practice-registry

This skill checks Scala, Python, TypeScript, JavaScript, and Rust code against company-specific coding practices before generation, during editing, and before…

by WriterOfficial publisherNot reviewed

Identity proven by GitHub's verified organisation badge (writer)

Agents: Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode, claude.ai and API
License: Apache-2.0 (permissive)
Pin: 9dd6c92pinned Oct 9, 2026
Context cost: about 410 tokenswhen the skill loads
GitHub stars: 15on writer/cerebro
Scripts: None found

What it does

“Use when generating, editing, or reviewing Scala, Python, TypeScript, JavaScript, or Rust code so company-specific practices are checked before planning, after edits, and before final handoff.”

The author's description, from SKILL.md

Generated summary from the skill's own text

This skill checks Scala, Python, TypeScript, JavaScript, and Rust code against company-specific coding practices before generation, during editing, and before submission. It uses the Practice Registry MCP server to scan code for compliance with organizational standards and flags issues that need resolution or approval.

When to use it

Generating or modifying code in supported languages with established company practices
Reviewing code changes to ensure compliance with organizational standards
Integrating practice checks into development workflows before final handoff
Scanning diffs for concrete practice violations and guidance

When not to

Code in languages outside the five supported languages
Working without access to a Practice Registry MCP server
Situations where no company-specific practices are defined

Install

These commands install from the publisher's repository and need no account.

skills CLI

npx skills add writer/cerebro --skill practice-registry

Installs from the repository's default branch, which may have changed since the commit we checked.

GitHub CLI 2.90 or later

gh skill install writer/cerebro practice-registry@9dd6c92664bc6d15430a821b97995b4a53294a6d

Installs the commit we checked (9dd6c92).

Copy by hand

Download the folder at 9dd6c92 and put it in .claude/skills/practice-registry for Claude Code and in .agents/skills/practice-registry for Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode.

Skill folder on GitHub at 9dd6c92

Copy for your agent

A prompt for any coding agent. It installs this skill from GitHub at the pinned commit, copies the files as they are, and runs nothing unless you ask.

Prompt

Install the agent skill "practice-registry" by Writer.

Source, pinned to commit 9dd6c92664bc6d15430a821b97995b4a53294a6d:
https://github.com/writer/cerebro/tree/9dd6c92664bc6d15430a821b97995b4a53294a6d/plugins/practice-registry-mcp/skills/practice-registry

1. Download that folder at exactly this commit. Do not use the default branch.
2. Copy every file unchanged, keeping the folder structure, into .claude/skills/practice-registry/ for Claude Code and .agents/skills/practice-registry/ for Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode. Create the folders if they do not exist.
3. Do not edit the files, and do not run any script in the folder unless I ask you to.
4. When you are done, list the files you copied and where you put them.

Listing and checks: https://www.agentnative.dev/skills/writer/practice-registry

SKILL.md at the pin

---
name: practice-registry
description: Use when generating, editing, or reviewing Scala, Python, TypeScript, JavaScript, or Rust code so company-specific practices are checked before planning, after edits, and before final handoff.
---

# Practice Registry

Use the Practice Registry MCP server for Scala, Python, TypeScript, JavaScript, and Rust code work.

1. Before non-trivial code generation or edits, call `preflight` when intent or files are known.
2. Call `check_plan` with the intent, files, language, framework, dependencies, and planned approach before writing code.
3. After edits, call `scan_diff` with the final diff for concrete changed-line findings.
4. Use `check_diff` for advisory practice guidance when the code shape is broader than a concrete Semgrep finding.
5. Before the final response, call `finalize_change` with the final diff and pass the matching `check_plan` observation id when available.
6. Trust the `passed` field. Treat only `allowed` and `follow_guidance` as pass decisions.
7. Use `explain_practice` before overriding a `discouraged`, `legacy_accepted`, or `needs_review` result.
8. Treat `banned` findings as blockers. Change the code before finishing.
9. Treat `legacy_accepted` as allowed only for the recorded context. Do not add new handwritten uses of legacy patterns.
10. Use `propose_practice` for repeated uncovered decisions and `record_exception` for scoped exception requests.
11. Resolve `needs_review` through the named owner or `record_approval`. Research approval requires an indexed practice plus at least two directly supporting HTTPS sources from independent publishers and domains.
12. Do not use research approval to approve an exception. Exceptions still require the recorded owner decision.

If hooks or CI report a practice finding, fix the code and rerun the same check before summarizing the work.

From writer/cerebro at 9dd6c92, shown as plain text under its license: Apache-2.0 (permissive). The license text is in LICENSE.

View SKILL.md on GitHub at 9dd6c92

Files

SKILL.md1.9 KB · 2da2238de8de

1 file, 1.9 KB in total. Each file has a sha256 in the pin's manifest; the first 12 characters are shown.

Skill folder on GitHub at 9dd6c92

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practice-registry

What it does

When to use it

When not to

Install

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SKILL.md at the pin

Files

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