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Official agent skill

Warden

by getsentry in getsentry/warden

Run Warden to analyze code changes before committing. An agent skill from getsentry/warden.

OfficialCustom licenceAuto-check passed

Install Warden

skills CLI
$ npx skills add getsentry/warden --skill warden -a claude-code

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

GitHub CLI
$ gh skill install getsentry/warden warden --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/getsentry/warden.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/warden .claude/skills/warden && 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
warden
GitHub stars
414
Token cost
~610 tokens
SKILL.md length
208 words
Files
7 (incl. references)
Skills in repo
8
Repo updated
First seen
Licence
Custom licence

At a glance

Run Warden to analyze code changes before committing. An agent skill from getsentry/warden.

  • Works in 4 steps: Run warden to analyze uncommitted changes → Review the findings → Fix issues Warden reports (or use warden… → …
  • Asked to run warden
  • SKILL.md covers References, Running Warden, Pre-Commit Workflow and Reading Output, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Warden is an agent skill from getsentry/warden, published by the product's own GitHub organization. Run Warden to analyze code changes before committing. Use when asked to "run warden", "check my changes", "review before commit", "warden config", "warden.toml", "create a warden skill", "add trigger", or any Warden-related local development task.

Its SKILL.md is about 610 tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including reference files (for example `SOURCES.md`, `SPEC.md` and `references/cli-reference.md`).

The repository describes itself as: Your code is under new management. Agents that review your code.

When your agent uses it

  • Asked to run warden
  • Check my changes
  • Review before commit
  • Create a warden skill

Example prompts

  • “run warden”
  • “check my changes”
  • “review before commit”
  • “/warden”

Workflow steps

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

  1. Run warden to analyze uncommitted changes
  2. Review the findings
  3. Fix issues Warden reports (or use warden --fix to auto-apply)
  4. Commit the changes

What it can do on your machine

Read from SKILL.md and the folder at commit 1ee135e. 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 (its code samples are bash).

    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

Warden loads about 610 tokens when it runs, and up to ~5.1k if it reads all its reference files. Until then it costs about 64 tokens; SKILL.md has 208 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~64
When it runs · the whole SKILL.md, loaded when a task matches
~610
With references · SKILL.md plus every file in references/, read only if the agent opens them
~5.1k

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 208 words (~610 tokens).

“Run Warden to analyze code changes before committing.”

— opening of SKILL.md by getsentry, Custom licence
name
warden

Read the full SKILL.md on GitHub

Files

SKILL.md and 6 other files (references) in skills/warden of getsentry/warden.

  • SKILL.md
  • SOURCES.md
  • SPEC.md
  • references/cli-reference.md
  • references/config-schema.md
  • references/configuration.md
  • references/creating-skills.md

Open the folder on GitHubat commit 1ee135e

Compare with similar skills

Warden 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.

Warden compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Warden this skillgetsentry/warden414—~610Automated safety check: PassCustom licence
Commitsickn33/agentic-awesome-skills47k2 repos~1.3kAutomated safety check: PassMIT
Commitdavila7/claude-code-templates32k3 repos~730Automated safety check: PassMIT
Commitwindmill-labs/windmill18k—~447Automated safety check: PassCustom licence
Commitccusage/ccusage19k—~722Automated safety check: PassCustom licence
Commitantiwork/gumroad9.8k—~503Automated safety check: PassMIT

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    sickn33/agentic-awesome-skills

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  • Commits

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More from getsentry/warden

All 8 skills in this repo

  • Skill Writer

    getsentry/warden

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    Create, synthesize, and iteratively improve agent skills following the Agent Skills specification.

    414 GitHub starsUsed in 1 repo~2.5k tokens
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  • Warden Sweep

    getsentry/warden

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    Full-repository code sweep. An agent skill from getsentry/warden.

    414 GitHub stars~780 tokensUpdated 7 days ago
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  • Warden Service

    getsentry/warden

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    Queries and summarizes the Warden Service read API. An agent skill from getsentry/warden.

    414 GitHub stars~944 tokensUpdated 7 days ago
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  • Agent Prompt

    getsentry/warden

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    Reference guide for writing effective agent prompts and skills.

    414 GitHub stars~430 tokensUpdated 7 days ago
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  • Code Review

    getsentry/warden

    Official

    Finds real correctness bugs in code changes. An agent skill from getsentry/warden.

    414 GitHub stars~1.9k tokensUpdated 7 days ago
    Auto-check passed

  • Security Review

    getsentry/warden

    Official

    Finds exploitable application security vulnerabilities in code changes.

    414 GitHub stars~1.8k tokensUpdated 7 days ago
    Auto-check passed

Questions about Warden

What does Warden do?

Run Warden to analyze code changes before committing. An agent skill from getsentry/warden. Warden is an agent skill from getsentry/warden, published by the product's own GitHub organization. Run Warden to analyze code changes before committing.

When should I use Warden?

Warden fits situations like: asked to run warden; check my changes; review before commit; create a warden skill.

How do I install Warden in Claude Code?

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

How do I install Warden in Codex?

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

Can I use Warden 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 getsentry/warden --skill warden -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/warden, .gemini/skills/warden, .github/skills/warden and .opencode/skills/warden in your project.

What does Warden need to run?

SKILL.md names no scripts, command-line tools or credentials: Warden is instructions for the agent only.

Does Warden 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 Warden 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 Warden use?

Warden 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 Warden use?

About 610 tokens (SKILL.md is roughly 2.4k 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 4.5k tokens, read only when the agent opens those files.

What are the alternatives to Warden?

Skills that share tags, products or a category with Warden: Commit (sickn33/agentic-awesome-skills, 47k stars), Commit (davila7/claude-code-templates, 32k stars), Commit (windmill-labs/windmill, 18k stars) and Commit (ccusage/ccusage, 19k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Warden?

getsentry (a GitHub organization, an official publisher) maintains it in getsentry/warden, which has 414 GitHub stars. The repository holds 8 skills in this directory. The repository was last updated on September 30, 2026.

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