Golang Patterns
affaan-m/ECC
Go-specific design patterns and best practices including functional options, small interfaces, dependency injection, concurrency patterns, error handling, and package organization.
A skill your agent uses when the user wants to create templates, extract reusable patterns, document solutions, or build a pattern library from working workflows.
MITAuto-check passed
Install Extract Pattern
$ npx skills add sharpdeveye/maestro --skill extract-pattern -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install sharpdeveye/maestro extract-pattern --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/sharpdeveye/maestro.git skills-src && mkdir -p .claude/skills && cp -r skills-src/source/skills/extract-pattern .claude/skills/extract-pattern && 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 "extract-pattern" agent skill from https://github.com/sharpdeveye/maestro/tree/main/source/skills/extract-pattern into .claude/skills/extract-pattern/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-pattern", 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/sharpdeveye/maestro/tree/main/source/skills/extract-patternType 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 sharpdeveye/maestro --skill extract-pattern -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install sharpdeveye/maestro extract-pattern --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sharpdeveye/maestro.git skills-src && mkdir -p .agents/skills && cp -r skills-src/source/skills/extract-pattern .agents/skills/extract-pattern && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "extract-pattern" agent skill from https://github.com/sharpdeveye/maestro/tree/main/source/skills/extract-pattern into .agents/skills/extract-pattern/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-pattern", 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 sharpdeveye/maestro --skill extract-pattern -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install sharpdeveye/maestro extract-pattern --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sharpdeveye/maestro.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/source/skills/extract-pattern .cursor/skills/extract-pattern && 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 "extract-pattern" agent skill from https://github.com/sharpdeveye/maestro/tree/main/source/skills/extract-pattern into .cursor/skills/extract-pattern/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-pattern", 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/sharpdeveye/maestro.git --path source/skills/extract-pattern--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 sharpdeveye/maestro --skill extract-pattern -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install sharpdeveye/maestro extract-pattern --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sharpdeveye/maestro.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/source/skills/extract-pattern .gemini/skills/extract-pattern && 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 "extract-pattern" agent skill from https://github.com/sharpdeveye/maestro/tree/main/source/skills/extract-pattern into .gemini/skills/extract-pattern/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-pattern", 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 sharpdeveye/maestro extract-patternInstalls 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 sharpdeveye/maestro --skill extract-pattern -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/sharpdeveye/maestro.git skills-src && mkdir -p .github/skills && cp -r skills-src/source/skills/extract-pattern .github/skills/extract-pattern && 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 "extract-pattern" agent skill from https://github.com/sharpdeveye/maestro/tree/main/source/skills/extract-pattern into .github/skills/extract-pattern/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-pattern", 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 sharpdeveye/maestro --skill extract-pattern -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install sharpdeveye/maestro extract-pattern --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/sharpdeveye/maestro.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/source/skills/extract-pattern .opencode/skills/extract-pattern && 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 "extract-pattern" agent skill from https://github.com/sharpdeveye/maestro/tree/main/source/skills/extract-pattern into .opencode/skills/extract-pattern/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "extract-pattern", 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
extract-pattern- GitHub stars
- 592
- Token cost
- ~664 tokens
- SKILL.md length
- 246 words
- Files
- 1
- Skills in repo
- 25
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when the user wants to create templates, extract reusable patterns, document solutions, or build a pattern library from working workflows.
- Works in 3 steps: Identify What Worked → Generalize the Pattern → Test Reusability
- The user wants to create templates
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Extract reusable patterns
What it does
Extract Pattern is an agent skill from sharpdeveye/maestro. Use when the user wants to create templates, extract reusable patterns, document solutions, or build a pattern library from working workflows.
Its SKILL.md is about 660 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Workflow fluency for AI coding agents. 1 core skill · 25 commands · 7 domain references · memory layer · audit trail — works across Cursor, Claude Code, Gemini CLI, Copilot, and… The licence is MIT.
When your agent uses it
- The user wants to create templates
- Extract reusable patterns
- Document solutions
- Build a pattern library from working workflows
Example prompts
- “/extract-pattern”
Workflow steps
3 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 00f9115. 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 markdown).
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
Extract Pattern loads about 664 tokens when it runs. Until then it costs about 40 tokens; SKILL.md has 246 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 sharpdeveye/maestro at commit 00f9115, republished under its MIT licence (© sharpdeveye). 246 words, ~664 tokens.
Download SKILL.mdSave it as
.claude/skills/extract-pattern/SKILL.md (or your agent's skills folder).- name
- extract-pattern
- description
- Use when the user wants to create templates, extract reusable patterns, document solutions, or build a pattern library from working workflows.
- argument-hint
- [source workflow or area]
- category
- utility
- version
- 2.0.0
- user-invocable
- true
MANDATORY PREPARATION
Invoke /agent-workflow — it contains workflow principles, anti-patterns, and the Context Gathering Protocol. Follow the protocol before proceeding — if no workflow context exists yet, you MUST run /teach-maestro first.
