harness-workflow: Skill for Claude Code

.cursor/skills/agent-instructions-maintainer/SKILL.md

agent-instructions-maintainer is a skill for Claude Code, Cursor from YSAA1/harness-workflow. It costs 62 tokens per session (1,910 once invoked), scanned A, original, no licence file.

A maintenance skill for checking and repairing instruction files that guide coding agents, such as AGENTS.md, CLAUDE.md, and Cursor rules.

In plain words
What is it for?
Use it to audit or repair the project’s durable agent rules and instruction files.
Why use it?
It helps keep agent instructions accurate and consistent when they have become outdated or damaged.

Skill for Claude CodeCursor

Written for Claude Code and Cursor: shipped in a Claude Code plugin, but also installed under .cursor/.

This is YSAA1/harness-workflow's own configuration. It tells Claude Code and Cursor how to work on harness-workflow itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything harness-workflow configures →

Part of the harness-workflow plugin — 12 skills shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to YSAA1/harness-workflow. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/YSAA1/harness-workflow/master/.cursor/skills/agent-instructions-maintainer/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/YSAA1/harness-workflow

Made for: Claude Code, Cursor.

Or install harness-workflow, the plugin that ships this one along with the rest of its 12 skills.

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.

agentmods badge for agent-instructions-maintainer

README.md
[![agentmods](https://agentmods.dev/badge/skills/ysaa1/harness-workflow/agent-instructions-maintainer.svg)](https://agentmods.dev/skills/ysaa1/harness-workflow/agent-instructions-maintainer)
Your own site
<a href="https://agentmods.dev/skills/ysaa1/harness-workflow/agent-instructions-maintainer"><img src="https://agentmods.dev/badge/skills/ysaa1/harness-workflow/agent-instructions-maintainer.svg" alt="Measured on agentmods" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,910 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00062 $0.01910
Opus 5 $0.00031 $0.00955
Sonnet 5 $0.00012 $0.00382
Haiku 4.5 $0.00006 $0.00191

Measured 6d ago against content hash 0129251ee8ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

agent-instructions-maintainer 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 6d 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.

.cursor/skills/agent-instructions-maintainer/SKILL.md · 199 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

  1. 6d ago First seen · 199 lines · 62 tokens per session scan A 0129251ee8ee

Subscribe to this mod's changes

agent-instructions-maintainer is a skill published in the GitHub repository YSAA1/harness-workflow (2 stars, last pushed 24d ago), with no licence file. It adds 62 tokens to every session and 1,910 once invoked, about $0.0003 per session on Opus 5. 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 2026-08-31.

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