Claude Code Harness icon

Claude Code Harness

Harness blueprint skill for turning vague agent ideas into concrete designs for request assembly, control loops, memory, permissions, recovery, and extension planes.

yuanhong-yu/claude-code-harness · v0.1.0 · Development & Workflow

Yuanhong Yusafe

Trust Score

78

Security

95

Surfaces

1

What is Claude Code Harness?

Claude Code Harness is a published development & workflow plugin for AI coding agents in the claude-code ecosystem, developed by Yuanhong Yu and distributed through the HOL AI plugin registry. Harness blueprint skill for turning vague agent ideas into concrete designs for request assembly, control loops, memory, permissions, recovery, and extension planes.

Canonical slug
yuanhong-yu/claude-code-harness
Version
v0.1.0 · updated Sep 20, 2026

Trust & Reputation

HOL Trust Score
78

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
100pts
Maintenance
55pts
MCP Posture
100pts
Plugin Security
95pts
Provenance
70pts
Publisher Quality
75pts

Registry Snapshot

Publisher verification
No
Marketplace source
Unknown
Scanner
Broker fallback
Safety label
safe
Digest verified
Yes
1 bundled skill — copy or download SKILL.mdOpen skills

Trust & reputation

Trust & Reputation

HOL Trust Score
78

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
100pts
Maintenance
55pts
MCP Posture
100pts
Plugin Security
95pts
Provenance
70pts
Publisher Quality
75pts

Provenance

Plugin root
.
Source repo
https://github.com/dadwadw233/claude-code-harness
Source commit
9dfe1c027189…
Publisher verified
No
Owner verified
Not owner verified

Continuous scanner CI not detected

This plugin remains listed. Its overall trust score is reduced by 10% because security checks are not maintained in the source repository's CI.

Optional: maintain the scanner in the source repository's CI to receive the full trust score. Listing does not require that change.

Verified badge not detected

Add the HOL verified badge to the repository README to score +2% trust. Plugin owners can open that pull request from Guard Plugins.

Security Posture

safe
Safety label
95
Security score
0
High findings
Provider
registry-broker-fallback
Grade
A · safe
Version
Unknown
cisco-skill-scanner: unknown

Findings

lowoperational-securitysupply-chain.lockfile-missing

Repository snapshot does not include a lockfile.

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

Claude Code Harness — Frequently asked questions

What is Claude Code Harness?
Claude Code Harness is an AI plugin in the HOL registry. Harness blueprint skill for turning vague agent ideas into concrete designs for request assembly, control loops, memory, permissions, recovery, and extension planes.
How do I install Claude Code Harness?
Install Claude Code Harness in your harness: Codex — codex plugin marketplace add dadwadw233/claude-code-harness; Claude Code — /plugin marketplace add dadwadw233/claude-code-harness; Any agent — npx skills add dadwadw233/claude-code-harness. Full step-by-step guidance is on the HOL plugin page.
How do I install Claude Code Harness in Codex?
To install Claude Code Harness in Codex, start with codex plugin marketplace add dadwadw233/claude-code-harness. The complete step-by-step install guide for Codex is on the HOL plugin page.
How do I install Claude Code Harness in Claude Code?
To install Claude Code Harness in Claude Code, start with /plugin marketplace add dadwadw233/claude-code-harness. The complete step-by-step install guide for Claude Code is on the HOL plugin page.
Is Claude Code Harness free?
Pricing for Claude Code Harness is published on its HOL plugin page when the maker schedules a launch.
Who publishes Claude Code Harness?
Claude Code Harness is published by Yuanhong Yu and listed on HOL.
Is Claude Code Harness available now?
Claude Code Harness availability is listed on its HOL plugin page.

Install Guidance

Install in Claude Code

Install through the Claude Code plugin marketplace.

