Borrowing it
Nothing to install: this file belongs to UKHO/UKHO.GitHubCopilot.ToolKit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/UKHO/UKHO.GitHubCopilot.ToolKit/main/.github/instructions/agentic-assets.instructions.mdgit clone --depth 1 https://github.com/UKHO/UKHO.GitHubCopilot.ToolKitWrote 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/ukho/ukho.githubcopilot.toolkit/agentic-assets)<a href="https://agentmods.dev/instructions/ukho/ukho.githubcopilot.toolkit/agentic-assets"><img src="https://agentmods.dev/badge/instructions/ukho/ukho.githubcopilot.toolkit/agentic-assets/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/instructions/ukho/ukho.githubcopilot.toolkit/agentic-assets"><img src="https://agentmods.dev/badge/instructions/ukho/ukho.githubcopilot.toolkit/agentic-assets.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 | $0.01006 | $0.01006 |
| Opus 5.5 | $0.00402 | $0.00402 |
| Sonnet 5.5 | $0.00201 | $0.00201 |
| Haiku 4.5 | $0.00101 | $0.00101 |
Grade A, and why
UKHO.GitHubCopilot.ToolKit agentic-assets.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 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 — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Lean authoring rules for Copilot assets
Overview
These instructions define how to author and maintain the repository's reusable Copilot governance files, agents, prompts, and templates. They keep assets focused, economical, and evidence-based without weakening quality, wiki alignment, or reviewer clarity.
Scope
Applies to: AGENTS.md, lessons.md, .github/copilot-instructions.md, .github/agents/**/*.agent.md, .github/prompts/**/*.prompt.md, .github/templates/**/*.template.md
- Applies when creating or updating root governance files, repo-wide Copilot guidance, custom agents, prompt files, and reusable templates.
- Complements
./AGENTS.md,./lessons.md, and the existing repo-wide and scoped instruction files. - Does not require human-facing explanatory documentation to become unnaturally terse; apply the strictest output-minimization rules to executable asset workflows.
Instructions
MUST
- Give each asset one clear primary outcome and keep the file name, title, description, and workflow aligned to that outcome.
- Require plan-first behavior for tasks that are more than trivial or need more than two steps.
- Prefer the smallest set of repository reads, searches, and tool calls needed to complete the task safely.
- Prefer semantic or code-graph search before iterative plain-text grep when those capabilities are available and appropriate.
- Cap investigation output deliberately by using targeted file reads, narrow search scopes, line ranges, and structured results.
- Prefer reusable scripts or automation for repeatable inventory, validation, transformation, or consistency checks.
- Use precise repository evidence, preferably
file:linereferences, when citing implementation details, review findings, or non-obvious repository facts. - State model choice intentionally and prefer cheaper models for routine workflows only when that choice has been validated; otherwise keep the current validated model.
- Direct contributors to review
./AGENTS.mdand./lessons.mdwhen authoring or changing reusable repository assets. - Update
./AGENTS.mdwhen a stable repository-wide operating rule emerges. - Update
./lessons.mdwhen implementation, validation, or maintenance reveals a stable lesson worth preserving. - Stop after three failed attempts at the same approach and surface the blocker, evidence, and recommended next move.
- Prefer targeted diff-style edits over full-file rewrites unless replacement is genuinely required.
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 · 77 lines · 1,006 tokens per session scan A 44a08098664d
UKHO.GitHubCopilot.ToolKit agentic-assets.instructions.md is an instructions file published in the GitHub repository UKHO/UKHO.GitHubCopilot.ToolKit (1 stars, last pushed 4mo ago), licensed MIT. It adds 1,006 tokens to every session, about $0.0040 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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