Real Agent Cases

Automate defect remediation across C/C++ codebases with Codex CLI

Source date:
Last verified:
Method:
How we verify

Evidence: Company case studyA write-up published by the company that makes the agent or uses it.

Outcome

According to OpenAI's case study, Cisco's Codex CLI defect-repair workflow raised defect resolution throughput 10–15x, and Codex build optimization saved more than 1,500 engineering hours a month.

According to OpenAI:10–15x defect resolution throughput

This is the source's own number. We haven't measured it.

Agent

OpenAI Codex CLI

Prompt Recreated prompt

The source did not publish its exact prompt. This one is our reconstruction from what the source describes.

Reproduce this defect, find the root cause in the codebase, implement a fix, then compile and run the tests, iterating until they pass.

Source

https://openai.com/index/cisco/

By OpenAI · Published May 27, 2026 · Added Oct 15, 2026 · Last verified Oct 15, 2026

  • A one-line `codex exec` loop read the Datasette 1.0a20 upgrade docs, fixed the failing tests, and got the datasette-checkbox plugin passing again.

    OpenAI Codex CLI · Coding · Source date:

  • Using the poster's logged-in browser, Claude in Chrome submitted a bug report to DigitalOcean after finding warnings in the logs.

    Claude in Chrome · Ops · Source date:

  • Diagnose why your Mac is running slow with Claude CodeRecreated promptEvidence: Article or interview

    Anthony Roux uses Claude Code to check load, memory pressure, disk space, stuck processes and swap, dig into causes like caches, Docker and Time Machine snapshots, explain the results and suggest fixes with risk notes.

    Claude Code · Personal · Source date: