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 instructions/jeremylongworth-source/agentskills/copilot-instructionsgit clone --depth 1 https://github.com/jeremylongworth-source/AgentSkillsWrote 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/instructions/jeremylongworth-source/agentskills/copilot-instructions)<a href="https://agentmods.dev/instructions/jeremylongworth-source/agentskills/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/jeremylongworth-source/agentskills/copilot-instructions.svg" alt="Measured on agentmods" 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 | $0.00079 | $0.00079 |
| Opus 5 | $0.00039 | $0.00039 |
| Sonnet 5 | $0.00016 | $0.00016 |
| Haiku 4.5 | $0.00008 | $0.00008 |
Grade A, and why
AgentSkills copilot-instructions.md 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.
What it actually says
GitHub Copilot Instructions
Use installed AgentSkills when a task matches a skill description. Read the
matching SKILL.md before applying a specialist workflow.
Keep repository-wide build, test, style, and review facts here. Put detailed procedures in skills so they load only when relevant.
Before proposing release-facing changes, check the relevant QA and release-readiness guidance.
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 · 11 lines · 79 tokens per session scan A 70c4f3e53481
AgentSkills copilot-instructions.md is an instructions file published in the GitHub repository jeremylongworth-source/AgentSkills (1 stars, last pushed 2d ago), licensed MIT. It adds 79 tokens to every session, about $0.0004 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 2026-09-03.
Other instructions, from other repositories
idd-skill copilot-instructions.md
Copilot instructions for kurone-kito/idd-skill, covering guidelines for ai agents, tooling priority and compatibility, conversation, branch strategy and rules.
idd-skill AGENTS.md
AGENTS.md instructions for kurone-kito/idd-skill, covering guidelines for ai agents, minimum requirements, project standards, key workflow rules and for idd work.
idd-skill CLAUDE.md
Claude Code instructions for kurone-kito/idd-skill, covering guidelines for ai agents, minimum requirements, project standards, key workflow rules and for idd work.
idd-skill idd-claim.instructions.md
Instructions for kurone-kito/idd-skill, covering idd — claim phase (a5), canonical a5(a) path (helper-first), source repo / vendored-node, package-manager / ephemeral-npx and pre-checks (all five must pass).
idd-skill idd-discover.instructions.md
Instructions for kurone-kito/idd-skill, covering idd — discover phase (a0-t–a4), authoring label guard, a0-t — explicit issue target shortcut, a0 — check issue-scope setting and a0-o — discover orphan issues.
idd-skill idd-merge.instructions.md
Instructions for kurone-kito/idd-skill, covering idd — merge execution phase (f3–f5), f3 — merge, f4 — cleanup and f5 — loop.