Research Version

2026-05-12-partial-cycle-codex-refresh-2026-05-12-frontier-v0

Status: complete
Window: 2026-05-12 to 2026-05-12
Signals: 1

Mode: partial_cycle / Model: claude-sonnet-4-6 / Versions: post-v0.131.0

Freshness refresh for Codex. One new finding: PreToolUse updatedInput rewrite (PR #20527). Profile advanced to 2026-05-12. Freshness condition partially satisfied (combined with Gemini CLI refresh in same commit: 2/10).

Sources harvested

Codex

Source contracts

sources/codex.yml

Accepted signals from this run

Codex PreToolUse hooks can now rewrite tool inputs before execution

Artifact contents

Every file the loop produced for this run, anchored in the repo. Internal links go to the rendered page; the repo path opens the raw artifact on GitHub.

manifest

Run manifest runs/2026-05-12-partial-cycle-codex-refresh-2026-05-12-frontier-v0/manifest.yml
finding

Finding: Codex: PreToolUse Hook Input Rewrites runs/2026-05-12-partial-cycle-codex-refresh-2026-05-12-frontier-v0/findings/codex.md
signals

Signals and correction records (YAML) runs/2026-05-12-partial-cycle-codex-refresh-2026-05-12-frontier-v0/signals/frontier-signals.yml
weekly

Weekly digest - codex-fragment runs/2026-05-12-partial-cycle-codex-refresh-2026-05-12-frontier-v0/weekly/codex-fragment.md
audit

Audit notes runs/2026-05-12-partial-cycle-codex-refresh-2026-05-12-frontier-v0/audit.md

Run digest

Codex PreToolUse hooks can now rewrite tool inputs before execution. PR #20527 adds updatedInput support: when a hook returns permissionDecision: "allow" alongside an updatedInput payload, the tool receives the rewritten input rather than the original. Hook authors who previously returned updatedInput expecting rewrites to apply should re-test after upgrading — behavior changes. New capability: hooks can now sanitize, normalize, or redirect tool arguments before dispatch, not just allow or deny.