Code Reviewer
alirezarezvani/claude-skills
Code review automation for TypeScript, JavaScript, Python, Go, Swift, Kotlin, C, .NET, Java, C, C++, Rust, Ruby, PHP, and Dart/Flutter.
Add new C APIs to SkiaSharp by wrapping Skia C++ functionality, or review existing API PRs for correctness and style.
Install API Add Review
$ npx skills add mono/SkiaSharp --skill api-add-review -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mono/SkiaSharp api-add-review --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/mono/SkiaSharp.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/api-add-review .claude/skills/api-add-review && rm -rf skills-srcUse ~/.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/
Install the "api-add-review" agent skill from https://github.com/mono/SkiaSharp/tree/main/.agents/skills/api-add-review into .claude/skills/api-add-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-add-review", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/mono/SkiaSharp/tree/main/.agents/skills/api-add-reviewType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add mono/SkiaSharp --skill api-add-review -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mono/SkiaSharp api-add-review --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mono/SkiaSharp.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/api-add-review .agents/skills/api-add-review && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "api-add-review" agent skill from https://github.com/mono/SkiaSharp/tree/main/.agents/skills/api-add-review into .agents/skills/api-add-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-add-review", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mono/SkiaSharp --skill api-add-review -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mono/SkiaSharp api-add-review --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mono/SkiaSharp.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/api-add-review .cursor/skills/api-add-review && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "api-add-review" agent skill from https://github.com/mono/SkiaSharp/tree/main/.agents/skills/api-add-review into .cursor/skills/api-add-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-add-review", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/mono/SkiaSharp.git --path .agents/skills/api-add-review--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add mono/SkiaSharp --skill api-add-review -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mono/SkiaSharp api-add-review --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mono/SkiaSharp.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/api-add-review .gemini/skills/api-add-review && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "api-add-review" agent skill from https://github.com/mono/SkiaSharp/tree/main/.agents/skills/api-add-review into .gemini/skills/api-add-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-add-review", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install mono/SkiaSharp api-add-reviewInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add mono/SkiaSharp --skill api-add-review -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mono/SkiaSharp.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/api-add-review .github/skills/api-add-review && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "api-add-review" agent skill from https://github.com/mono/SkiaSharp/tree/main/.agents/skills/api-add-review into .github/skills/api-add-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-add-review", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mono/SkiaSharp --skill api-add-review -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mono/SkiaSharp api-add-review --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mono/SkiaSharp.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/api-add-review .opencode/skills/api-add-review && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "api-add-review" agent skill from https://github.com/mono/SkiaSharp/tree/main/.agents/skills/api-add-review into .opencode/skills/api-add-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "api-add-review", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
api-add-review- GitHub stars
- 5.6k
- Token cost
- ~916 tokens
- SKILL.md length
- 327 words
- Files
- 5 (incl. references)
- Skills in repo
- 21
- Repo updated
- First seen
- Licence
- MIT
At a glance
Add new C APIs to SkiaSharp by wrapping Skia C++ functionality, or review existing API PRs for correctness and style.
- Works in 2 steps: Add mode — implement a new API from… → Review mode — review an existing PR/diff…
- Tasks that involve API design
- SKILL.md covers Detecting Mode, ⚠️ Branch Protection…, ❌ NEVER Do These and References, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
API Add Review is an agent skill from mono/SkiaSharp. Add new C APIs to SkiaSharp by wrapping Skia C++ functionality, or review existing API PRs for correctness and style. Two workflows: (1) Add: C++ analysis → C API → bindings → C wrapper → tests → review (2) Review: check naming, Span overloads, properties, tests, interop safety. Triggers: - "add DrawFoo method", "expose SkSurface::draw", "wrap skfoobar" - "add API", "expose function", "wrap method", "create binding for" - "review this API", "check the API surface", "review PR NNN for API design" - Issue…
Its SKILL.md is about 920 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `references/add-workflow.md`, `references/api-design-rules.md` and `references/review-workflow.md`).
It sits in Backend & APIs, covering API design and Pull requests. It works with C# and C++. The repository describes itself as: SkiaSharp is a cross-platform 2D graphics API for .NET platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile… The licence is MIT.
When your agent uses it
- Tasks that involve API design
- Tasks that involve Pull requests
Example prompts
- “add DrawFoo method”
- “expose SkSurface::draw”
- “wrap skfoobar”
- “/api-add-review”
Workflow steps
2 steps, taken from the first numbered list in SKILL.md.
- Add mode — implement a new API from scratch, then review it
- Review mode — review an existing PR/diff for API design correctness
What it can do on your machine
Read from SKILL.md and the folder at commit 51e2097. 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
No scripts in the folder and no shell commands in SKILL.md.
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
API Add Review loads about 916 tokens when it runs, and up to ~6k if it reads all its reference files. Until then it costs about 147 tokens; SKILL.md has 327 words of instructions outside code blocks.
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 mono/SkiaSharp at commit 51e2097, republished under its MIT licence (© mono). 327 words, ~916 tokens.
Download SKILL.mdSave it as
.claude/skills/api-add-review/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.- name
- api-add-review
- description
- Add new C# APIs to SkiaSharp by wrapping Skia C++ functionality, or review existing API PRs for correctness and style. Two workflows: (1) Add: C++ analysis → C API → bindings → C# wrapper → tests → review (2) Review: check naming, Span overloads, properties, tests, interop safety. Triggers: - "add DrawFoo method", "expose SkSurface::draw", "wrap sk_foo_bar" - "add API", "expose function", "wrap method", "create binding for" - "review this API", "check the API surface", "review PR #NNN for API design" - Issue classified as "New API" (after fetching and classification)
Add / Review API Skill
This skill has two modes:
- Add mode — implement a new API from scratch, then review it
- Review mode — review an existing PR/diff for API design correctness
Both modes share the same design rules and quality bar.