Claude Code plugin docs
  1. 1

    Add the marketplace

    Run this inside a Claude Code session.

    claude code
  2. 2

    Install the plugin

    Use the plugin name and the marketplace name shown by the previous command.

    claude code
  3. 3

    Scripted alternative

    Non-interactive equivalent for scripts and CI pipelines. Add --scope project to pin the install to one repository.

    shell

Plugin Manifest

{
  "name": "claude-code-harness",
  "version": "0.1.0",
  "description": "A harness blueprint skill inspired by Claude Code-class agent systems.",
  "author": {
    "name": "Yuanhong Yu",
    "email": "[email protected]",
    "url": "https://github.com/dadwadw233"
  },
  "homepage": "https://github.com/dadwadw233/claude-code-harness",
  "repository": "https://github.com/dadwadw233/claude-code-harness",
  "license": "MIT",
  "keywords": [
    "agent",
    "harness",
    "codex",
    "claude-code",
    "runtime",
    "architecture"
  ],
  "skills": "./",
  "interface": {
    "displayName": "Claude Code Harness",
    "developerName": "Yuanhong Yu",
    "type": "cli",
    "shortDescription": "Design real harnesses for agentic systems",
    "longDescription": "A plugin that helps developers design request assembly, execution loop, memory, permissions, recovery, and extension planes for useful agentic systems.",
    "category": "Productivity",
    "capabilities": [
      "Read",
      "Write"
    ],
    "websiteURL": "https://github.com/dadwadw233/claude-code-harness",
    "privacyPolicyURL": "https://github.com/dadwadw233/claude-code-harness",
    "termsOfServiceURL": "https://github.com/dadwadw233/claude-code-harness/blob/main/LICENSE",
    "defaultPrompt": [
      "Use Claude Code Harness to turn this agent idea into a harness blueprint.",
      "Use Claude Code Harness to design request assembly, tool runtime, memory, and recovery for this agent.",
      "Use Claude Code Harness to critique this agent architecture at the harness level."
    ],
    "brandColor": "#0B5FFF",
    "composerIcon": "./assets/icon.svg",
    "logo": "./assets/logo.svg",
    "screenshots": [
      "./assets/screenshot.svg"
    ]
  },
  "registryIndexVersion": 5
}

Marketplace Source

Repo URL
https://github.com/dadwadw233/claude-code-harness
Marketplace path
Unknown
Source path
plugins/dadwadw233/claude-code-harness
Install policy
AVAILABLE

Skills

1 SKILL.md file ship with this plugin. Preview, copy, or download each one, then install them with the Skills CLI.

Share
skills-cli
  • claude-code-harness

    skills/claude-code-harness/SKILL.md

    Design a real harness for an agentic system using Claude Code-inspired patterns. Use when the user needs a harness blueprint, request assembly design, execution loop, tool runtime, memory layering, permission model, transcript or recovery strategy, or wants to turn a vague agent idea into a harness-level architecture. Do not use for generic product brainstorming, simple prompt writing, or isolated code generation.

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

File Inventory

.claude-plugin/plugin.json

file

397 bytes

86fd94b4bd3cf9fb…

.codex-plugin/plugin.json

plugin-manifest

1,534 bytes

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assets/icon.svg

asset

1,140 bytes

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assets/logo.svg

asset

2,131 bytes

227e7d1f319bfc0f…

assets/screenshot.svg

asset

4,506 bytes

0f476aafa6634f06…

README.md

file

8,725 bytes

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SECURITY.md

file

900 bytes

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skills/claude-code-harness/agents/openai.yaml

skill

270 bytes

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skills/claude-code-harness/LICENSE.txt

skill

1,028 bytes

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skills/claude-code-harness/references/claude-code-derived-insights.md

skill

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skills/claude-code-harness/references/harness-blueprint-template.md

skill

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skills/claude-code-harness/references/harness-pattern-language.md

skill

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skills/claude-code-harness/references/harness-principles.md

skill

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skills/claude-code-harness/SKILL.md

skill

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