How to Set Up Codex with CircleCI Plugin (Full Demo)
Learn how to connect OpenAI Codex to CircleCI so your coding agent can check pipelines, diagnose failed builds, fix bugs, and iterate until your CI pipeline is green.
In this step-by-step demo, we walk through how to install and authenticate the CircleCI CLI, install the CircleCI plugin for Codex, validate your CircleCI configuration, and give Codex direct access to CI feedback.
You’ll see how Codex can:
- Check CircleCI projects and pipeline status
- Validate CircleCI configuration files
- Read build logs and diagnose test failures
- Fix code without modifying passing tests
- Push changes and monitor new pipeline runs
- Iterate through an autonomous validation loop until CI passes
By connecting Codex with CircleCI, AI coding agents can move beyond generating code and use production-grade CI feedback to diagnose, patch, verify, and repeat from a single terminal session.
The CircleCI plugin can also help Codex trigger targeted pipelines, investigate flaky tests, optimize CI configuration, and delegate larger maintenance tasks to Chunk, CircleCI’s autonomous agent.
00:00 Connect Codex to CircleCI
00:25 What you need to get started
00:41 Install the CircleCI CLI
01:01 Create and authenticate an API token
01:41 Install the CircleCI plugin for Codex
02:25 Use CircleCI skills in Codex
03:11 Validate your CircleCI config
03:34 Create a test failure
04:50 Trigger and monitor a CircleCI pipeline
05:09 Diagnose and fix a failed build with Codex
06:16 Push the fix and rerun CI
06:38 Monitor the pipeline from Codex
07:13 Build an autonomous validation loop
07:32 What else Codex and CircleCI can do
Get started with CircleCI: https://circle.ci/4vCirNf
Read the full Codex + CircleCI tutorial: https://circle.ci/4pj5Blh