Detecting Mode
| User says | Mode |
|---|---|
| "add", "expose", "wrap", "create binding" | Add |
| "review", "check API", "look at PR" | Review |
| Issue classified as "New API" | Add |
| Self-review after adding | Review (automatic) |
⚠️ Branch Protection (COMPLIANCE REQUIRED)
🛑 NEVER commit directly to protected branches. This is a policy violation.
| Repository | Protected Branches | Required Action |
|---|---|---|
| SkiaSharp (parent) | main | Create feature branch first |
| externals/skia (submodule) | main, skiasharp | Create feature branch first |
❌ NEVER Do These
| Shortcut | Consequence |
|---|---|
Commit directly to main or skiasharp | Policy violation |
| Edit generated declarations or interop code manually | Overwritten on regenerate; edit only source-controlled /// trivia and verify preservation |
| Skip native build after C API change | EntryPointNotFoundException |
| Skip tests | Unacceptable |
| Skip tests because they fail | Unacceptable — fix the issue |
| Use default parameters in public APIs | ABI breaking change |
| Invent type names not in upstream Skia | Confusing, wrong naming |
Omit accurate /// comments on public APIs | Consumers receive incomplete compiler XML |
| Fabricate test fonts | Use real fonts from known sources |
References
All three references work together:
| File | Purpose | When to read |
|---|---|---|
| references/api-design-rules.md | Naming, documentation, properties vs methods, Span patterns, type wrapping, test and sample requirements | Always — before writing or reviewing any API |
| references/add-workflow.md | Step-by-step add workflow with C API patterns, struct conversion, JSON config, gallery samples | Add mode |
| references/review-workflow.md | Structured review checklist, test coverage analysis, sample review, auto-fix mode | Review mode, and as final phase of add mode |
| references/troubleshooting.md | Common errors and fixes | When something goes wrong |
Add Mode
- Read api-design-rules.md
- Follow add-workflow.md phases 1-10
- Run review-workflow.md on your own changes
- Fix any issues identified by the review
- Re-run tests to confirm
Review Mode
- Read api-design-rules.md
- Follow review-workflow.md
- In fix-first mode: auto-fix high-confidence issues, re-run tests
- In review-only mode: produce structured feedback report
© mono, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 4 other files (references) in .agents/skills/api-add-review of mono/SkiaSharp.
- SKILL.md
- references/add-workflow.md
- references/api-design-rules.md
- references/review-workflow.md
- references/troubleshooting.md
Open the folder on GitHubat commit 51e2097
Compare with similar skills
API Add Review 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| API Add Review this skillmono/SkiaSharp | 5.6k | — | ~916 | Automated safety check: Pass | MIT | |
| Code Revieweralirezarezvani/claude-skills | 28k | 1 repos | ~1.6k | Automated safety check: Pass | MIT | |
| .NET API Compatibility DesignAaronontheweb/dotnet-skills | 1.2k | 2 repos | ~2.7k | Automated safety check: Pass | MIT | |
| Rsid SDKrealsenseai/RealSenseID | 122 | — | ~4.1k | Automated safety check: Pass | Apache-2.0 | |
| Csharp Nullable Reference TypesAaronontheweb/dotnet-skills | 1.2k | 1 repos | ~2.9k | Automated safety check: Pass | MIT | |
| Generate Testability Wrappersdotnet/skills | 5.6k | 1 repos | ~3.9k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about API Add Review
What does API Add Review do?
Add new C APIs to SkiaSharp by wrapping Skia C++ functionality, or review existing API PRs for correctness and style. API Add Review is an agent skill from mono/SkiaSharp. Add new C APIs to SkiaSharp by wrapping Skia C++ functionality, or review existing API PRs for correctness and style.
When should I use API Add Review?
API Add Review fits situations like: tasks that involve API design; tasks that involve Pull requests.
How do I install API Add Review in Claude Code?
Run `npx skills add mono/SkiaSharp --skill api-add-review -a claude-code`. Or copy the skill folder (.agents/skills/api-add-review in mono/SkiaSharp) into .claude/skills/api-add-review in your project. Claude Code loads it when a task matches its description.
How do I install API Add Review in Codex?
Run `npx skills add mono/SkiaSharp --skill api-add-review -a codex`. Or copy the skill folder (.agents/skills/api-add-review in mono/SkiaSharp) into .agents/skills/api-add-review in your project. Codex loads it when a task matches its description.
Can I use API Add Review 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 mono/SkiaSharp --skill api-add-review -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/api-add-review, .gemini/skills/api-add-review, .github/skills/api-add-review and .opencode/skills/api-add-review in your project.
What does API Add Review need to run?
SKILL.md names no scripts, command-line tools or credentials: API Add Review is instructions for the agent only.
Does API Add Review 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 API Add Review 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 API Add Review use?
API Add Review is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does API Add Review use?
About 916 tokens (SKILL.md is roughly 3.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 5.1k tokens, read only when the agent opens those files.
What are the alternatives to API Add Review?
Skills that share tags, products or a category with API Add Review: Code Reviewer (alirezarezvani/claude-skills, 28k stars), .NET API Compatibility Design (Aaronontheweb/dotnet-skills, 1.2k stars), Rsid SDK (realsenseai/RealSenseID, 122 stars) and Csharp Nullable Reference Types (Aaronontheweb/dotnet-skills, 1.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains API Add Review?
mono (a GitHub organization) maintains it in mono/SkiaSharp, which has 5,585 GitHub stars. The repository holds 21 skills in this directory. The repository was last updated on October 8, 2026.
Source: mono/SkiaSharp on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.