A detailed review process for code changes in a pull request, with special checks for correctness, safety, performance, and .NET MAUI conventions.

Use it to analyze the implementation in a pull request or candidate patch when you want a thorough code-only review without running tests or changing the code.

It helps find defects and risky changes by assessing the code independently of the author's explanation.

How dotnet/maui configures Claude Code and Codex

About the project

.NET MAUI is a C# and XAML framework for building native mobile and desktop applications from one shared codebase. Developers use it to create apps for Android, iOS, iPadOS, macOS, and Windows. The catalogue entries provide skills, instructions, and agents for working with .NET MAUI.

dotnet/maui · 23,322 stars · on GitHub · dot.net

Reuse

Borrowing it

Nothing to install: this file belongs to dotnet/maui. 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/dotnet/maui/main/.github/skills/code-review/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/dotnet/maui

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/dotnet/maui/code-review/github.svg)](https://agentmods.dev/skills/dotnet/maui/code-review)

Your own site

<a href="https://agentmods.dev/skills/dotnet/maui/code-review"><img src="https://agentmods.dev/badge/skills/dotnet/maui/code-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/dotnet/maui/code-review"><img src="https://agentmods.dev/badge/skills/dotnet/maui/code-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 110 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 7,501 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

Snyk warn 7 Sept 2026
NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 6 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium Data Exfiltration · line 77
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
medium Data Exfiltration · line 81
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
medium Data Exfiltration · line 218
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
medium Data Exfiltration · line 219
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
medium Data Exfiltration · line 220
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
medium Data Exfiltration · line 221
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.

How audits are shown

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.

Model	Per session	Once invoked
Fable 5.1	$0.00110	$0.07501
Opus 5.5	$0.00044	$0.03000
Sonnet 5.5	$0.00022	$0.01500
Haiku 4.5	$0.00011	$0.00750

Measured 1mo ago against content hash bdb82fc2b3af, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-review scanned grade A with 1 finding 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 1mo ago.

The scan reads SKILL.md. This mod also ships 2 executable files (tests/fixtures/producer-trace/src/.github/skills/review-test-failures/scripts/Gather-TestFailureContext.ps1, tests/fixtures/producer-trace/src/eng/devices/run-windows-devicetests.cmd), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -fsSL -H 'Accept: application/vnd.github.patch' \

.github/skills/code-review/SKILL.md · 451 lines

How it starts

The opening of the file, as written. The whole thing — 451 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Review Skill

Standalone skill that evaluates PR code changes for correctness, safety, performance, and consistency with .NET MAUI conventions. Can be invoked directly by users or by other agents/skills.

Trigger phrases: "review code for PR #XXXXX", "code review PR #XXXXX", "review this PR's code", "analyze code changes in PR", "check PR code quality"

Do NOT use for: "what does PR #XXXXX do?", "summarize PR", "describe the changes", or any informational query — just answer those directly without invoking this skill.

How this differs from other skills:

pr-review — End-to-end PR workflow (4 phases: pre-flight, gate, try-fix, report). Use when you want the full pipeline including test verification and fix attempts.

pr-finalize — Verifies PR title/description match implementation + light code review. Use before merging.

code-review (this skill) — Deep code-only review with MAUI domain rules. Use when you want a thorough code analysis without running tests or modifying the PR.

Core Principles

Independence-first — Form your assessment from the code BEFORE reading the PR description. This prevents anchoring on the author's framing
Full-context — Read entire source files, not just diffs. Check callers, consumers, and git history
Empirical grounding — Reference specific code, line numbers, and call sites. No vague concerns
Severity calibration — Distinguish errors from warnings from suggestions. Not everything is critical
Failure-mode probing — Challenge your own conclusions with real failure scenarios, not softballs
Propagation-aware guards — For an early return, idempotency flag, or latch above downstream side effects, trace every set/clear path and a repeat call after recipients or state change. If that trace exposes concrete misbehavior, do not dismiss it as rare or rationalize it into LGTM: use NEEDS_DISCUSSION while the failure remains unresolved, or NEEDS_CHANGES when the exact state transition verifies a ❌ Error.
Authentication is not availability — A public GitHub PR remains reviewable when gh is unauthenticated. Never stop or ask for a token merely because a gh command failed; pivot immediately to anonymous public REST/web retrieval.

Read the full file on GitHub · 451 lines

Files

What ships with it

20 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.

1mo ago Changed · +3 lines bdb82fc2b3af
1mo ago First seen · 448 lines · 110 tokens per session scan A 8255b2761e53

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository dotnet/maui (23,322 stars, last pushed today), licensed MIT. It adds 110 tokens to every session and 7,501 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Code review dotnet hacktoberfest maui microsoft multi-platform user-interface

generate-code-cs

Generate the code from typespec for C#. Parameter: C# SDK repository root location .

Azure/azure-sdk-for-net · 26 tokens

build-sample-matrix

Build the matrix of all the samples throughout different frameworks.

Azure/azure-sdk-for-net · 17 tokens

translate-a-sample

Translate the Azure SDK sample from python to C# and generate markdownn file for the sample. Parameters: C# SDK repository root; python SDK repository root; Package name: one of Azure.AI.Projects, Azure.AI.Projects.Agents or Azure.AI.Extensions.OpenAI; The name of sample file in Python SDK repository.

Azure/azure-sdk-for-net · 90 tokens

maui: Skill for Claude Code