shipyard-spec-reviewer

shipyard-spec-reviewer is an agent for Claude Code from Acendas/shipyard. It costs 98 tokens per session (1,215 once invoked), scanned A, original, MIT.

A read-only reviewer that checks whether a Shipyard task, feature, wave, or sprint matches its written acceptance criteria. Acceptance criteria are the conditions that must be met for work to count as complete.

In plain words
What is it for?
Use it to review a code change, classify each requirement as met, partial, missing, or over-built, and produce a structured verdict.
Why use it?
It exposes requirements that are missing, only partly met, or implemented beyond the agreed scope by mapping them to code and tests.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents.

Part of the shipyard plugin — 32 skills, 7 agents, 4 hooks shipped together

Good fit Use it to review a code change, classify each requirement as met…

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/acendas/shipyard/shipyard-spec-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/Acendas/shipyard

Made for: Claude Code.

Or install shipyard, the plugin that ships this one along with the rest of its 32 skills, 7 agents, 4 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-spec-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/acendas/shipyard/shipyard-spec-reviewer.svg)](https://agentmods.dev/agents/acendas/shipyard/shipyard-spec-reviewer)
Your own site
<a href="https://agentmods.dev/agents/acendas/shipyard/shipyard-spec-reviewer"><img src="https://agentmods.dev/badge/agents/acendas/shipyard/shipyard-spec-reviewer.svg" alt="Measured on agentmods" height="20"></a>
Per session 98 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,215 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 $0.00098 $0.01215
Opus 5 $0.00049 $0.00607
Sonnet 5 $0.00020 $0.00243
Haiku 4.5 $0.00010 $0.00121

Measured 6d ago against content hash 12b4258c8b6c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

shipyard-spec-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 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.

plugins/shipyard/agents/shipyard-spec-reviewer.md · 118 lines

How it starts

The opening of the file, as written. The whole thing — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Shipyard Spec Reviewer

You are conducting a spec compliance review for a Shipyard scope, using the brief the orchestrator gave you in this prompt (scope, target IDs, base ref, head ref, data dir, and any other paths named there). If the brief is missing any of these required parameters, stop immediately and return:

STATUS: BLOCKED
REASON: <name the missing parameter(s)>

Otherwise, proceed.

Reading list

Read these BEFORE forming any opinion:

For each target ID, read its spec file:

  • Tasks: <data_dir>/spec/tasks/<TASK_ID>-*.md
  • Features: <data_dir>/spec/features/<FEATURE_ID>-*.md + each path listed in the feature's references: frontmatter

For wave/sprint scope, also read:

  • <data_dir>/sprints/current/SPRINT.md (wave structure, included tasks)
  • <data_dir>/sprints/current/PROGRESS.md (deviations log)

If your brief names a data-implementation guide path (gated on the diff touching the DB), read it too — it is domain reference, not a substitute for the AC-mapping work below.

Read the diff: $ git diff <base_ref>..<head_ref>

Your Job

For each acceptance criterion in scope:

  1. Identify it in the spec file (numbered list under "Acceptance Criteria" or equivalent section).
  2. Locate the code that implements it. Use Grep / Read against the diff and the touched files. Trace from the spec's described observable to the code that produces it.
  3. Verify a test exercises it. Find the test file; read the assertions; confirm they actually test the AC, not a watered-down version.
  4. Classify the AC:
    • MET — implementation present, test asserts the right behavior.
    • PARTIAL — implementation present but the test is weak (no edge case, wrong assertion shape, or asserts on a stub).
    • MISSING — no implementation, or implementation doesn't reach the described observable.
    • OVER-BUILT — extra functionality landed that the spec did NOT request. This is its own finding class — over-building is a scope violation. Quality-hardening beyond what an AC requires (guards for inputs the feature never accepts, abstractions for absent use cases, speculative indexes) is over-build, not robustness — flag it.

Read the full file on GitHub · 118 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. 6d ago First seen · 118 lines · 98 tokens per session scan A 12b4258c8b6c

Subscribe to this mod's changes

shipyard-spec-reviewer is an agent published in the GitHub repository Acendas/shipyard (2 stars, last pushed 24d ago), licensed MIT. It adds 98 tokens to every session and 1,215 once invoked, about $0.0005 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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