Skill Creator
Azure/azqr
Create new skills, modify and improve existing skills, and measure skill performance.
Build a new agent skill (or restructure an existing one) following Builder Methods conventions.
Install Bm Skill Builder
$ npx skills add buildermethods/bm-skills --skill bm-skill-builder -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install buildermethods/bm-skills bm-skill-builder --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/buildermethods/bm-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/bm-skill-builder .claude/skills/bm-skill-builder && 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 "bm-skill-builder" agent skill from https://github.com/buildermethods/bm-skills/tree/main/skills/bm-skill-builder into .claude/skills/bm-skill-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "bm-skill-builder", 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/buildermethods/bm-skills/tree/main/skills/bm-skill-builderType 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 buildermethods/bm-skills --skill bm-skill-builder -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install buildermethods/bm-skills bm-skill-builder --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/buildermethods/bm-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/bm-skill-builder .agents/skills/bm-skill-builder && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "bm-skill-builder" agent skill from https://github.com/buildermethods/bm-skills/tree/main/skills/bm-skill-builder into .agents/skills/bm-skill-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "bm-skill-builder", 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 buildermethods/bm-skills --skill bm-skill-builder -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install buildermethods/bm-skills bm-skill-builder --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/buildermethods/bm-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/bm-skill-builder .cursor/skills/bm-skill-builder && 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 "bm-skill-builder" agent skill from https://github.com/buildermethods/bm-skills/tree/main/skills/bm-skill-builder into .cursor/skills/bm-skill-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "bm-skill-builder", 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/buildermethods/bm-skills.git --path skills/bm-skill-builder--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 buildermethods/bm-skills --skill bm-skill-builder -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install buildermethods/bm-skills bm-skill-builder --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/buildermethods/bm-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/bm-skill-builder .gemini/skills/bm-skill-builder && 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 "bm-skill-builder" agent skill from https://github.com/buildermethods/bm-skills/tree/main/skills/bm-skill-builder into .gemini/skills/bm-skill-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "bm-skill-builder", 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 buildermethods/bm-skills bm-skill-builderInstalls 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 buildermethods/bm-skills --skill bm-skill-builder -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/buildermethods/bm-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/bm-skill-builder .github/skills/bm-skill-builder && 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 "bm-skill-builder" agent skill from https://github.com/buildermethods/bm-skills/tree/main/skills/bm-skill-builder into .github/skills/bm-skill-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "bm-skill-builder", 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 buildermethods/bm-skills --skill bm-skill-builder -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install buildermethods/bm-skills bm-skill-builder --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/buildermethods/bm-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/bm-skill-builder .opencode/skills/bm-skill-builder && 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 "bm-skill-builder" agent skill from https://github.com/buildermethods/bm-skills/tree/main/skills/bm-skill-builder into .opencode/skills/bm-skill-builder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "bm-skill-builder", 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
bm-skill-builder- GitHub stars
- 146
- Token cost
- ~735 tokens
- SKILL.md length
- 375 words
- Files
- 9
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- MIT
At a glance
Build a new agent skill (or restructure an existing one) following Builder Methods conventions.
- Works in 6 steps: Understand the process —… → Interview the user — steps/interview.md:… → Design the shape — steps/design.md:… → …
- The user wants to create a skill
- SKILL.md covers The process and Hard rules
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Bm Skill Builder is an agent skill from buildermethods/bm-skills. Build a new agent skill (or restructure an existing one) following Builder Methods conventions. Use when the user wants to create a skill, turn a repeatable process into a skill, or restructure a skill that has outgrown its shape — "create a skill", "make this a skill", "turn my proposal process into a skill", "restructure this skill".
Its SKILL.md is about 740 tokens, which your agent loads only when the skill is triggered. The skill folder holds 10 other files (for example `reference/conventions.md`, `reference/example-structures.md` and `steps/build.md`).
It sits in Agent Workflows, covering Skill authoring. The repository describes itself as: A collection of public open-source tools for builders, by Brian Casel @ Builder Methods (buildermethods.com). The licence is MIT.
When your agent uses it
- The user wants to create a skill
- Turn a repeatable process into a skill
- Restructure a skill that has outgrown its shape — create a skill
- Make this a skill
Example prompts
- “create a skill”
- “make this a skill”
- “turn my proposal process into a skill”
- “/bm-skill-builder”
Requirements
- Python 3
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Understand the process — steps/understand.md: ask the user to describe the process the skill is for, then infer what you can — job…
- Interview the user — steps/interview.md: design the skill with the user — description, name, inputs (if any), its own interview (if any)…
- Design the shape — steps/design.md: simple or structured, per the conventions.
- Build it — steps/build.md: write the files against the conventions checklist.
- Save it — steps/save.md: ask where the skill should live — this repo's .agents/skills/, global ~/.agents/skills/, or a .claude alternate…
- Verify & hand off — steps/verify.md: run it from its saved location, then teach the user the improvement loop.
What it can do on your machine
Read from SKILL.md and the folder at commit b6b6a72. 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
Bm Skill Builder loads about 735 tokens when it runs. Until then it costs about 89 tokens; SKILL.md has 375 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 buildermethods/bm-skills at commit b6b6a72, republished under its MIT licence (© buildermethods). 375 words, ~735 tokens.
