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/aspenkit/aspens/agents-mdgit clone --depth 1 https://github.com/aspenkit/aspensWhat 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 | $0.01046 | $0.01046 |
| Opus 5 | $0.00523 | $0.00523 |
| Sonnet 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 2d 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.
- 2d 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 (96 stars, last pushed 17d ago), licensed MIT. It adds 1,046 tokens to every session, about $0.0052 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 2026-08-30.
Other instructions, from other repositories
Skill_Seekers CLAUDE.md
Instructions for yusufkaraaslan/Skill_Seekers, covering claude.md, project overview, essential commands, required before running tests or cli (src/ layout) and run all tests (never skip - all must pass before commits).
docs-to-pdf CLAUDE.md
Instructions for jean-humann/docs-to-pdf, covering claude development guide for docs-to-pdf, project overview, development environment setup, using mise (recommended) and install mise (if not already installed).
core copilot-instructions.md
Instructions for asdecided/core: These decisions are already accepted. Do not re-open or contradict them; ask the AsDecided MCP tools (getartifact, searchartifacts) for the full text before proposing a change that touches one.
backend.ai AGENTS.md
AGENTS.md instructions for lablup/backend.ai, covering ai coding agent guidelines, document structure (agents.md / knowledge.md), writing style, document index and absolute rules (global).
alcove AGENTS.md
Instructions for epicsagas/alcove, covering claude.md, repository purpose, actual location, structure and karpathy 3-layer architecture.
slideops CLAUDE.md
Instructions for glukicov/slideops, covering claude.md, what this repository is, commands, the demo deck's citations must still match this repo and the citation mechanism (the core idea).