Borrowing it
Nothing to install: this file belongs to mbeacom/adrkit. 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/mbeacom/adrkit/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/mbeacom/adrkitWrote 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/mbeacom/adrkit/copilot-instructions)<a href="https://agentmods.dev/instructions/mbeacom/adrkit/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/mbeacom/adrkit/copilot-instructions/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/mbeacom/adrkit/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/mbeacom/adrkit/copilot-instructions.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 | $0.00310 | $0.00310 |
| Opus 5.5 | $0.00124 | $0.00124 |
| Sonnet 5.5 | $0.00062 | $0.00062 |
| Haiku 4.5 | $0.00031 | $0.00031 |
Grade A, and why
adrkit 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 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.
What it actually says
adrkit — GitHub Copilot
Project memory for this repository is host-neutral and lives in one file.
Read AGENTS.md before doing anything else. It carries the
project overview, the distribution surfaces and their current evidence-ladder
status, the Bun toolchain rules, and the agent working-directory rules —
including the two that have been violated in practice, about never writing to
the maintainer's main checkout and never deleting a branch on commit ancestry
alone.
Nothing project-specific is duplicated here on purpose. A second copy costs context on every session and drifts from the first.
GitHub Copilot specifics
- Path-scoped rules live in
.github/instructions/and apply automatically to the globs they declare —use-bun.instructions.mdis the one that matters most here. .github/agents/and.github/prompts/hold the Spec Kit agent and prompt files. They are generated by Spec Kit; edit the source under.specify/rather than these copies.- This repository is also its own plugin marketplace:
copilot plugin marketplace add mbeacom/adrkit, thencopilot plugin install adrkit@adrkit. When developing that plugin, note thatcopilot plugin installreports only a skill count — "Installed 1 skill" does not mean the agent and commands were dropped. Verify in a fresh session.
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 · 28 lines · 310 tokens per session scan A 29ce6345280a
adrkit copilot-instructions.md is an instructions file published in the GitHub repository mbeacom/adrkit (20 stars, last pushed yesterday), licensed Apache-2.0. It adds 310 tokens to every session, about $0.0012 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 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.