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Agent skill

Skill Creator

by get-bb in get-bb/bb

Create or improve BB skills, including their triggers, instructions, and supporting resources.

MITAuto-check passedAgent Workflows

Install Skill Creator

skills CLI
$ npx skills add get-bb/bb --skill skill-creator -a claude-code

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

GitHub CLI
$ gh skill install get-bb/bb skill-creator --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/get-bb/bb.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/bb-guide/skills/skill-creator .claude/skills/skill-creator && 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
skill-creator
GitHub stars
4.2k
Token cost
~702 tokens
SKILL.md length
352 words
Files
2 (incl. references)
Skills in repo
33
Repo updated
First seen
Licence
MIT

At a glance

Create or improve BB skills, including their triggers, instructions, and supporting resources.

  • Tasks that involve Skill authoring
  • SKILL.md covers Contract, Write for the task and Verify and finish
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Skill Creator is an agent skill from get-bb/bb. Create or improve BB skills, including their triggers, instructions, and supporting resources.

Its SKILL.md is about 700 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/evaluation.md`).

It sits in Agent Workflows, covering Skill authoring. The repository describes itself as: The agent IDE that builds itself. The licence is MIT.

When your agent uses it

  • Tasks that involve Skill authoring

Example prompts

  • “/skill-creator”

What it can do on your machine

Read from SKILL.md and the folder at commit 68a1e8b. 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 yaml).

    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

Skill Creator loads about 702 tokens when it runs, and up to ~902 if it reads all its reference files. Until then it costs about 27 tokens; SKILL.md has 352 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~27
When it runs · the whole SKILL.md, loaded when a task matches
~702
With references · SKILL.md plus every file in references/, read only if the agent opens them
~902

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 get-bb/bb at commit 68a1e8b, republished under its MIT licence (© get-bb). 352 words, ~702 tokens.

Download SKILL.mdSave it as .claude/skills/skill-creator/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
skill-creator
description
Create or improve BB skills, including their triggers, instructions, and supporting resources.

Skill creator

Create skills that add useful domain knowledge and trigger only for relevant tasks. User skills live at ~/.bb/skills/<name>/SKILL.md. Edit built-in and plugin skills at their source, not in generated runtime copies.

Contract

Start SKILL.md with YAML frontmatter:

yaml
---
name: skill-name
description: Briefly state the capability and when it applies.
---

The directory and name must match. Names use lowercase letters, numbers, and single hyphens, with at most 64 characters. Descriptions have a 1024-character limit; use a short, discriminating sentence rather than filling that limit. Preserve supported metadata and invocation settings when editing.

BB loads names and descriptions for discovery, the body when a skill is used, and supporting files when needed. New threads discover revisions; existing threads may retain the version they started with.

Write for the task

  • Keep the purpose, essential constraints, completion criteria, and reference routing in the entrypoint. A short skill needs no extra files.
  • Move substantial mode-specific procedures and examples into references/. State when to read each file; do not require loading every reference.
  • Use scripts/ for repeated deterministic work and assets/ for output templates or resources. Reuse existing resources before adding new ones.
  • Describe outcomes and decision boundaries. Reserve rigid steps for fragile operations where order matters; avoid generic advice, repeated repository rules, keyword catchalls, and model-specific scaffolding.
  • Preserve the user's scope and existing authorization. Continue through authorized implementation and verification; ask only for missing decisions. A skill being loaded does not itself authorize external writes or new work.
  • Keep real safety and product constraints explicit. Explain a constraint when its reason helps the agent apply it correctly.
Show full SKILL.md (100 more words)Show less

Verify and finish

Check frontmatter, resource paths, scripts affected by the edit, and whether realistic requests select the right skill. Include near misses when changing triggers. Preserve working behavior rather than optimizing word count alone.

For substantial workflow or boundary changes, use references/evaluation.md for fresh-thread tests against the previous skill or no-skill baseline. A wording edit does not require full workflow execution. Keep evaluations isolated from live external actions.

Finish after relevant checks pass and demonstrated failures are corrected. Report the changes and any limits of the validation; do not keep testing without new evidence that another run would help.

© get-bb, 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 1 other file (references) in plugins/bb-guide/skills/skill-creator of get-bb/bb.

  • SKILL.md
  • references/evaluation.md

Open the folder on GitHubat commit 68a1e8b

Compare with similar skills

Skill Creator 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 Creator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Skill Creator this skillget-bb/bb4.2k—~702Automated safety check: PassMIT
Skill CreatorAzure/azqr79489 repos~8.2kAutomated safety check: PassApache-2.0
Claude Code Skill Developer Guidediet103/claude-code-infrastructure-showcase10k10 repos~3.5kAutomated safety check: PassMIT
Darwin Skill Optimizeralchaincyf/darwin-skill6.2k1 repos~4.7kAutomated safety check: PassMIT
Claude Code Command Developmentanthropics/claude-plugins-official37k10 repos~4.8kAutomated safety check: PassApache-2.0
Claude Code Plugin Structureanthropics/claude-plugins-official37k10 repos~3.4kAutomated safety check: PassApache-2.0

Similar skills

  • Skill Creator

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    794 GitHub starsUsed in 89 repos~8.2k tokens
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  • Claude Code Skill Developer Guide

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    A guide to creating and managing Claude Code skills with auto-activation: skill-rules.json triggers, hooks, enforcement levels, YAML frontmatter and progressive disclosure.

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  • Darwin Skill Optimizer

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More from get-bb/bb

All 33 skills in this repo

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  • Workflows

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    Author or run durable BB workflows when the user requests workflow execution or multi-agent orchestration.

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  • Verify Bb

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  • Bb Theme Authoring

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    Create or edit BB color themes and inspect them in the Theme Preview panel.

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  • Tasks

    get-bb/bb

    Work on or manage records in BB Tasks, including task keys such as ABC-12.

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Categories

Questions about Skill Creator

What does Skill Creator do?

Create or improve BB skills, including their triggers, instructions, and supporting resources. Skill Creator is an agent skill from get-bb/bb. Create or improve BB skills, including their triggers, instructions, and supporting resources.

When should I use Skill Creator?

Skill Creator fits situations like: tasks that involve Skill authoring.

How do I install Skill Creator in Claude Code?

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

How do I install Skill Creator in Codex?

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

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

What does Skill Creator need to run?

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

Does Skill Creator 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 Skill Creator 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 Skill Creator use?

Skill Creator 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 Skill Creator use?

About 702 tokens (SKILL.md is roughly 2.8k 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 200 tokens, read only when the agent opens those files.

What are the alternatives to Skill Creator?

Skills that share tags, products or a category with Skill Creator: Skill Creator (Azure/azqr, 794 stars), Claude Code Skill Developer Guide (diet103/claude-code-infrastructure-showcase, 10k stars), Darwin Skill Optimizer (alchaincyf/darwin-skill, 6.2k stars) and Claude Code Command Development (anthropics/claude-plugins-official, 37k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Skill Creator?

get-bb (a GitHub organization) maintains it in get-bb/bb, which has 4,155 GitHub stars. The repository holds 33 skills in this directory. The repository was last updated on October 7, 2026.

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