Official agent skill

Review Scenario

by modelcontextprotocol in modelcontextprotocol/conformance

A skill your agent uses when reviewing a conformance PR that adds or changes scenario .ts files for a SEP — before approving, before requesting changes, or as a self-check before opening one.

OfficialCustom licenceAuto-check passedAgent Workflows

Install Review Scenario

skills CLI
$ npx skills add modelcontextprotocol/conformance --skill review-scenario -a claude-code

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

GitHub CLI
$ gh skill install modelcontextprotocol/conformance review-scenario --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/modelcontextprotocol/conformance.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/review-scenario .claude/skills/review-scenario && 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
review-scenario
GitHub stars
129
Token cost
~983 tokens
SKILL.md length
474 words
Files
1
Skills in repo
3
Repo updated
First seen
Licence
Custom licence

At a glance

A skill your agent uses when reviewing a conformance PR that adds or changes scenario .ts files for a SEP — before approving, before requesting changes, or as a self-check before opening one.

  • Reviewing a conformance PR that adds
  • SKILL.md covers What to check and Output
  • Calls gh and npx; reaches pkg.pr.new
  • Changes scenario .ts files for a SEP — before approving

What it does

Review Scenario is an agent skill from modelcontextprotocol/conformance, published by the product's own GitHub organization. Use when reviewing a conformance PR that adds or changes scenario .ts files for a SEP — before approving, before requesting changes, or as a self-check before opening one.

Its SKILL.md is about 980 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 Agent Workflows, covering Verification before completion. The repository describes itself as: Conformance Tests for MCP.

When your agent uses it

  • Reviewing a conformance PR that adds
  • Changes scenario .ts files for a SEP — before approving
  • Before requesting changes
  • As a self-check before opening one

Example prompts

  • “/review-scenario”

Requirements

  • Node.js

What it can do on your machine

Read from SKILL.md and the folder at commit c37eec8. 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:

    • gh
    • npx

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

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • pkg.pr.new

    Also links to:

    • modelcontextprotocol.io

    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

Review Scenario loads about 983 tokens when it runs. Until then it costs about 47 tokens; SKILL.md has 474 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~47
When it runs · the whole SKILL.md, loaded when a task matches
~983

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 474 words (~983 tokens).

“Spec diff is ground truth. Pull the SEP's actual spec changes and read the RFC-2119 sentences yourself — don't trust the PR description or SEP summary for keyword levels:”

— opening of SKILL.md by modelcontextprotocol, Custom licence
name
review-scenario

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/review-scenario of modelcontextprotocol/conformance.

Open the folder on GitHubat commit c37eec8

Compare with similar skills

Review Scenario 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.

Review Scenario compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Review Scenario this skillmodelcontextprotocol/conformance129—~983Automated safety check: PassCustom licence
Show Me Your Work Decision Logcursor/plugins10k9 repos~1.6kAutomated safety check: PassNone
Verification Before Completionfarm-fe/farm5.6k45 repos~1kAutomated safety check: PassMIT
Scope Creep Guardlennney/stop-that-shit2.5k1 repos~2kAutomated safety check: PassMIT
PUA High-Agency Governancetanweai/pua20k—~502Automated safety check: PassMIT
Incremental Implementationaddyosmani/agent-skills102k1 repos~2.3kAutomated safety check: PassMIT

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Categories

Questions about Review Scenario

What does Review Scenario do?

A skill your agent uses when reviewing a conformance PR that adds or changes scenario .ts files for a SEP — before approving, before requesting changes, or as a self-check before opening one. Review Scenario is an agent skill from modelcontextprotocol/conformance, published by the product's own GitHub organization.ts files for a SEP — before approving, before requesting changes, or as a self-check before opening one.

When should I use Review Scenario?

Review Scenario fits situations like: reviewing a conformance PR that adds; changes scenario .ts files for a SEP — before approving; before requesting changes; as a self-check before opening one.

How do I install Review Scenario in Claude Code?

Run `npx skills add modelcontextprotocol/conformance --skill review-scenario -a claude-code`. Or copy the skill folder (.claude/skills/review-scenario in modelcontextprotocol/conformance) into .claude/skills/review-scenario in your project. Claude Code loads it when a task matches its description.

How do I install Review Scenario in Codex?

Run `npx skills add modelcontextprotocol/conformance --skill review-scenario -a codex`. Or copy the skill folder (.claude/skills/review-scenario in modelcontextprotocol/conformance) into .agents/skills/review-scenario in your project. Codex loads it when a task matches its description.

Can I use Review Scenario 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 modelcontextprotocol/conformance --skill review-scenario -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/review-scenario, .gemini/skills/review-scenario, .github/skills/review-scenario and .opencode/skills/review-scenario in your project.

What does Review Scenario need to run?

Going by SKILL.md and its folder, Review Scenario needs the command-line tools its instructions call (gh and npx). Our summary lists: Node.js.

Does Review Scenario access the network?

SKILL.md names 2 domains. In commands or code: pkg.pr.new; the agent is likely to contact it when it follows the instructions. As links in the text: modelcontextprotocol.io. This is read from the text; nothing was executed.

Is Review Scenario 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 Review Scenario use?

Review Scenario has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Review Scenario use?

About 983 tokens (SKILL.md is roughly 3.9k 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 Review Scenario?

Skills that share tags, products or a category with Review Scenario: Show Me Your Work Decision Log (cursor/plugins, 10k stars), Verification Before Completion (farm-fe/farm, 5.6k stars), Scope Creep Guard (lennney/stop-that-shit, 2.5k stars) and PUA High-Agency Governance (tanweai/pua, 20k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Review Scenario?

modelcontextprotocol (a GitHub organization, an official publisher) maintains it in modelcontextprotocol/conformance, which has 129 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on October 5, 2026.

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