HarnessRouter

Harnessrouter — Development skill for Claude Code

Development community

HarnessRouter Community Edition: the self-hosted, Apache-2.0 edition of the unified interface for agent harnesses.

How to install Harnessrouter

This entry records only its repository, not the path inside it, so there is no exact command to give. Open HarnessRouter/harnessrouter and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Harnessrouter does

HarnessRouter Community Edition: the self-hosted, Apache-2.0 edition of the unified interface for agent harnesses. Run Codex, Claude Code, Hermes, PI, DSH, and more through one API, with sessions, streaming, files, cancellation, and failure handling. Implements the Unified Harness Protocol (UHP), an open standard. Your keys, your infrastructure.

Alternatives in Development

Microsandbox — Open-source self-hosted MicroVM sandboxes with sub-200ms startup, hardware-level isolation via libkrun 5k ★
Agentic Stack — One brain, many harnesses 2.2k ★
Claude Code Unified Agents — A comprehensive collection of specialized Claude Code sub-agents combining the best features from multiple com 735 ★

README

Run agent harnesses on your own machine.

[![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](./LICENSE) [![Docker Pulls](https://img.shields.io/docker/pulls/harnessrouter/harnessrouter?logo=docker&logoColor=white)](https://hub.docker.com/r/harnessrouter/harnessrouter) [![Discord](https://img.shields.io/badge/Discord-join-5865F2?logo=discord&logoColor=white)](https://discord.gg/nPcbwqVPb2) [![X](https://img.shields.io/badge/Follow-%40HARNESSROUTER-000000?logo=x&logoColor=white)](https://x.com/HARNESSROUTER) [![UHP conformance](https://img.shields.io/badge/UHP-class%20Full-brightgreen)](protocol/conformance/)

**Run agent harnesses on your own machine.** One container, your own API keys, your own data. Configure a harness, give it work, watch it run, with no account, no cloud, and no telemetry. Community Edition implements the [Unified Harness Protocol (UHP)](https://unifiedharnessprotocol.org), the open standard the hosted service implements too.

[!TIP] New here? Start with [What it is](#what-it-is), or read the protocol at [unifiedharnessprotocol.org](https://unifiedharnessprotocol.org).

![The console after signing in: five built-in harnesses, ready to run](docs/images/02-first-screen-v2.png)

Install

Six steps, and at the end of them you have a running instance, a signed-in console, and an agent that has answered you.

You need Docker, about 4 GB of disk, and an API key from a model provider. There is no account to create and nothing to sign up for. The provider key is the only credential in the sto