harness:code-craft

A code-review command for TypeScript and JavaScript source that uses an AI judgment checklist to assess readability and whether the code clearly expresses its purpose.

In plain words
What is it for?
Reviewing functions, methods, and classes in package source, then producing findings, examples, counts, and cost information.
Why use it?
It helps find quality problems that fixed rules and complexity checks may miss, such as code whose intent is hard to understand.

Command for Claude Code

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.

agentmods
npx agentmods add commands/intense-visions/harness-engineering/code-craft
Clone the repo
git clone --depth 1 https://github.com/Intense-Visions/harness-engineering

Made for: Claude Code.

Per session 150 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 586 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00150 $0.00586
Opus 5 $0.00075 $0.00293
Sonnet 5 $0.00030 $0.00117
Haiku 4.5 $0.00015 $0.00059

Measured 2d ago against content hash c4a4f87c1837, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

harness:code-craft 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 2d 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.

.claude-plugin/commands/code-craft.md · 40 lines

What it actually says

Phases:

  • discover: Walk packages/STAR/src/ recursively; exclude tests + build dirs
  • units: AST-driven extraction of substantive code units (functions, methods, classes); trivial units skipped
  • critique: LLM-rubric loop per (unit, rubric) filtered by unit kind, with conservative-confidence bias — 7 seed rubrics
  • report: Aggregate findings + rubric/exemplar catalog + cost telemetry + file/unit counts

<execution_context> @agents/skills/claude-code/code-craft/SKILL.md @agents/skills/claude-code/code-craft/skill.yaml </execution_context>

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. 2d ago First seen · 40 lines · 150 tokens per session scan A c4a4f87c1837

Subscribe to this mod's changes

harness:code-craft is a command published in the GitHub repository Intense-Visions/harness-engineering (19 stars, last pushed 2d ago), licensed MIT. It adds 150 tokens to every session and 586 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 2026-08-30.