review-spec

review-spec is a skill for Claude Code from gtrabanco/agentic-workflow. It costs 77 tokens per session (1,858 once invoked), scanned A, original, MIT.

A read-only review step for checking the product portion of a designed specification before engineering planning starts.

In plain words
What is it for?
Use it to validate a specification's product checks and receive a pass, fail, or request-for-design verdict.
Why use it?
It finds gaps in the product requirements before they become architecture or implementation work.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: reads .claude/ paths; mentions subagents; mentions Claude Code.

Part of the agentic-workflow plugin — 38 skills shipped together

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 skills/gtrabanco/agentic-workflow/review-spec
Any agent
npx skills add gtrabanco/agentic-workflow --skill review-spec
Clone the repo
git clone --depth 1 https://github.com/gtrabanco/agentic-workflow

Made for: Claude Code.

Or install agentic-workflow, the plugin that ships this one along with the rest of its 38 skills.

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 review-spec

README.md
[![agentmods](https://agentmods.dev/badge/skills/gtrabanco/agentic-workflow/review-spec.svg)](https://agentmods.dev/skills/gtrabanco/agentic-workflow/review-spec)
Your own site
<a href="https://agentmods.dev/skills/gtrabanco/agentic-workflow/review-spec"><img src="https://agentmods.dev/badge/skills/gtrabanco/agentic-workflow/review-spec.svg" alt="Measured on agentmods" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,858 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 5.1 $0.00077 $0.01858
Opus 5 $0.00039 $0.00929
Sonnet 5 $0.00015 $0.00372
Haiku 4.5 $0.00008 $0.00186

Measured today against content hash ac66c147246f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

review-spec 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 today.

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.

packages/pi-agentic-workflow/skills/review-spec/SKILL.md · 146 lines

How it starts

The opening of the file, as written. The whole thing — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Review Spec

The Product gate. A designed SPEC's product half is reviewed here, by a context that did not write it, before any engineering planning exists. Findings and one verdict only — the repair belongs to design-feature.

Designed ≠ reviewed. `## Design status: designed` proves the author's own
closure check ran; this skill is what lets `plan-feature` trust the half.

Turn contract

Load and verify the canonical Turn contract (11 boxes) before ending every turn. This skill's additional boxes live only in OUTPUT.md. Missing reference → STOP. An about-to-end turn with an unchecked box is not done.

✓ Snapshot built from the exact bytes read at one revision (digest pasted)
✓ Every Product check of the selected stage row ticked or turned into a finding
✓ One verdict printed from the closed set, with the receipt block persisted —
  write-then-report (`pre-execution-review`'s `POLICY.md` §8)
✓ Zero writes to any reviewed artifact (`SPEC.md`, `decisions.md`, roadmap,
  `ACCEPTANCE.md`) — this skill edits nothing

When to use

  • design-feature finished a Product half and the roadmap row reads defined: /review-spec <NN-slug> — this is the mandatory hop before /plan-feature.
  • After a design-feature repair batch produced a new artifactRevisionId.
  • plan-feature refuses to plan without a current PASS from this skill; it redirects here rather than proceeding.
  • Not for engineering plans (review-plan), not for source diffs (review-change), not for merge gating (audit-pr).

What is under review

Only the Product half. The Engineering half must be empty or absent — a partially filled Engineering half is not a reason to skip this review, and this skill never reviews it. Fix units have no Product half and never enter this skill (plan-fix routes to review-plan).

Step 0 — Discover the project (always first)

Read the full file on GitHub · 146 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. today Changed ac66c147246f
  2. yesterday First seen · 146 lines · 77 tokens per session scan A 7798b51447cf

Subscribe to this mod's changes

review-spec is a skill published in the GitHub repository gtrabanco/agentic-workflow (20 stars, last pushed yesterday), licensed MIT. It adds 77 tokens to every session and 1,858 once invoked, about $0.0004 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 2026-09-04.

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