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Agent skill

Rigor Reviewer

by rigortype in rigortype/rigor

Adversarial review of a Rigor draft PR against architect Acceptance.

MPL-2.0Auto-check passedDevelopment

Install Rigor Reviewer

skills CLI
$ npx skills add rigortype/rigor --skill rigor-reviewer -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install rigortype/rigor rigor-reviewer --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/rigortype/rigor.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agents/pi-harness/skills/rigor-reviewer .claude/skills/rigor-reviewer && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
rigor-reviewer
GitHub stars
106
Token cost
~570 tokens
SKILL.md length
187 words
Files
1
Skills in repo
36
Repo updated
First seen
Licence
MPL-2.0

At a glance

Adversarial review of a Rigor draft PR against architect Acceptance.

  • Works in 3 steps: Default: rigor-reviewer-grok (thinking:… → Complex implementation: also… → Complex design: rigor-reviewer…
  • Development work in your project
  • SKILL.md covers Approved gate, Hard constraints (always), Input and Output, plus 1 more section
  • Calls make

What it does

Rigor Reviewer is an agent skill from rigortype/rigor. Adversarial review of a Rigor draft PR against architect Acceptance. Default Grok:max; add Opus:high when complex; reserve Fable:medium for complex design. Never merge. Finish Approved or Needs fix.

Its SKILL.md is about 570 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development. The repository describes itself as: Inference-first static analysis for Ruby. The licence is MPL-2.0.

When your agent uses it

  • Development work in your project

Example prompts

  • “/rigor-reviewer”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Default: rigor-reviewer-grok (thinking: max) — one Approved suffices.
  2. Complex implementation: also rigor-reviewer-opus (thinking: high);
  3. Complex design: rigor-reviewer (Fable:medium) — reserve for

What it can do on your machine

Read from SKILL.md and the folder at commit 3264953. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • make

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Rigor Reviewer loads about 570 tokens when it runs. Until then it costs about 53 tokens; SKILL.md has 187 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~53
When it runs · the whole SKILL.md, loaded when a task matches
~570

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from rigortype/rigor at commit 3264953, republished under its MPL-2.0 licence (© rigortype). 187 words, ~570 tokens.

Download SKILL.mdSave it as .claude/skills/rigor-reviewer/SKILL.md (or your agent's skills folder).
name
rigor-reviewer
description
Adversarial review of a Rigor draft PR against architect Acceptance. Default Grok:max; add Opus:high when complex; reserve Fable:medium for complex design. Never merge. Finish Approved or Needs fix.

Rigor reviewer (ADR-115)

Load and follow:

Approved gate

  1. Default: rigor-reviewer-grok (thinking: max) — one Approved suffices.
  2. Complex implementation: also rigor-reviewer-opus (thinking: high); both must Approved.
  3. Complex design: rigor-reviewer (Fable:medium) — reserve for architecture / API / inference-shape work; do not use on routine tidies.

Hard constraints (always)

  • No parallel full-suite make verify on the host (prefer reading CI / targeted checks)
  • Lanes do not CI-watch — you also do not own long sleep-poll loops
  • Issues remain the backlog
  • Never merge
  • Not Gemini-tier for engine review; stay on Grok / Opus / Fable-class

Input

  • Draft PR URL / diff
  • Issue Acceptance (architect contract)
  • Optional prior gate-pass summaries / complexity hint

Output

Exactly one verdict, plus final-approval artifacts when judging for Approve:

text
ReviewOutput:
  verdict:         "Approved" | "Needs fix"
  checklist:       [finding, ...]   # required when Needs fix
  pr_body_draft:   |                # required when this is the final approval pass
    ## Summary
    …
    ## Test plan
    …
  pr_comment_drafts:                # required on final approval pass (may be [])
    - where: "PR conversation" | "file:path:line"
      body:  "…"

Prefer a concrete counterexample when behaviour is claimed.

Reality check: if the existing PR body over-claims relative to the diff, do not rubber-stamp Approved with silence — either Needs fix (implementation) or Approved with a corrected pr_body_draft / comments that make claims match the diff. Orchestrator applies or posts those drafts (reviewer stays read-only / never merges).

Finish phrases (exact)

  • Approved (must include pr_body_draft + pr_comment_drafts on final pass)
  • Needs fix (include actionable checklist)

© rigortype, MPL-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in agents/pi-harness/skills/rigor-reviewer of rigortype/rigor.

Open the folder on GitHubat commit 3264953

Compare with similar skills

Rigor Reviewer next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Rigor Reviewer compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Rigor Reviewer this skillrigortype/rigor106—~570Automated safety check: PassMPL-2.0
Vercel Composition Patternssupabase/supabase111k58 repos~726Automated safety check: PassMIT
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Typescript Advanced Typesrolling-scopes/rsschool-app10k25 repos~4.2kAutomated safety check: PassMPL-2.0
PR Babysitteropeninterpreter/openinterpreter69k3 repos~4.2kAutomated safety check: PassApache-2.0
Code Review ChecklistshareAI-lab/learn-claude-code78k4 repos~1.1kAutomated safety check: PassMIT

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Categories

Questions about Rigor Reviewer

What does Rigor Reviewer do?

Adversarial review of a Rigor draft PR against architect Acceptance. Rigor Reviewer is an agent skill from rigortype/rigor. Adversarial review of a Rigor draft PR against architect Acceptance.

When should I use Rigor Reviewer?

Rigor Reviewer fits situations like: development work in your project.

How do I install Rigor Reviewer in Claude Code?

Run `npx skills add rigortype/rigor --skill rigor-reviewer -a claude-code`. Or copy the skill folder (agents/pi-harness/skills/rigor-reviewer in rigortype/rigor) into .claude/skills/rigor-reviewer in your project. Claude Code loads it when a task matches its description.

How do I install Rigor Reviewer in Codex?

Run `npx skills add rigortype/rigor --skill rigor-reviewer -a codex`. Or copy the skill folder (agents/pi-harness/skills/rigor-reviewer in rigortype/rigor) into .agents/skills/rigor-reviewer in your project. Codex loads it when a task matches its description.

Can I use Rigor Reviewer in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add rigortype/rigor --skill rigor-reviewer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rigor-reviewer, .gemini/skills/rigor-reviewer, .github/skills/rigor-reviewer and .opencode/skills/rigor-reviewer in your project.

What does Rigor Reviewer need to run?

Going by SKILL.md and its folder, Rigor Reviewer needs the command-line tools its instructions call (make).

Does Rigor Reviewer access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Rigor Reviewer safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Rigor Reviewer use?

Rigor Reviewer is published under the MPL-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Rigor Reviewer use?

About 570 tokens (SKILL.md is roughly 2.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Rigor Reviewer?

Skills that share tags, products or a category with Rigor Reviewer: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 297k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Rigor Reviewer?

rigortype (a GitHub organization) maintains it in rigortype/rigor, which has 106 GitHub stars. The repository holds 36 skills in this directory. The repository was last updated on October 10, 2026.

Source: rigortype/rigor on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.