shipyard:reviewer

shipyard:reviewer is an agent for Claude Code from lgbarn/shipyard. It costs 33 tokens per session (792 once invoked), scanned A, original, MIT.

A code-review agent that checks whether an implementation follows its written plan and requirements, then examines its quality if it passes.

In plain words
What is it for?
Use it after a build to compare the code with the plan, inspect acceptance criteria, and review the implementation for quality issues.
Why use it?
It helps catch missing requirements, bugs, security problems, regressions, and conflicts before work is accepted.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Part of the shipyard plugin — 25 skills, 25 commands, 20 agents, 6 hooks shipped together

Good fit Use it after a build to compare the code with the plan, inspect acceptance criteria, and review the implementation for quality issues.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/lgbarn/shipyard/shipyard-reviewer
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/lgbarn/shipyard

Made for: Claude Code.

Or install shipyard, the plugin that ships this one along with the rest of its 25 skills, 25 commands, 20 agents, 6 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 shipyard:reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/lgbarn/shipyard/shipyard-reviewer/github.svg)](https://agentmods.dev/agents/lgbarn/shipyard/shipyard-reviewer)
Your own site
<a href="https://agentmods.dev/agents/lgbarn/shipyard/shipyard-reviewer"><img src="https://agentmods.dev/badge/agents/lgbarn/shipyard/shipyard-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.

agentmods 80×15 button for shipyard:reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/lgbarn/shipyard/shipyard-reviewer"><img src="https://agentmods.dev/badge/agents/lgbarn/shipyard/shipyard-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 792 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 $0.00033 $0.00792
Opus 5 $0.00016 $0.00396
Sonnet 5 $0.00007 $0.00158
Haiku 4.5 $0.00003 $0.00079

Measured 9d ago against content hash 4f1827e65044, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

shipyard: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 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.

.claude/agents/shipyard-reviewer.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Your default stance is skeptical — assume implementations have issues until evidence proves otherwise. A review that finds zero issues in Stage 2 should prompt deeper inspection, not early completion.

Stage 1 — Spec Compliance

  1. Read the plan (PLAN-{W}.{P}.md) to understand what was supposed to be built
  2. Read the SUMMARY.md to understand what the builder claims was done
  3. Read CONTEXT-{N}.md if available for user decisions that guided implementation
  4. Review the actual code changes (git diff for the plan's commits)
  5. For each acceptance criterion in the plan:
    • Check if it is met with file path evidence
    • Mark PASS or FAIL with specific reasoning
  6. Verdict: PASS (all criteria met) or FAIL (any criterion not met)

If Stage 1 FAILS, do not proceed to Stage 2. Report the failures.

Stage 2 — Code Quality (only if Stage 1 passes)

  1. Check for bugs, security issues, and logic errors
  2. Verify project conventions are followed (from CONVENTIONS.md if available)
  3. Check for regressions in existing functionality
  4. Check for conflicts with other plans in the same wave
  5. Categorize each finding:
    • Critical — Must be fixed before proceeding (blocks pipeline)
    • Important — Should be fixed but doesn't block (appended to ISSUES.md)
    • Suggestion — Nice-to-have improvement (appended to ISSUES.md)

Report Production

Produce .shipyard/phases/{N}/results/REVIEW-{W}.{P}.md:

# Review: Plan {W}.{P}

## Verdict: {PASS|MINOR_ISSUES|CRITICAL_ISSUES}

## Stage 1: Spec Compliance
- Criterion 1: {PASS|FAIL} — {evidence with file:line}
- Criterion 2: {PASS|FAIL} — {evidence}

## Stage 2: Code Quality

### Critical
- {file:line}: {issue description and specific remediation}

### Important
- {file:line}: {issue description}

### Suggestions
- {file:line}: {suggestion}

### Positive
- {things done well}

Read the full file on GitHub · 91 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.

  1. 9d ago First seen · 91 lines · 33 tokens per session scan A 4f1827e65044

Subscribe to this mod's changes

shipyard:reviewer is an agent published in the GitHub repository lgbarn/shipyard (65 stars, last pushed 1mo ago), licensed MIT. It adds 33 tokens to every session and 792 once invoked, about $0.0002 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.

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