Turn working solutions into reusable patterns. Every successful workflow contains patterns that are applicable beyond their original context.
Step 1: Identify What Worked
Review the workflow and identify components that:
- Solved a common problem in a particularly effective way
- Would be useful in other workflows or projects
- Required significant iteration to get right
- Represent a non-obvious solution
Step 2: Generalize the Pattern
Transform the specific solution into a reusable template:
From specific → To general pattern:
## Pattern: [Name]
**Problem**: What recurring problem does this solve?
**When to use**: When is this pattern appropriate?
**When NOT to use**: When is this pattern inappropriate?
**Template**: Copy-pastable starting point with customization markers.
**Variants**: Common variations for different contexts.
**Pitfalls**: What went wrong during development and how it was fixed.
**Examples**: 1-2 concrete examples.Step 3: Test Reusability
- Apply the template to a different but analogous problem
- Confirm the customization points are sufficient
- Verify the documentation is clear enough for someone unfamiliar with the original
| Workflow Element | Extract As |
|---|---|
| Effective prompt structure | Prompt template with customization points |
| Tool chain that works well | Pipeline pattern with data flow diagram |
| Error handling strategy | Resilience pattern with implementation guide |
| Evaluation approach | Quality assurance pattern with scoring rubric |
| Context management technique | Context pattern with budget guidance |
| Agent coordination protocol | Orchestration pattern with handoff templates |
Recommended Next Step
After extracting patterns, run /calibrate to ensure the new patterns are consistent with existing project conventions.
NEVER:
- Extract patterns from workflows that don't work reliably
- Over-generalize (if it only applies to one case, document it as a solution, not a pattern)
- Skip the "when NOT to use" section
- Extract without testing reusability
© sharpdeveye, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in source/skills/extract-pattern of sharpdeveye/maestro.
Open the folder on GitHubat commit 00f9115
Compare with similar skills
Extract Pattern 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 |
|---|---|---|---|---|---|---|
| Extract Pattern this skillsharpdeveye/maestro | 592 | — | ~664 | Automated safety check: Pass | MIT | |
| Golang Patternsaffaan-m/ECC | 275k | — | ~1.1k | Automated safety check: Pass | MIT | |
| Extractalirezarezvani/claude-skills | 28k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Kotlin Exposed Patternsaffaan-m/ECC | 275k | 4 repos | ~5.5k | Automated safety check: Pass | MIT | |
| Dotnet Patternsaffaan-m/ECC | 275k | 1 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Fastapi Patternsaffaan-m/ECC | 275k | — | ~2.3k | Automated safety check: Pass | MIT |
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Questions about Extract Pattern
What does Extract Pattern do?
A skill your agent uses when the user wants to create templates, extract reusable patterns, document solutions, or build a pattern library from working workflows. Extract Pattern is an agent skill from sharpdeveye/maestro. Use when the user wants to create templates, extract reusable patterns, document solutions, or build a pattern library from working workflows.
When should I use Extract Pattern?
Extract Pattern fits situations like: the user wants to create templates; extract reusable patterns; document solutions; build a pattern library from working workflows.
How do I install Extract Pattern in Claude Code?
Run `npx skills add sharpdeveye/maestro --skill extract-pattern -a claude-code`. Or copy the skill folder (source/skills/extract-pattern in sharpdeveye/maestro) into .claude/skills/extract-pattern in your project. Claude Code loads it when a task matches its description.
How do I install Extract Pattern in Codex?
Run `npx skills add sharpdeveye/maestro --skill extract-pattern -a codex`. Or copy the skill folder (source/skills/extract-pattern in sharpdeveye/maestro) into .agents/skills/extract-pattern in your project. Codex loads it when a task matches its description.
Can I use Extract Pattern 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 sharpdeveye/maestro --skill extract-pattern -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/extract-pattern, .gemini/skills/extract-pattern, .github/skills/extract-pattern and .opencode/skills/extract-pattern in your project.
What does Extract Pattern need to run?
SKILL.md names no scripts, command-line tools or credentials: Extract Pattern is instructions for the agent only.
Does Extract Pattern 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 Extract Pattern 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 Extract Pattern use?
Extract Pattern 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 Extract Pattern use?
About 664 tokens (SKILL.md is roughly 2.7k 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 Extract Pattern?
Skills that share tags, products or a category with Extract Pattern: Golang Patterns (affaan-m/ECC, 275k stars), Extract (alirezarezvani/claude-skills, 28k stars), Kotlin Exposed Patterns (affaan-m/ECC, 275k stars) and Dotnet Patterns (affaan-m/ECC, 275k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Extract Pattern?
sharpdeveye (a GitHub user) maintains it in sharpdeveye/maestro, which has 592 GitHub stars. The repository holds 25 skills in this directory. The repository was last updated on April 29, 2026.
Source: sharpdeveye/maestro on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.