HarnessRouter
HarnessRouter is a self-hosted service that runs several AI coding agents through one API so product teams can add agent tasks to their own apps.
What it is good for
- Running coding agent tasks from your own product backend
- Switching between different AI coding agents without rewriting code
- Keeping agent sessions, files, and streaming in one place
- Self-hosting agent infrastructure with your own provider keys
At a glance
- Who it is for
- Setup
- Works in your browser or phone
Level 1 of 5. Nothing to install. Open a website or app and start.
- Cost
- Free and open source
- Type
- Framework or SDK
- Tasks
- Works with
- Codex, Claude Code, Hermes, Pi, DeepSeek Harness, OpenCode
Momentum
- Rank this week
- #37 in builder tools
- Best rank
- #37 week 44, 2026
- Stars gained last week
- +216
- GitHub stars
- 3,863
GitHub numbers as of Nov 2, 2026. Updated weekly.
Ranking history
Official links
Setup steps are on the official pages. We do not repeat them here, since they change.
Questions
- Is HarnessRouter free?
- Yes. It is free and open source (Apache-2.0 license).
- Do I need to know how to code to use HarnessRouter?
- No. Nothing to install. Open a website or app and start.
- What does HarnessRouter work with?
- According to its own documentation, it works with Codex, Claude Code, Hermes, Pi, DeepSeek Harness, and OpenCode.
- What is HarnessRouter good for?
- Running coding agent tasks from your own product backend, switching between different AI coding agents without rewriting code, keeping agent sessions, files, and streaming in one place, and self-hosting agent infrastructure with your own provider keys.
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