0xSero

Harness Bridge — Design skill for Claude Code

Design community

Point any coding harness (Claude Code, Codex, OpenCode, Pi, OMP, Crush, Copilot, Grok…) at any OpenAI/Anthropic/Responses-compatible inference endpoint.

How to install Harness Bridge

This entry records only its repository, not the path inside it, so there is no exact command to give. Open 0xSero/harness-bridge and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Harness Bridge does

Point any coding harness (Claude Code, Codex, OpenCode, Pi, OMP, Crush, Copilot, Grok…) at any OpenAI/Anthropic/Responses-compatible inference endpoint. Core library + CLI + macOS tray + web UI.

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README

Local AI

Point any coding harness — Claude Code, Codex, OpenCode, Pi, OMP, Crush, Copilot, Grok — at any OpenAI-, Anthropic- or Responses-compatible inference endpoint. Pick a model from what the endpoint actually serves, click a harness, and it opens already talking to that model.

Nothing you own is edited. Your `~/.claude.json`, `~/.codex/config.toml` and `~/.config/opencode` are untouched: the endpoint, key and model travel in the launch environment, and the only setting the tool persists is its own selection.

Four packages, one core:

Package	What it is
`packages/core`	providers, model discovery, launch plans, sessions
`packages/cli`	the `harness-bridge` / `hbr` executables
`packages/tray`	Local AI — the macOS menu bar app
`packages/web`	a browser UI on `127.0.0.1`

Everything else is a thin shell over the core; each shell issues the same commands you would type.

Quick start

Requires [Bun](https://bun.sh) ≥ 1.1; the menu bar app needs macOS with Xcode command line tools.

git clone https://github.com/0xSero/harness-bridge && cd harness-bridge
bun install
cd packages/cli && bun link      # puts `harness-bridge` and `hbr` on your PATH

# 1. name an endpoint
harness-bridge providers add --name HomeLab --url http://host:8080/v1 --key sk-…

# 2. see what it actually serves, and pick
harness-bridge models
harness-bridge use deepseek-v4.1-flash

# 3. open a harness on it
harness-bridge run claude

The key is written to `~/.config/harness-bridge/config.json`, mode `0600`. It is never passed on a command line, never logged, and never committed. A session never contains it either — see [Sessions](#sessions).