HarnessRouter is an API that lets you integrate top AI agents like Codex, Claude Code, and Hermes into your app with a single endpoint, handling sessions, streaming, files, and reviewable artifacts.
Bring the world's best AI agents into your app with one API
- Integrating coding agents into your product's backend
- Building AI-powered code review and generation features
- Enabling autonomous agent workflows with configurable permissions
- Creating apps that generate and display reviewable artifacts like diffs and files
- Drop the AGENTS.md file into Cursor or Claude Code
- Describe your feature in natural language
- The coding agent automatically wires the endpoint, config, and UI
- Configure the harness (instructions, model policy, tools, permissions) as needed
- Use the single API to run sessions and stream results
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