Codex Harness

Name: Codex Harness
Brand: OpenAI

Product

by OpenAI

Codex Harness is OpenAI’s agent runtime and orchestration layer for building and embedding Codex-powered software agents. It manages conversation state, streaming progress, tool use, approvals, diffs, and related workflow execution, and can be accessed through interfaces such as the Codex App Server.

1 episode featuring Codex Harness

The a16z Show
AI applications challenge models for the value layer
As model capabilities spread across providers, specialized applications may capture more value by embedding AI in workflows, pricing, and customer context.
Aug 26, 2026 · 37 min

1 episode featuring Codex Harness

AI applications challenge models for the value layer