How does this skill differ from a standard AI code review prompt?

Unlike generic AI prompts that focus on syntax, this skill adopts a 'skeptical senior' posture to identify architectural flaws, security risks, and technical debt that automated linters and basic LLM queries typically miss.

Which programming languages and version control platforms are supported?

It is language-agnostic and works with any Git-based workflow, including GitHub (via gh CLI) and GitLab, provided your AI agent has access to your repository's file system or API.

What exactly is included in the purchase of this skill?

You receive the optimized system instructions and decision logic that define the Gatekeeper's behavior, along with a structured checklist for its impact analysis and decision-making process.

Does the Gatekeeper actually run my code to verify logic?

The skill uses static analysis to evaluate code; it does not execute your code or run tests in a sandbox unless your specific agent platform is already configured with external tool access to do so.

How difficult is it to set up this skill with my existing agent?

Installation involves importing the skill’s logic into your AI agent’s system prompt or configuration, and ensuring it has the necessary context permissions to read PR descriptions and surrounding file structures.

Can this skill detect if a PR doesn't actually solve the ticket it claims to fix?

The Gatekeeper evaluates the 'intent' by cross-referencing the code diff against your PR descriptions, linked issues, and commit history to ensure the technical solution actually solves the reported problem.

PR Review Gatekeeper

Example session with this skill installed

Review PR #482 in our billing-api repo before it merges. The author claims the new Redis caching layer around invoice validation is safe and drops p95 latency, but CI only ran the happy path. Check the diff against src/billing/validators, the existing cache helpers in src/lib/cache, and docs/caching.md. I care most about whether validation can be skipped on cache hits, whether the new displayMode config option breaks persistence compatibility, and whether the tests would catch a regression. Give me findings sorted by severity with exact change requests, not vague opinions.

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Compiled the pr review gatekeeper

Summary

Reviewed PR #482 (cached invoice validation, 11 files, +540/-72). The bug is real and the intent fits the roadmap, but the warm-cache path still skips validation and the new retry logic ships without failure tests. Verdict: request changes.

Area	Before	After
Blocking issues	none claimed	cache-hit writes bypass `validateRecord()`
Test coverage	happy path only	3 new cases: timeout, success-after-retry, exhausted retries
API clarity	`displayMode` also changes persistence	rename it or split display/storage flags
Docs	`docs/caching.md` untouched	invalidation note added

Next steps

Route warm-cache writes through the same validation path and add a regression test for the warm-cache write.
Add the three retry tests above; assert on outcomes, not implementation internals.
Rename displayMode so the name reflects both effects, or split into two settings.
Include a migration note for the return-type change, or update all known call sites in this PR.
Everything else (naming, guard-clause ordering) batched as optional; not blocking.

Connects securely to your tools. The creator never sees your data.

About this skill

Stop merging risky code and low-quality patches. This skill transforms your agent into a disciplined senior code reviewer that prioritizes repository health over contributor convenience. It moves beyond superficial linting to identify architectural mismatches, security vulnerabilities, and hidden maintenance costs.

What it does

Risk Assessment Categorizes findings into Blocking, Major, Minor, and Optional to focus on what matters.
Intent Validation Cross-references the diff against PR descriptions, linked issues, and commit messages to ensure the solution matches the problem.
API Quality Control Evaluates public interfaces for naming clarity, predictable defaults, and backward compatibility.
Maintenance Analysis Identifies fragile logic, premature abstractions, and hidden coupling that increase long-term technical debt.
Verification Strategy Demands meaningful tests for failure paths and edge cases, not just happy-path coverage.

How it works

Context Gathering The agent inspects the PR description, related tickets, and surrounding files before reading the diff.
Impact Analysis It evaluates correctness, design fit, performance, and operational costs.
Structured Feedback The agent generates specific, actionable comments that explain what was observed, why it matters, and how to fix it.
Decision Logic It applies a rigorous checklist to provide a clear verdict: Approve, Request Changes, or Reject with guidance.

Frameworks & tools

Works with any programming language or framework. Integrates with Git-based workflows, gh CLI, and standard testing suites like pytest, jest, or go test.

Why this beats prompting it yourself

Most prompts result in "LGTM" or pedantic style nits. This skill enforces a skeptical, senior-level posture that catches architectural regressions and security flaws that generic prompts miss.

Use cases

Preventing breaking changes in shared library APIs.
Auditing security-sensitive paths in web backend services.
Ensuring consistent design patterns across a growing microservices mono-repo.
Mentoring junior developers with specific, educational feedback on complex logic.

Known limitations

Cannot execute code in sandboxed environments without external tool access. Performance analysis is based on static inspection, not dynamic profiling.

How to install

Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.

~30 seconds

1
Download the ZIP
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2
Unzip into your skills folder
Every agent reads skills from one folder on your machine. Drop the unzipped folder in there.
3
Ask your agent to use it
Restart the agent if it was already running. It picks the skill up automatically - no config needed.

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Click the path to copy it. Create the folder if it does not exist yet.

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PR Review Gatekeeper