Download SKILL.mdSave it as
.claude/skills/bm-skill-builder/SKILL.md (or your agent's skills folder). This skill also uses 8 other files; get the full folder from GitHub.- name
- bm-skill-builder
- description
- Build a new agent skill (or restructure an existing one) following Builder Methods conventions. Use when the user wants to create a skill, turn a repeatable process into a skill, or restructure a skill that has outgrown its shape — "create a skill", "make this a skill", "turn my proposal process into a skill", "restructure this skill".
bm-skill-builder
Turns a repeatable process into a well-built agent skill: instructions in plain markdown and folders, portable across any agent harness. Works for brand-new skills and for restructuring existing ones that have outgrown a single SKILL.md.
The process
- Understand the process —
steps/understand.md: ask the user to describe the process the skill is for, then infer what you can — job, inputs, artifact, raw material. - Interview the user —
steps/interview.md: design the skill with the user — description, name, inputs (if any), its own interview (if any), realistic examples (if applicable), and the step plan. Recommend-then-confirm format throughout. - Design the shape —
steps/design.md: simple or structured, per the conventions. - Build it —
steps/build.md: write the files against the conventions checklist. - Save it —
steps/save.md: ask where the skill should live — this repo's.agents/skills/, global~/.agents/skills/, or a.claudealternate — and place it there. - Verify & hand off —
steps/verify.md: run it from its saved location, then teach the user the improvement loop.
Hard rules
- At the start of every invocation of a multi-step skill, present a simple numbered overview of the process with one very short sentence per item, then immediately begin the first step without asking permission or pausing.
- A skill's instructions are plain markdown. SKILL.md and every instruction file (steps, phases, shared, reference docs) are .md — no formats a harness has to interpret. Bundled
scripts/and reference material can be whatever the job needs (a Python script, a JSON schema, a template file). Nothing harness-specific in the skill's core — it must work anywhere. - Start as simple as the process allows. Structure (steps/, phases/, shared/) must be earned by real complexity, never added on spec.
- Order lives in the orchestrator, never in the steps. SKILL.md (or a phase's own file) carries the numbering and points at each step file; step files are topic-named, order-agnostic, and say nothing about their position in the sequence.
- Removal means gone. When removing or reversing anything in a skill, delete it and every reference to it, as if it never existed — no "don't do X" replacements, notes about what changed, legacy fallbacks, or leftover examples. A skill describes only its current process.
- The full conventions live in
reference/conventions.md— read them before designing, and check the finished skill against them before handing off.
© buildermethods, 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 8 other files in skills/bm-skill-builder of buildermethods/bm-skills.
- SKILL.md
- reference/conventions.md
- reference/example-structures.md
- steps/build.md
- steps/design.md
- steps/interview.md
- steps/save.md
- steps/understand.md
- steps/verify.md
Open the folder on GitHubat commit b6b6a72
Compare with similar skills
Bm Skill Builder 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 |
|---|---|---|---|---|---|---|
| Bm Skill Builder this skillbuildermethods/bm-skills | 146 | — | ~735 | Automated safety check: Pass | MIT | |
| Skill CreatorAzure/azqr | 795 | 89 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 | |
| Claude Code Skill Developer Guidediet103/claude-code-infrastructure-showcase | 10k | 11 repos | ~3.5k | Automated safety check: Pass | MIT | |
| Darwin Skill Optimizeralchaincyf/darwin-skill | 6.2k | 1 repos | ~4.7k | Automated safety check: Pass | MIT | |
| Claude Code Command Developmentanthropics/claude-plugins-official | 38k | 10 repos | ~4.8k | Automated safety check: Pass | Apache-2.0 | |
| Claude Code Plugin Structureanthropics/claude-plugins-official | 38k | 10 repos | ~3.4k | Automated safety check: Pass | Apache-2.0 |
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Categories
Questions about Bm Skill Builder
What does Bm Skill Builder do?
Build a new agent skill (or restructure an existing one) following Builder Methods conventions. Bm Skill Builder is an agent skill from buildermethods/bm-skills. Build a new agent skill (or restructure an existing one) following Builder Methods conventions.
When should I use Bm Skill Builder?
Bm Skill Builder fits situations like: the user wants to create a skill; turn a repeatable process into a skill; restructure a skill that has outgrown its shape — create a skill; make this a skill.
How do I install Bm Skill Builder in Claude Code?
Run `npx skills add buildermethods/bm-skills --skill bm-skill-builder -a claude-code`. Or copy the skill folder (skills/bm-skill-builder in buildermethods/bm-skills) into .claude/skills/bm-skill-builder in your project. Claude Code loads it when a task matches its description.
How do I install Bm Skill Builder in Codex?
Run `npx skills add buildermethods/bm-skills --skill bm-skill-builder -a codex`. Or copy the skill folder (skills/bm-skill-builder in buildermethods/bm-skills) into .agents/skills/bm-skill-builder in your project. Codex loads it when a task matches its description.
Can I use Bm Skill Builder 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 buildermethods/bm-skills --skill bm-skill-builder -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/bm-skill-builder, .gemini/skills/bm-skill-builder, .github/skills/bm-skill-builder and .opencode/skills/bm-skill-builder in your project.
What does Bm Skill Builder need to run?
SKILL.md names no scripts, command-line tools or credentials: Bm Skill Builder is instructions for the agent only. Our summary lists: Python 3.
Does Bm Skill Builder 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 Bm Skill Builder 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 Bm Skill Builder use?
Bm Skill Builder 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 Bm Skill Builder use?
About 735 tokens (SKILL.md is roughly 2.9k 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 Bm Skill Builder?
Skills that share tags, products or a category with Bm Skill Builder: Skill Creator (Azure/azqr, 795 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, 38k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Bm Skill Builder?
buildermethods (a GitHub organization) maintains it in buildermethods/bm-skills, which has 146 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on October 8, 2026.
Source: buildermethods/bm-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.