TerminalHarness
Codex CLI
OpenAI’s coding harness for repository work, with a CLI, SDKs and an app-server interface for custom products.
Who it is for
Developers who want an OpenAI coding workflow that can inspect, edit and test a repository.
Documented capabilities
- Repository tools and permissions
- SDK automation
- App-server integration
Models and access
OpenAI models supported by Codex; account and plan availability varies.
Pricing and license
CLI source is open source. Model access uses an eligible ChatGPT plan or separately billed API usage. Repository license: Apache-2.0.
Repository snapshot
133,106 stars. Not archived. Stars are not a quality ranking. Published release: rust-v0.166.0.
Repository facts last checked: 2026-11-04. Content check date remains separate.
Sources
Primary sourceOfficial repository and README ↗Primary sourceOfficial website / documentation ↗Primary sourceCurrent repository README ↗Primary sourceCodex SDK documentation ↗Primary sourceCodex app-server documentation ↗Primary sourceLatest stable GitHub release ↗
Content checked: 2026-11-04. This page reflects the current validated published catalog. Update method and live status ↗