What is harness-code-reviewer?

A code-review assistant that checks completed changes, analyzes their design and dependencies, and returns a structured list of strengths and issues.

Use it to review finished code, investigate review findings, and respond to feedback from a code review.

It helps find important correctness and design problems before changes are accepted, while reducing duplicated or purely stylistic feedback.

harness-code-reviewer — Agent for Claude Code by Intense-Visions

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/Intense-Visions/harness-engineering

Made for: Claude Code.

Or install harness-claude, the plugin that ships this one along with the rest of its 85 skills, 91 commands, 16 agents, 4 hooks, 4 MCP servers.

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/agents/intense-visions/harness-engineering/harness-code-reviewer/github.svg)](https://agentmods.dev/agents/intense-visions/harness-engineering/harness-code-reviewer)

Your own site

<a href="https://agentmods.dev/agents/intense-visions/harness-engineering/harness-code-reviewer"><img src="https://agentmods.dev/badge/agents/intense-visions/harness-engineering/harness-code-reviewer/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/agents/intense-visions/harness-engineering/harness-code-reviewer"><img src="https://agentmods.dev/badge/agents/intense-visions/harness-engineering/harness-code-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 45 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 10,444 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 89% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00045	$0.10444
Opus 5.5	$0.00018	$0.04178
Sonnet 5.5	$0.00009	$0.02089
Haiku 4.5	$0.00005	$0.01044

Measured 2mo ago against content hash 8a92d04394d2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

harness-code-reviewer 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 2mo 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.

Origin

This is a copy

89% identical to harness-adversarial-reviewer — 15 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.antigravity-extension/agents/harness-code-reviewer.md · 877 lines

How it starts

The opening of the file, as written. The whole thing — 877 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role

Perform AI-powered code review incorporating harness validation, architectural analysis, and project-specific calibration. Produces structured Strengths/Issues/Assessment output.

Skills

harness-code-review

Steps

Run harness validate (always)
Run harness check-deps (always)
Run harness check-docs (on_pr)
Run harness check-perf (on_pr)
Execute harness-code-review skill (on_pr)
Execute harness-code-review skill (manual)

Methodology

Harness Code Review

Multi-phase code review pipeline — mechanical checks, graph-scoped context, parallel review agents, cross-agent deduplication, and structured output with technical rigor over social performance.

When to Use

When performing a code review (manual invocation or triggered by on_pr / on_review)
When requesting a review of completed work (see Role A at the end of this document)
When responding to review feedback (see Role C at the end of this document)
NOT for in-progress work (complete the feature first)
NOT for rubber-stamping (if you cannot find issues, look harder or state confidence level)
NOT for style-only feedback (leave that to linters and mechanical checks)

Argument Resolution

When invoked by autopilot (or with explicit arguments), resolve paths before starting:

Session slug: If session-slug argument provided, set {sessionDir} = .harness/sessions/<session-slug>/. Pass to gather_context({ session: "<session-slug>" }). All handoff writes go to {sessionDir}/handoff.json.
Commit range: If commit-range argument provided (e.g., abc123..HEAD), use as diff scope in Phase 2 MECHANICAL and Phase 7 OUTPUT. Otherwise, auto-detect from git environment.

When no arguments are provided (standalone invocation), session slug is unknown — omit from gather_context, fall back to global .harness/ paths. Diff scope auto-detected.

Process

Iron Law

Read the full file on GitHub · 877 lines

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.

2mo ago First seen · 877 lines · 45 tokens per session scan A 8a92d04394d2

Subscribe to this mod's changes

harness-code-reviewer is an agent published in the GitHub repository Intense-Visions/harness-engineering (23 stars, last pushed 3d ago), licensed MIT. It adds 45 tokens to every session and 10,444 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 89% identical to harness-adversarial-reviewer, differing in 15 lines, and is treated as a copy.

Code review

harness-code-reviewer next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
harness-code-reviewerIntense-Visions/harness-engineering	Agent	23	3d ago	MIT	A	45	Claude Code
cpp-revieweraffaan-m/ECC	Agent	298k	4d ago	MIT	A	41	Claude Code, Kiro
thermo-nuclear-code-quality-review-subagentmichael-denyer/pstack-claude	Agent	4.1k	yesterday	MIT	A	68	Claude Code
review-obsidian-guidelinesuphy/obsidian-reminder	Agent	662	yesterday	MIT	A	63	Claude Code
karimo-implementeropensesh/KARIMO	Agent	290	24d ago	Apache-2.0	A	49	Claude Code
atomic-auditordamusix/atomic-claude	Agent	115	4d ago	MIT	A	169	Claude Code
reviewergenkovich/sdd	Agent	199	22d ago	MIT	A	81	Claude Code