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/layer1labs/specsmith/copilot-integrationnpx skills add layer1labs/specsmith --skill copilot-integrationgit clone --depth 1 https://github.com/layer1labs/specsmithWhat 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 | $0.00000 | $0.00284 |
| Opus 5 | $0.00000 | $0.00142 |
| Sonnet 5 | $0.00000 | $0.00057 |
| Haiku 4.5 | $0.00000 | $0.00028 |
Grade A, and why
copilot-integration 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 2d 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.
What it actually says
GitHub Copilot — specsmith Governance Integration
One-time setup
specsmith integrate copilot # generates .github/copilot-instructions.md
Copilot reads .github/copilot-instructions.md automatically for all workspace
interactions. The generated file embeds the preflight gate, session protocol,
and hard rules.
Every Copilot session — mandatory protocol
- Run at session start:
specsmith kill-session # idempotent; safe when no processes exist
specsmith audit --project-dir .
specsmith sync --project-dir .
specsmith checkpoint --project-dir .
- Output checkpoint block verbatim.
- Before every code change:
specsmith preflight "<intent>" --json- Only proceed if
decision == "accepted"
- Only proceed if
- Every 8–10 turns:
specsmith checkpoint(output verbatim) - Session end:
specsmith save && specsmith kill-session
Key files
.github/copilot-instructions.md— Copilot workspace instructionsAGENTS.md— universal governance hub.agents/skills/specsmith/SKILL.md— master CLI reference
Note
Copilot does not natively support MCP as of 2026. Governance is enforced
through .github/copilot-instructions.md and AGENTS.md.
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.
- 2d ago First seen · 34 lines · 0 tokens per session scan A 5971de8de3fd
copilot-integration is a skill published in the GitHub repository layer1labs/specsmith (7 stars, last pushed 29d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 284 tokens. 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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