fusion-rules

Original：🇺🇸 English

Translated

Entrypoint for AI coding assistant rule authoring across GitHub Copilot, Cursor, and Claude Code. USE FOR: setting up rules, reviewing existing rules, scaffolding instruction files, or asking which editor format to use. DO NOT USE FOR: authoring skills (SKILL.md), agent definitions (.agent.md), or CI enforcement of rule files.

3installs

Sourceequinor/fusion-skills

Added on2026-03-24

NPX Install

npx skill4agent add equinor/fusion-skills fusion-rules

SKILL.md Content

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Fusion Rules

Gateway for AI coding assistant rule authoring. Detects the target editor and routes to the right agent.

Routing

Intent	Agent
Set up GitHub Copilot instructions / rules	`agents/copilot.agent.md`
Set up Cursor project rules	`agents/cursor.agent.md`
Set up Claude Code rules / CLAUDE.md	`agents/claude-code.agent.md`
Set up rules for all editors / mixed team	Run all three agents sequentially
Review or improve existing rules	Route to the agent matching the file format

Intent detection

Detect the target editor from the request. Look for:

Copilot — mentions "copilot", "copilot-instructions", ".github/instructions", "applyTo"
Cursor — mentions "cursor", ".cursor/rules", "mdc", "alwaysApply", "globs"
Claude Code — mentions "claude", "CLAUDE.md", ".claude/rules", "paths"
All / unknown — mentions "rules", "instructions", "set up AI rules", or doesn't specify an editor

Route directly based on detected intent. If no editor is specified, run all three agents.

Loading behavior

Load ONLY the routed agent file. Each agent carries the full workflow and references

.system/fusion-rule-author/

assets and templates on demand. Do not preload all agents.

Multi-editor workflow

When targeting multiple editors:

Run the first agent's scan and interview (Steps 1–3) in full
Pass the scan summary and interview answers as context to the remaining agents — they skip Steps 1–3 and start at Step 4 (Classify)
Each agent drafts, reviews, and writes files for its own editor format
Generate parallel files with equivalent content — no duplication within a single editor

What this skill does NOT do

Author skills (
```
SKILL.md
```
) — use
```
fusion-skill-authoring
```
Author agent definitions (
```
.agent.md
```
) — separate concern
Write CI checks for rule validation — out of scope
Migrate entire legacy codebases — incremental adoption only

Safety

No secrets or credentials in rule files
No overwrites without showing diff and getting approval
No invented conventions — only document what the developer confirms
Show drafts before writing any files