Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/trsdn/github-copilot-cli/copilot-setup-auditnpx skills add trsdn/github-copilot-cli --skill copilot-setup-auditgit clone --depth 1 https://github.com/trsdn/github-copilot-cliWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00057 | $0.01952 |
| Opus 5 | $0.00028 | $0.00976 |
| Sonnet 5 | $0.00011 | $0.00390 |
| Haiku 4.5 | $0.00006 | $0.00195 |
Grade A, and why
copilot-setup-audit scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 248 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copilot CLI Setup Audit
This skill audits a repository's GitHub Copilot CLI customization setup and provides actionable recommendations.
When to use this skill
- User asks to audit or review their Copilot setup
- User wants to optimize their CLI customization
- User asks "what's missing from my Copilot config?"
- Setting up a new project and want best-practice guidance
Audit Checklist
1. Custom Instructions
Check for existence and content of:
| File | Location | Purpose |
|---|---|---|
copilot-instructions.md |
.github/ |
Repository-wide instructions |
*.instructions.md |
.github/instructions/ |
Path-specific instructions |
AGENTS.md |
Root directory | Agent instructions |
CLAUDE.md |
Root directory | Cross-tool compatibility |
GEMINI.md |
Root directory | Cross-tool compatibility |
Validate:
- YAML frontmatter is valid
applyToglobs match intended files (for scoped instructions)- Instructions are specific and actionable, not vague
- No conflicting instructions between files
2. Custom Agents
Check for agents in:
| Location | Type |
|---|---|
.github/agents/*.agent.md |
Repository-level |
.claude/agents/*.agent.md |
Alternative project-level |
~/.copilot/agents/*.agent.md |
User-level |
Validate:
descriptionis present (required)nameis present (recommended)toolslist is explicit and minimal (security best practice)target, if present, is eithergithub-copilotorvscodedisable-model-invocationanduser-invocableare intentional when presentmcp-servers, if present, uses the MCP configuration schema- Prompt text is under 30,000 characters
3. Agent Skills
Check for skills in:
| Location | Type |
|---|---|
.github/skills/*/SKILL.md |
Project skills |
.agents/skills/*/SKILL.md |
Alternative project skills |
.claude/skills/*/SKILL.md |
Alternative project skills |
~/.copilot/skills/*/SKILL.md |
Personal skills |
~/.agents/skills/*/SKILL.md |
Shared personal skills |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 248 lines · 57 tokens per session scan A 94e7f1d778df
copilot-setup-audit is a skill published in the GitHub repository trsdn/github-copilot-cli (1 stars, last pushed 2mo ago), licensed MIT. It adds 57 tokens to every session and 1,952 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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