create-copilot-instructions
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Create Copilot Instructions File
Use this skill only when adding a new instruction file for a file type or workflow that currently lacks coverage. For updates to existing files, edit directly.
When to Use This Skill
✅ Use when:
- A new file type is introduced (e.g., first Python script in a C repo)
- A new workflow requires file-scoped rules (e.g., InSpec tests added)
- Existing instruction coverage has a measurable gap
❌ Do NOT use when:
- The file type already has an instruction file — edit it directly
- The rule applies project-wide — add to
copilot-instructions.mdinstead - Only 1-2 files of this type exist — avoid premature abstraction
Workflow
Check for existing coverage.
ls -1 .github/instructions/*.instructions.mdRead
.github/instructions/copilot-customization.instructions.mdoverlap precedence matrix.Survey the target files. Identify patterns, conventions, and existing style in the files you're writing instructions for.
Draft minimal frontmatter.
--- description: 'Brief description of what these instructions cover' applyTo: 'glob/pattern/**/*.ext' ---Test the glob pattern matches intended files:
# Bash glob test shopt -s globstar nullglob files=( glob/pattern/**/*.ext ) printf '%s\n' "${files[@]}"Write actionable rules.
- Be concrete: "Use
sodium_memzero()beforefree()for secret buffers" - Not vague: "Handle memory safely"
- Include code examples for DO and DON'T patterns
- Be concrete: "Use
Validate against SSOT. Confirm the new file follows
.github/instructions/copilot-customization.instructions.mdschema and doesn't conflict with existing overlap precedence rules.Run validation.
scripts/validate-copilot-config.sh
Naming Convention
<topic>.instructions.md where <topic> is lowercase, hyphen-separated, and describes the file type or workflow.
Examples from this repository:
c-memory-safety.instructions.mdcmocka-testing.instructions.mdgnu-autotools.instructions.mdsbom.instructions.md
Required Frontmatter
Refer to .github/instructions/copilot-customization.instructions.md for the authoritative schema. At minimum:
description:(quoted string, one line)applyTo:(comma-separated glob patterns)
Anti-Patterns
- Creating instruction files for domains not present in the repo
- Duplicating rules from existing instruction files
- Writing instructions for a single file (use inline comments instead)
- Including implementation code (instructions define conventions, not solutions)
<!-- tomevault:4.0:skill_md:2026-05-23 -->Source: CTFfactory/salt — distributed by TomeVault.
- Fluxly category
- AI
- Author-declared agents
- No explicit declaration found; this is not inferred or tested compatibility
- Static check
- 88 / 100 · heuristic scan, not runtime safety proof
- Author / version / license
- @tomevault-io · no license declared
- Fluxly token estimate
- Lean
- Fluxly setup estimate
- Plug-and-play
- External API key
- No requirement detected
- Detected OS requirements
- Unspecified
- Runtime requirements
- Python
- Detected file/system behavior
-
- Read-only
- Write / modify
- Detected network behavior
- Local-only
- Install commands
- None (reference only)
Profile is derived at build time from SKILL.md and install vectors. Subject to drift from author intent.
Heads up: 未限定 allowed-tools,默认拥有全部工具权限。
The current SKILL.md does not define a fixed output example. ✅ Use when: A new file type is introduced (e.g., first Python script in a C repo) A new workflow requires file-scoped rules (e.g., InSpec tests added)
Check for existing coverage. Read .github/instructions/copilot-customization.instructions.md overlap precedence matrix. Survey the target files.
<topic>.instructions.md where <topic> is lowercase, hyphen-separated, and describes the file type or workflow. Examples from this repository: c-memory-safety.instructions.md
Refer to .github/instructions/copilot-customization.instructions.md for the authoritative schema. At minimum: description: (quoted string, one line) applyTo: (comma-separated glob patterns)
Creating instruction files for domains not present in the repo Duplicating rules from existing instruction files Writing instructions for a single file (use inline comments instead)
# Create Copilot Instructions File
Use this skill only when adding a **new** instruction file for a file type or workflow that currently lacks coverage. For updates to existing files, edit directly.
## When to Use This Skill
✅ Use when:
- A new file type is introduced (e.g., first Python script in a C repo)
- A new workflow requires file-scoped rules (e.g., InSpec tests added)
- Existing instruction coverage has a measurable gap
❌ Do NOT use when:
- The file type already has an instruction file — edit it directly
- The rule applies project-wide — add to `copilot-instructions.md` instead
- Only 1-2 files of this type exist — avoid premature abstraction
## Workflow
1. **Check for existing coverage.**
```sh
ls -1 .github/instructions/*.instructions.md
```
Read `.github/instructions/copilot-customization.instructions.md` overlap precedence matrix.
2. **Survey the target files.**
Identify patterns, conventions, and existing style in the files you're writing instructions for.
3. **Draft minimal frontmatter.**
```yaml
---
description: 'Brief description of what these instructions cover'
applyTo: 'glob/pattern/**/*.ext'
---
```
Test the glob pattern matches intended files:
```sh
# Bash glob test
shopt -s globstar nullglob
files=( glob/pattern/**/*.ext )
printf '%s\n' "${files[@]}"
```
4. **Write actionable rules.**
- Be concrete: "Use `sodium_memzero()` before `free()` for secret buffers"
- Not vague: "Handle memory safely"
- Include code examples for DO and DON'T patterns
5. **Validate against SSOT.**
Confirm the new file follows `.github/instructions/copilot-customization.instructions.md` schema and doesn't conflict with existing overlap precedence rules.
6. **Run validation.**
```sh
… Author text anchors workflow facts; Fluxly only indexes current sections, terms, files, and commands.
sections -> When to Use This Skill → Workflow → Naming Convention → Required Frontmatter → Anti-Patterns
terms -> new · Check for existing coverage. · Survey the target files. · Draft minimal frontmatter. · Write actionable rules. · Validate against SSOT. · Run validation.
files/cmd -> copilot-instructions.md · .github/instructions/copilot-customization.instructions.md · sodiummemzero() · free() · <topic>.instructions.md · <topic> · c-memory-safety.instructions.md · cmocka-testing.instructions.md
body sha256 -> f841bac7a79d
Decide Fit First
Design Intent
How To Use It
Boundaries And Review