instruction-critic

instruction-critic is an agent for Claude Code from jhlee0409/omni-harness-kit. It costs 131 tokens per session (457 once invoked), scanned A, original, MIT.

An independent review of a multi-step instruction before work begins. It checks whether the request is clear, appropriately limited, aimed at the real problem, and grounded in the repository.

In plain words
What is it for?
Use it before carrying out a substantial coding request to decide whether to proceed, ask questions, or reject the task. It reviews only and does not plan or edit.
Why use it?
It helps avoid spending time on an ambiguous request, hidden extra work, a symptom instead of the underlying problem, or references to files and pull requests that do not exist or are already handled.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the harness-kit plugin — 18 skills, 28 agents, 2 hooks shipped together

Good fit Use it before carrying out a substantial coding request to decide whether to proceed, ask questions, or reject the task. It reviews only and does not plan or edit.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/jhlee0409/omni-harness-kit/instruction-critic
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/jhlee0409/omni-harness-kit

Made for: Claude Code.

Or install harness-kit, the plugin that ships this one along with the rest of its 18 skills, 28 agents, 2 hooks.

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 instruction-critic

README.md
[![agentmods](https://agentmods.dev/badge/agents/jhlee0409/omni-harness-kit/instruction-critic/github.svg)](https://agentmods.dev/agents/jhlee0409/omni-harness-kit/instruction-critic)
Your own site
<a href="https://agentmods.dev/agents/jhlee0409/omni-harness-kit/instruction-critic"><img src="https://agentmods.dev/badge/agents/jhlee0409/omni-harness-kit/instruction-critic/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.

agentmods 80×15 button for instruction-critic

Your own site · 80×15
<a href="https://agentmods.dev/agents/jhlee0409/omni-harness-kit/instruction-critic"><img src="https://agentmods.dev/badge/agents/jhlee0409/omni-harness-kit/instruction-critic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 131 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 457 The whole file, excluding the scripts and references it only reads on demand.
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.
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 $0.00131 $0.00457
Opus 5 $0.00066 $0.00229
Sonnet 5 $0.00026 $0.00091
Haiku 4.5 $0.00013 $0.00046

Measured 9d ago against content hash 54d885ccb69e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

instruction-critic 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 9d 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.

agents/instruction-critic.md · 36 lines

What it actually says

You are the instruction critic. Audit the incoming instruction BEFORE work starts, so effort isn't spent on an ambiguous, out-of-scope, or wrong-problem request.

Checks

  1. Ambiguity — is the ask concrete enough to act on, or are there ≥2 readings that lead to different work? Name them.
  2. Scope — is it bounded, or does it smuggle in unstated adjacent work?
  3. Real problem — is the stated task the actual problem, or a proxy / symptom? Would solving it as stated leave the underlying need unmet?
  4. Repo grounding — any mentioned PR# / file / field / branch: confirm it exists and isn't already done (grep / gh / git). A request premised on a non-existent or already-merged thing is REJECT / CLARIFY.

Output (BLUF)

  • Verdict: PROCEED / CLARIFY (list the questions) / REJECT (state why).
  • Findings: per check — concrete, with the conflicting readings or the missing / stale reference (file:line, PR#).
  • Fail-safe: when genuinely unsure, CLARIFY — never silently PROCEED on ambiguity.

Constraints

  • Do not plan or edit — audit the request only.
  • Cite real grounding (grep / gh); don't assume the mentioned thing exists.
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. 9d ago First seen · 36 lines · 131 tokens per session scan A 54d885ccb69e

Subscribe to this mod's changes

instruction-critic is an agent published in the GitHub repository jhlee0409/omni-harness-kit (2 stars, last pushed 1mo ago), licensed MIT. It adds 131 tokens to every session and 457 once invoked, about $0.0007 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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