review-plan

review-plan is a skill for Claude Code, Codex from paultyng/skill-issue. It costs 111 tokens per session (2,772 once invoked), scanned A, original, MIT.

A process for checking an implementation plan before work begins. It evaluates whether the plan is feasible using the repository as context.

In plain words
What is it for?
Use it with a plan file to receive a READY, NEEDS_REVISION, or BLOCKED verdict and prioritized findings.
Why use it?
It can reveal missing steps, unclear assumptions, or blockers before they lead to wasted implementation work.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths; mentions CLAUDE.md.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is | P2 | verification | Task 7 has no verification step | Add `task test ./internal/queue/...` with expected pass | PLAN.md:71 |.

Good fit Use it with a plan file to receive a READY, NEEDS_REVISION, or BLOCKED verdict and prioritized findings.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/paultyng/skill-issue
agentmods
npx agentmods add skills/paultyng/skill-issue/review-plan

Made for: Claude Code, Codex.

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-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/paultyng/skill-issue/review-plan.svg)](https://agentmods.dev/skills/paultyng/skill-issue/review-plan)
Your own site
<a href="https://agentmods.dev/skills/paultyng/skill-issue/review-plan"><img src="https://agentmods.dev/badge/skills/paultyng/skill-issue/review-plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 111 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,772 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 $0.00111 $0.02772
Opus 5 $0.00056 $0.01386
Sonnet 5 $0.00022 $0.00554
Haiku 4.5 $0.00011 $0.00277

Measured 8d ago against content hash 23692be7e9ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

review-plan 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 8d 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.

skills/review-plan/SKILL.md · 217 lines

How it starts

The opening of the file, as written. The whole thing — 217 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan Review

Pre-flight review of an implementation plan markdown file. Produces a verdict (READY / NEEDS_REVISION / BLOCKED) and a prioritized findings table. Used standalone and as a pre-execution gate by implement-plan.

This is a document review, not a code review. No static analyzers. No diff scoping. The plan is treated as the artifact under test; the codebase is read-only context for feasibility checks.

Workflow

1. Resolve the plan file

Priority order:

  1. Explicit path from the invocation (e.g. /review-plan .plans/auth-rewrite.md).
  2. ./.plans/PLAN.md in the current working directory.
  3. Latest by mtime in ./.plans/*.md (typically YYYY-MM-DD-<feature>.md per convention).
  4. Legacy fallback (one-release transition): ./PLAN.md, then latest by mtime in ./docs/plans/*.md. If either resolves, warn once: Plan resolved from legacy path <X>; consider moving under .plans/.

If none resolve, stop and ask the user for a path. Do not guess.

CLAUDE.md override: if the project CLAUDE.md (or CLAUDE.local.md) contains a Plans live in <path> directive, use <path> as the primary discovery dir instead of .plans/.

2. Load context

  • Read the resolved plan file fully.
  • Read any docs the plan references inline (./REVIEW.md, ./CLAUDE.md, design docs cited).
  • For each file path mentioned in the plan, confirm the file exists (or is named as new in the plan). Missing files referenced as "edit" targets are a feasibility issue.
  • If the plan references prior work in commits or PRs, capture branch + base ref for the run metadata header.

Do not read the entire codebase. Read only what the plan references plus enough to verify the named files exist.

3. Apply the plan-shape contract

The plan must satisfy these structural rules. Any violation contributes to NEEDS_REVISION or BLOCKED per the verdict rules.

Where a task states a requirement level, it SHOULD use RFC 2119 key words (MUST / SHOULD / MAY) so mandatory and optional steps are unambiguous (see the normative-language rule).

Read the full file on GitHub · 217 lines

Files

What ships with it

1 file 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. 8d ago First seen · 217 lines · 111 tokens per session scan A 23692be7e9ad

Subscribe to this mod's changes

review-plan is a skill published in the GitHub repository paultyng/skill-issue (9 stars, last pushed 27d ago), licensed MIT. It adds 111 tokens to every session and 2,772 once invoked, about $0.0006 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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