Harness is the essential workflow framework for custom Codex agent systems.
It gives Codex a repeatable structure for custom workflows: graph, specs, capabilities, artifacts, runtime trace, and fail-closed verification.
Stop running agents freestyle.
Turn custom workflows into governed harnesses with:
- Role specs
- Execution specs
- Output specs
- Capability registries
- Artifact evidence
- Runtime traces
- Explicit failure states
Harness is the workflow framework for Codex agents.
Build custom agent systems with specs, artifacts, traces, and fail-closed verification.
I built Harness as a Codex workflow framework.
Codex is powerful, but complex agent work needs more than prompts. Harness turns custom workflows into structured harnesses with role specs, execution specs, output specs, capability registries, artifact evidence, and runtime traces.
It is distributed today through a GitHub-backed Codex marketplace:
codex plugin marketplace add https://github.com/EvanAI0331/harness-codex-marketplace.git --ref v0.1.8- GitHub README
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