Official agent skill

Feature Flags

by getsentry in getsentry/sentry

Gate a Sentry feature behind a FlagPole feature flag. An agent skill from getsentry/sentry.

OfficialCustom licenceAuto-check passedFrontend & Design

Install Feature Flags

skills CLI
$ npx skills add getsentry/sentry --skill feature-flags -a claude-code

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

GitHub CLI
$ gh skill install getsentry/sentry feature-flags --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/sentry.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/feature-flags .claude/skills/feature-flags && 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
feature-flags
GitHub stars
45k
Token cost
~374 tokens
SKILL.md length
84 words
Files
1
Skills in repo
29
Repo updated
First seen
Licence
Custom licence

At a glance

Gate a Sentry feature behind a FlagPole feature flag. An agent skill from getsentry/sentry.

  • Works in 6 steps: Register the flag in… → Python check → Frontend check (requires api_expose=True) → …
  • Adding a feature flag
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Registering a flag in temporary.py

What it does

Feature Flags is an agent skill from getsentry/sentry, published by the product's own GitHub organization. Gate a Sentry feature behind a FlagPole feature flag. Use when adding a feature flag, registering a flag in temporary.py, checking a flag from Python or the frontend, enabling a flag in tests, or asking where FlagPole rollout config lives. Trigger on "add a feature flag", "gate this behind a flag", "register a flag", "features.has", "apiexpose", "OrganizationFeature", "ProjectFeature", "FlagPole".

Its SKILL.md is about 370 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 Frontend & Design. It works with Sentry and Python. The repository describes itself as: Developer-first error tracking and performance monitoring.

When your agent uses it

  • Adding a feature flag
  • Registering a flag in temporary.py
  • Checking a flag from Python
  • Enabling a flag in tests

Example prompts

  • “add a feature flag”
  • “gate this behind a flag”
  • “register a flag”
  • “/feature-flags”

Requirements

  • Python 3

Workflow steps

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

  1. Register the flag in src/sentry/features/temporary.py
  2. Python check
  3. Frontend check (requires api_expose=True)
  4. Tests
  5. Rollout: FlagPole YAML config lives in the sentry-options-automator repo, not here.
  6. Removal: once the rollout is finished, the flag comes out in a fixed three-PR order — see the remove-option-or-flag skill.

What it can do on your machine

Read from SKILL.md and the folder at commit 87d1203. 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 python and typescript).

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

  • Network

    Links to these hosts (documentation or services it may open):

    • develop.sentry.dev

    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

Feature Flags loads about 374 tokens when it runs. Until then it costs about 104 tokens; SKILL.md has 84 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~104
When it runs · the whole SKILL.md, loaded when a task matches
~374

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 84 words (~374 tokens).

“New features should be gated behind a feature flag.”

— opening of SKILL.md by getsentry, Custom licence
name
feature-flags

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/feature-flags of getsentry/sentry.

Open the folder on GitHubat commit 87d1203

Compare with similar skills

Feature Flags 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.

Feature Flags compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Feature Flags this skillgetsentry/sentry45k—~374Automated safety check: PassCustom licence
Claude Desktop Chinese Localizationjavaht/claude-desktop-zh-cn7.5k—~1.6kAutomated safety check: PassMIT
DocsPrefectHQ/fastmcp28k—~1kAutomated safety check: PassApache-2.0
Language Injectionmicrosoft/data-formulator18k—~1.2kAutomated safety check: PassMIT
Oil UIoil-oil/oil-ui926—~1.7kAutomated safety check: PassMIT
Jarvis Setupethanplusai/jarvis838—~2.5kAutomated safety check: NotesCustom licence

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Works with

Questions about Feature Flags

What does Feature Flags do?

Gate a Sentry feature behind a FlagPole feature flag. An agent skill from getsentry/sentry. Feature Flags is an agent skill from getsentry/sentry, published by the product's own GitHub organization. Gate a Sentry feature behind a FlagPole feature flag.

When should I use Feature Flags?

Feature Flags fits situations like: adding a feature flag; registering a flag in temporary.py; checking a flag from Python; enabling a flag in tests.

How do I install Feature Flags in Claude Code?

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

How do I install Feature Flags in Codex?

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

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

What does Feature Flags need to run?

SKILL.md names no scripts, command-line tools or credentials: Feature Flags is instructions for the agent only. Our summary lists: Python 3.

Does Feature Flags access the network?

SKILL.md names 1 domain. As links in the text: develop.sentry.dev. This is read from the text; nothing was executed.

Is Feature Flags 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 Feature Flags use?

Feature Flags 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 Feature Flags use?

About 374 tokens (SKILL.md is roughly 1.5k 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 Feature Flags?

Skills that share tags, products or a category with Feature Flags: Claude Desktop Chinese Localization (javaht/claude-desktop-zh-cn, 7.5k stars), Docs (PrefectHQ/fastmcp, 28k stars), Language Injection (microsoft/data-formulator, 18k stars) and Oil UI (oil-oil/oil-ui, 926 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Feature Flags?

getsentry (a GitHub organization, an official publisher) maintains it in getsentry/sentry, which has 45,495 GitHub stars. The repository holds 29 skills in this directory. The repository was last updated on October 7, 2026.

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