `-s read-only` for review or analysis,
  `workspace-write` only for authorized edits, and network or wider access only
  when the caller explicitly requires those effects. "In case it needs it" is
  not a declared effect. `-s` limits only Codex's shell commands; the user's
  `config.toml` still starts its MCP servers. For review and CI add
  `--ignore-user-config` (auth still loads) and `--ephemeral`, or report the
  inherited MCP servers as undeclared effects. A permission denial inside the
  run (`EPERM`, "Operation not permitted") shows only what the mode blocks, not