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 skills add trsdn/github-copilot-agent --skill copilot-setup-auditgit clone --depth 1 https://github.com/trsdn/github-copilot-agentWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/trsdn/github-copilot-agent/copilot-setup-audit)<a href="https://agentmods.dev/skills/trsdn/github-copilot-agent/copilot-setup-audit"><img src="https://agentmods.dev/badge/skills/trsdn/github-copilot-agent/copilot-setup-audit/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/trsdn/github-copilot-agent/copilot-setup-audit"><img src="https://agentmods.dev/badge/skills/trsdn/github-copilot-agent/copilot-setup-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.00044 | $0.03853 |
| Opus 5.5 | $0.00018 | $0.01541 |
| Sonnet 5.5 | $0.00009 | $0.00771 |
| Haiku 4.5 | $0.00004 | $0.00385 |
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 1mo ago.
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 — 412 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copilot Setup Audit
This skill provides comprehensive checklists and best practices for auditing a repository's GitHub Copilot customization setup.
When to use this skill
- Setting up Copilot customizations in a new repository
- Reviewing an existing setup for improvements
- Migrating from legacy patterns (chat modes → agents)
- Ensuring team-wide consistency
- Onboarding new team members to the Copilot setup
Audit Checklist
1. Directory Structure
Check for correct directory structure:
.github/
├── agents/ # Custom agents
│ └── *.agent.md
├── prompts/ # Prompt templates
│ └── *.prompt.md
├── instructions/ # Scoped instructions
│ └── *.instructions.md
├── skills/ # Agent skills
│ └── */SKILL.md
├── hooks/ # Hook configurations
│ └── *.json
├── plugin/ # Inert plugin manifest examples
│ └── *.example.json
├── toolsets/ # Inert tool-set examples
│ └── *.example.jsonc
├── copilot-instructions.md # Workspace-wide instructions
└── (optional) AGENTS.md # Alternative: root-level agent instructions
.vscode/
├── settings.json # Workspace settings
└── mcp.example.json # Inert MCP example (copy to mcp.json to enable)
Directory Checks
| Check | Status | Notes |
|---|---|---|
.github/ exists |
Required for most customizations | |
.github/agents/ exists |
Required for custom agents | |
.github/prompts/ exists |
Required for prompt templates | |
.github/instructions/ exists |
Recommended for scoped instructions | |
.github/skills/ exists |
Optional, for Agent Skills | |
.github/hooks/ exists |
Optional, for lifecycle automation | |
.github/toolsets/ exists |
Optional, for tool-set examples | |
.vscode/ exists |
Recommended for workspace settings | |
.vscode/mcp.example.json exists |
Recommended inert MCP example |
2. Custom Instructions
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.
- 1mo ago First seen · 412 lines · 44 tokens per session scan A c20419cbd2e9
copilot-setup-audit is a skill published in the GitHub repository trsdn/github-copilot-agent (3 stars, last pushed 1mo ago), licensed MIT. It adds 44 tokens to every session and 3,853 once invoked, about $0.0002 per session on Opus 5.5. 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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