What is agent-harness-extras?

A package of less frequently used skills for an agent harness, meaning the tools and instructions that support an agent while it works.

Use it when you need the included code-tour, audit, loop, manager, persona-review, reorganization, worker-setup, or brain-ingest skills.

It keeps specialized skills separate from the core package, reducing the amount of rarely needed guidance loaded by default.

agent-harness-extras — Plugin for Claude Code by joymin5655/Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/joymin5655/Agent

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/joymin5655/agent/extras/github.svg)](https://agentmods.dev/plugins/joymin5655/agent/extras)

Your own site

<a href="https://agentmods.dev/plugins/joymin5655/agent/extras"><img src="https://agentmods.dev/badge/plugins/joymin5655/agent/extras/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/joymin5655/agent/extras"><img src="https://agentmods.dev/badge/plugins/joymin5655/agent/extras.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 10 skills, 1 agent cost 1,160 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

agent-harness-extras scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

extras/.claude-plugin/plugin.json · 14 lines

What it actually says

{
  "name": "agent-harness-extras",
  "description": "Rarely used agent-harness skills split out of the core plugin to keep its always-on context small: code-tour, harness-audit, harness-loop, loop, manager-audit, persona-review, reorg-sync, worker-setup, brain-ingest, writing-critique. Install alongside agent-harness.",
  "version": "0.13.8",
  "author": {
    "name": "joymin",
    "url": "https://github.com/joymin5655"
  },
  "homepage": "https://github.com/joymin5655/Agent",
  "repository": "https://github.com/joymin5655/Agent",
  "license": "MIT",
  "keywords": ["agents", "harness", "audit", "loop", "persona-review", "ai-agnostic", "claude-code"]
}

Contents

What it installs

The manifest is a name and a version. 10 skills, 1 agent travel with it, and installing the plugin installs all of them — 1,160 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

5d ago Changed 9ad989051245
6d ago Changed 55405093a044
8d ago Changed f54ab721e3f2
9d ago Changed 227cc8a1a4d5
10d ago Changed a0b7519d6a7b
14d ago Changed 437b4ddf616d
16d ago First seen · 14 lines scan A 161b7ca0988d

Subscribe to this mod's changes

agent-harness-extras is a plugin published in the GitHub repository joymin5655/Agent (2 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-21.

Building agents Claude Code LLM agent-infrastructure ai-agents devtools policy-as-code

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