The Agents API gives your application access to the Codex harness through an OpenAI-managed API.

OpenAI manages sessions, orchestration, context compaction, and recovery while your application provides tools and chooses its execution environment.

Agents can operate in a sandbox where they can execute code, edit files, connect to MCP servers, and produce artifacts.

Model usage is billed at the selected model’s API rates . OpenAI tools use their standard rates , and OpenAI-hosted sandboxes use standard container rates .

Try these complete examples:

Create and run a directory-tree script in an OpenAI-hosted sandbox.

Compare release notes with subagents and combine their findings into one answer.

Explore complete applications:

Incident response agent : investigate alerts and request approval for recovery actions.

Slack bot : investigate requests using connected workplace tools.

Data analyst : answer warehouse questions with read-only SQL.

GitHub issue investigator : reproduce reported bugs and share…