Harness Init

Name: Harness Init
Author: Gizele1

Gizele1/harness-init·1 plugin

Bootstrap a new or existing repo so Claude Code and similar agents get AGENTS.md, boundary tests, CI, and maintenance scripts in one install.

Overview

harness-init is a plugin marketplace for the Build phase that scaffolds agent-ready repositories with AGENTS.md, boundary tests, CI pipelines, and GC scripts.

What is this marketplace?

Generates AGENTS.md aligned with OpenAI-style harness engineering
Scaffolds boundary tests to keep agents inside safe change surfaces
Adds CI pipeline templates for automated checks on agent-driven PRs
Includes GC/cleanup scripts for long-running agent sessions
Single harness-init plugin (v1.1.0) focused on architecture and scaffold

Compatible agents: Claude Code, Cursor, Codex, any compatible agent

Community signal: 44 GitHub stars.

What problem does it solve?

Agents churn through repos without shared rules, untested boundaries, or CI—so every session re-debates architecture and risks unsafe edits.

Who is it for?

Solo builders starting or hardening a codebase meant to be edited primarily by AI coding agents.

Skip if: Teams that only want a single feature skill with no repo scaffold, CI, or AGENTS.md workflow.

What do I get? / Deliverables

After install, the repo exposes clear agent instructions, automated boundary checks, and CI so coding agents can work inside a defined harness.

AGENTS.md and harness-oriented repo layout
Boundary test suite wired for agent change limits
CI pipeline and GC script stubs ready to customize

Plugins in this marketplace

1 plugin — install individually after you add the marketplace.

PluginVersion

Harness InitMakes a repo agent-ready: AGENTS.md, boundary tests, CI pipeline, GC scripts — based on OpenAI's harness engineering methodology1.1.0

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Journey fit

Primary fit

BuildAgent skills & templates

Harness setup is part of making the product buildable by agents, before day-to-day feature work scales. The plugin targets agent conventions, scaffold files, and repo guardrails—not application UI or business APIs.

How it compares

Repo harness scaffold marketplace, not an MCP server or a single integration skill.

Common Questions / FAQ

Who is Harness Init for?

Indie and solo developers who use Claude Code-style agents and want OpenAI-inspired harness engineering baked into the repository from day one.

When should I use Harness Init?

Use it when you are greenfielding an agent-native project or retrofitting AGENTS.md, boundary tests, and CI before agents make wide refactors.

How do I add Harness Init to my agent?

Add the Gizele1/Harness Init Claude plugin marketplace to your agent environment, run the Harness Init plugin against your repo root, then commit the generated scaffold and enable the CI templates it provides.