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agent-harness-skills

v0.2.0

Reusable skills for building agent-ready repository harnesses.

Codex5 Skills

By Agent Harness Skills contributorsLicense: MIT1.1k GitHub starsUpdated 2 days ago

Directory evidence

Runtimes
Codex
Parsed components
5 skill or MCP entries
Source updated
Sep 22, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install agent-harness-skills for Codex

Installs for the current user
codex plugin marketplace add hashgraph-online/awesome-codex-plugins
codex plugin marketplace upgrade awesome-codex-plugins
codex plugin add agent-harness-skills@awesome-codex-plugins

Paste and run these commands in a terminal with Codex. They add and refresh the awesome-codex-plugins catalog, then install this plugin.

Compatibility: the page URL and API slug “agent-harness-skills” remain stable.

  • Codex: agent-harness-skills@agent-plugin-marketplace → agent-harness-skills@awesome-codex-plugins

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/hashgraph-online/awesome-codex-plugins

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/yfge/agent-harness-skills/.

Plugin files

plugins/yfge/agent-harness-skills/
├── .codex-plugin/plugin.json
├── skills/repo-contracts-and-boundaries/SKILL.md
├── skills/repo-harness-assessment/SKILL.md
├── skills/runtime-evidence-and-tracing/SKILL.md
├── skills/validation-harness-design/SKILL.md
└── skills/work-state-and-delivery/SKILL.md

Included Skills5

repo-contracts-and-boundariesskills/repo-contracts-and-boundaries/SKILL.md

Use when turning architecture, layering, ownership, dependency direction, schemas, structural metrics, quality thresholds, baselines, allowlists, or generated quality snapshots into repository checks.

repo-harness-assessmentskills/repo-harness-assessment/SKILL.md

Use when evaluating repository agent-readiness, mapping harness roles, choosing the next smallest improvement, or designing and reconciling agent entrypoints such as AGENTS.md, CLAUDE.md, GEMINI.md, Cursor rules, or GitHub instructions.

runtime-evidence-and-tracingskills/runtime-evidence-and-tracing/SKILL.md

Use when connecting observed behavior, logs, metrics, request IDs, run IDs, screenshots, traces, external dependency results, or artifacts into a runtime evidence loop.

validation-harness-designskills/validation-harness-design/SKILL.md

Use when designing repository validation commands, doctor scripts, test matrices, JSON or JUnit outputs, CI gates, smoke checks, or harness command surfaces.

work-state-and-deliveryskills/work-state-and-delivery/SKILL.md

Use when designing or reconciling design docs, task boards, external trackers, execution plans, delivery records, handoffs, review evidence, task-to-change traceability, or repository commit-coupling policy.

Plugin manifests1

plugins/yfge/agent-harness-skills/.codex-plugin/plugin.json
{
  "id": "agent-harness-skills",
  "name": "agent-harness-skills",
  "version": "0.2.0",
  "description": "Reusable skills for building agent-ready repository harnesses.",
  "author": {
    "name": "Agent Harness Skills contributors"
  },
  "homepage": "https://github.com/yfge/agent-harness-skills",
  "repository": "https://github.com/yfge/agent-harness-skills",
  "license": "MIT",
  "skills": "./skills/",
  "interface": {
    "displayName": "Agent Harness Skills",
    "shortDescription": "Repo harness practices for agent-ready engineering work",
    "longDescription": "Use Agent Harness Skills as a compact methodology plugin to assess and design repository harnesses: entrypoint and role mapping, mechanical contracts, structural quality, validation surfaces, runtime evidence, and optional work-state and delivery governance.",
    "developerName": "Agent Harness Skills contributors",
    "category": "Coding",
    "websiteURL": "https://github.com/yfge/agent-harness-skills",
    "brandColor": "#2F6FED",
    "composerIcon": "./assets/icon.svg",
    "capabilities": [
      "Interactive",
      "Read",
      "Write"
    ],
    "defaultPrompt": "Assess this repository's agent harness maturity."
  },
  "keywords": [
    "agent-harness",
    "skills",
    "repository",
    "validation",
    "codex-plugin",
    "methodology",
    "templates",
    "runtime-evidence",
    "delivery"
  ]
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[agent-harness-skills on Agent Plugins Marketplace](https://pluginsmp.com/plugins/agent-harness-skills)