prospec: Skill for Claude Code

.agents/skills/prospec-review/SKILL.md

prospec-review is a skill for Claude Code, Codex from benwu95/prospec. It costs 108 tokens per session (4,998 once invoked), scanned A, original, MIT.

An independent code-review workflow that checks an entire change and can feed confirmed serious problems into a fix-and-verify loop.

In plain words
What is it for?
Use it to inspect code changes, check them against specifications and dependency direction, automatically fix confirmed critical issues, and report major issues for later verification.
Why use it?
It provides a fresh review of the change and prevents critical findings from being silently ignored before verification.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents; installed under .agents/ (shared by several agents).

This is benwu95/prospec's own configuration. It tells Claude Code and Codex how to work on prospec itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything prospec configures →

Reuse

Borrowing it

Nothing to install: this file belongs to benwu95/prospec. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/benwu95/prospec/main/.agents/skills/prospec-review/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/benwu95/prospec

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 prospec-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/benwu95/prospec/prospec-review/github.svg)](https://agentmods.dev/skills/benwu95/prospec/prospec-review)
Your own site
<a href="https://agentmods.dev/skills/benwu95/prospec/prospec-review"><img src="https://agentmods.dev/badge/skills/benwu95/prospec/prospec-review/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 prospec-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/benwu95/prospec/prospec-review"><img src="https://agentmods.dev/badge/skills/benwu95/prospec/prospec-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 108 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,998 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 $0.00108 $0.04998
Opus 5.5 $0.00043 $0.01999
Sonnet 5.5 $0.00022 $0.01000
Haiku 4.5 $0.00011 $0.00500

Measured 3d ago against content hash 89c1581b70e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

prospec-review 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 3d 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.

.agents/skills/prospec-review/SKILL.md · 195 lines

How it starts

The opening of the file, as written. The whole thing — 195 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Prospec Review Skill

Activation

When triggered, briefly describe:

  • That an independent reviewer (fresh context) will audit the entire change diff between implement and verify
  • That only verifier-confirmed criticals are auto-fixed; majors are proposed and passed to verify as WARN
  • That the loop converges to zero unresolved critical or escalates to you at a hard cap — review never silently passes

CLI Prerequisite (required)

The prospec CLI is a required file for this skill — its deterministic steps call prospec commands. Probe BEFORE any other step; there is no manual fallback.

  1. Run prospec --version (Bash).
  2. Command not found / not executable → STOP. Ask the user to install the prospec standalone executable — the one-click installer script from the project README (macOS/Linux install.sh, Windows install.ps1) or a release binary from GitHub Releases; prospec is NOT published to npm. Then re-run this skill.
  3. Version older than 2.10.0 → STOP. Report the installed vs required version and ask the user to upgrade, then re-run this skill.

Hand-executing a CLI-owned mutation is NEVER the fallback — that re-introduces the nondeterministic serialization this contract exists to remove.

Evidence uses snapshot-v2 / repository-inputs-v2: working-tree content of git index members. Unchanged members and effective content preserve evidence across staging and equivalent commits. Revalidate legacy records once.

Startup Loading

  1. [STABLE] Run prospec constitution show --station review (Bash)
  2. [STABLE] MANDATORY — Read references/review-format.md for the severity contract, review.md format, and reviewer lenses
  3. [DYNAMIC] Read .prospec/changes/[name]/tasks.md, plan.md, delta-spec.md, proposal.md — the contract this change must honour
  4. [DYNAMIC] Read prospec/ai-knowledge/_conventions.md + each affected module README.md — patterns and ripple effects
  5. [DYNAMIC] Compute the change diff relative to the branch base (git diff), reviewing source + tests; exclude generated artifacts (dist/, lockfiles, deployed skills)

Read the full file on GitHub · 195 lines

Files

What ships with it

6 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. 3d ago Changed · +2 lines 89c1581b70e4
  2. 4d ago Changed · +2 lines 899d5e82e926
  3. 9d ago Changed 4991de7bf454
  4. 12d ago Changed ed555abb8dc1
  5. 13d ago Changed 29419358a34d
  6. 16d ago Changed cc72878aaec6
  7. 17d ago Changed aecaecc2a369
  8. 20d ago Changed 5b1601a3e51a
  9. 23d ago Changed d8ca678fc0fa
  10. 25d ago First seen · 191 lines · 108 tokens per session scan A b7142feb8b79

Subscribe to this mod's changes

prospec-review is a skill published in the GitHub repository benwu95/prospec (6 stars, last pushed yesterday), licensed MIT. It adds 108 tokens to every session and 4,998 once invoked, about $0.0004 per session on Opus 5.5. 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.

Related

prospec-review compared with skills from other repositories

prospec-review next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
prospec-reviewbenwu95/prospecSkill6yesterdayMITA108Claude Code, Codex
ospec-goalclawplays/ospecSkill3902mo agoMITA29Codex
ospecclawplays/ospecSkill3902mo agoMITA26Claude Code, Codex
ospec-changeclawplays/ospecSkill3902mo agoMITA18Codex
review-spdzhu1090093659/spec_driven_developSkill9933mo agoMITA72Claude Code
code-reviewdanweinerdev/claude-sdd-plannerSkill21mo agoMITA38Claude Code
sdd-code-reviewdanweinerdev/claude-sdd-plannerSkill21mo agoMITA28Claude Code