Borrowing it
Nothing to install: this file belongs to aspenkit/aspens. 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/aspenkit/aspens/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/aspenkit/aspensWrote 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/aspenkit/aspens/copilot-instructions)<a href="https://agentmods.dev/instructions/aspenkit/aspens/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/aspenkit/aspens/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/aspenkit/aspens/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/aspenkit/aspens/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 | $0.01361 | $0.01361 |
| Opus 5.5 | $0.00544 | $0.00544 |
| Sonnet 5.5 | $0.00272 | $0.00272 |
| Haiku 4.5 | $0.00136 | $0.00136 |
Grade A, and why
aspens 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.
How it starts
The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copilot Instructions
What This Project Does
aspens is a CLI tool that generates and maintains AI-ready documentation (skills and guidelines) for any codebase. It scans a repo's tech stack, then uses Claude to produce structured markdown "skill files" that Claude Code loads automatically when working in that codebase.
aspens scan # detect tech stack (current dir)
aspens doc init --dry-run # preview generated skills
aspens doc init --mode chunked # generate one domain at a time
aspens doc sync --commits 3 # update skills from last 3 commits
aspens doc sync --install-hook # auto-sync on every commit
Project Setup
npm install # installs commander, @clack/prompts, picocolors
npm link # makes `aspens` available globally for testing
No build step. No test runner configured yet — tests/ is empty.
Architecture
bin/cli.js # entrypoint — welcome screen + subcommands via commander
src/
index.js # barrel exports
commands/
scan.js # pretty/JSON output of scanner results
doc-init.js # full pipeline: scan → mode select → Claude → write
doc-sync.js # diff-based skill updates + git hook installer
add.js # placeholder (Phase 4)
lib/
scanner.js # deterministic tech stack detection (no LLM)
context-builder.js # assembles repo context (used by doc-sync, available for API mode)
runner.js # wraps `claude -p` CLI; prompt loading; output parsing; path sanitization
skill-writer.js # writes parsed {path, content} files to disk
prompts/
doc-init.md # all-at-once init prompt (tool-first: "read before writing")
doc-init-domain.md # single domain skill prompt (for chunked mode)
doc-init-claudemd.md # CLAUDE.md generation prompt
doc-sync.md # sync prompt (diff → skill updates)
partials/ # skill-format.md, guideline-format.md, examples.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.
- 1mo ago First seen · 126 lines · 1,361 tokens per session scan A 79b28c78ae94
aspens copilot-instructions.md is an instructions file published in the GitHub repository aspenkit/aspens (103 stars, last pushed 1mo ago), licensed MIT. It adds 1,361 tokens to every session, about $0.0054 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.
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