What problem does it solve? Codex CLI setups accumulate configuration drift, misconfigured model providers, permission issues, and hard-to-diagnose failures like 401, 403, 404, 413, SSE interruptions, timeouts, and remote compaction errors. This Skill performs a read-only health audit of your local Codex configuration first, then proposes and safely applies verified changes only after explicit confirmation. ## Core Features & Use Cases - Read-Only Config Audit: Runs a Node.js audit script that fingerprints config.toml, checks auth.json permissions, scans recent session logs for classified error incidents, and probes the installed Codex CLI without ever exposing secrets, tokens, or full URLs. - Failure Attribution: Classifies HTTP status codes, SSE interruptions, timeouts, and compaction failures into local config, authentication, provider contract, external proxy, or upstream service domains using an evidence gradient. - Confirmed Atomic Writes: Presents a redacted diff confirmation package, creates timestamped backups, writes via atomic rename, and rolls back automatically if verification with codex doctor fails. - Use Case: Your Codex CLI suddenly returns 413 errors during remote compaction behind an Nginx reverse proxy. The Skill audits your setup, attributes the failure to the proxy body-size limit with evidence, suggests a local mitigation, and produces a server handoff recommendation. ## Quick Start Ask the agent to run a read-only health check of my local Codex configuration and diagnose any recent errors before suggesting changes.