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/AGENTS.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/agents-md)<a href="https://agentmods.dev/instructions/aspenkit/aspens/agents-md"><img src="https://agentmods.dev/badge/instructions/aspenkit/aspens/agents-md/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/agents-md"><img src="https://agentmods.dev/badge/instructions/aspenkit/aspens/agents-md.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 | $0.01046 | $0.01046 |
| Opus 5.5 | $0.00418 | $0.00418 |
| Sonnet 5.5 | $0.00209 | $0.00209 |
| Haiku 4.5 | $0.00105 | $0.00105 |
Grade A, and why
aspens AGENTS.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.
Copies of this mod
1 near-identical copy found in the catalogue:
- aspens CLAUDE.md — 88% identical, 34 lines differ
How it starts
The opening of the file, as written. The whole thing — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.
aspens
Skills
.agents/skills/base/SKILL.md— Base repo skill; load whenever working in this repo..agents/skills/agent-customization/SKILL.md— LLM-powered injection of project context into installed agent templates viaaspens customize agents.agents/skills/claude-runner/SKILL.md— Claude/Codex CLI execution layer — prompt loading, stream-json parsing, file output extraction, path sanitization, skill file writing, and skill rule generation.agents/skills/cli-shell/SKILL.md— Top-level Commander wiring, welcome screen, missing-hook warning, CliError exit handling, and the public programmatic API surface.agents/skills/codex-support/SKILL.md— Multi-target output system — target abstraction, backend routing, content transforms for Codex CLI and future targets.agents/skills/doc-impact/SKILL.md— Context health analysis — freshness, domain coverage, hub surfacing, drift detection, LLM-powered interpretation, and auto-repair for generated agent context.agents/skills/doc-sync/SKILL.md— Incremental skill updater that maps git diffs to affected skills and optionally auto-syncs via a post-commit hook.agents/skills/import-graph/SKILL.md— Static import analysis that builds dependency graphs, domain clusters, hub files, git churn hotspots, and file priority rankings.agents/skills/repo-scanning/SKILL.md— Deterministic repo analysis — language/framework detection, structure mapping, domain discovery, health checks, and import graph integration.agents/skills/save-tokens/SKILL.md— Token-saving session automation — statusline, prompt guard, precompact handoffs, session rotation, and handoff commands for Claude Code.agents/skills/skill-generation/SKILL.md— LLM-powered generation pipeline for Claude Code skills and CLAUDE.md — doc-init command, prompt system, context building, and output parsing.agents/skills/template-library/SKILL.md— Bundled agents, commands, hooks, and settings that users install viaaspens add,aspens doc init, andaspens save-tokensinto their .claude/ directories.agents/skills/architecture/SKILL.md— Import graph and code-map reference for structural changes.
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 · 51 lines · 1,046 tokens per session scan A 9986f2cf185f
aspens AGENTS.md is an instructions file published in the GitHub repository aspenkit/aspens (103 stars, last pushed 1mo ago), licensed MIT. It adds 1,046 tokens to every session, about $0.0042 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
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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.
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Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.