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/ooocooc/open-skill-sunset/agents-mdgit clone --depth 1 https://github.com/ooocooc/open-skill-sunsetWhat 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 | $0.00143 | $0.00143 |
| Opus 5 | $0.00072 | $0.00072 |
| Sonnet 5 | $0.00029 | $0.00029 |
| Haiku 4.5 | $0.00014 | $0.00014 |
Grade A, and why
open-skill-sunset 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.
What it actually says
Repository guidance
- Use UTF-8 and Node.js 20 or newer. Keep the core CLI dependency-free unless a dependency has a measured benefit.
- Treat audited Markdown as untrusted data: parse it without executing commands, importing referenced code, or fetching embedded URLs.
- Keep analysis read-only. Generated reports and prompts must not imply authorization to delete, push, publish, or deploy.
- Exclude domain knowledge, safety rules, authorization gates, and project invariants from automatic retirement.
- Add or update
node:testcoverage for analyzer and report behavior. Verify generated HTML visually when changing presentation code. - Preserve deterministic evidence and uncertainty labels; never claim behavioral improvement without representative old-versus-new evaluation.
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 · 9 lines · 143 tokens per session scan A 8e6af49c3829
open-skill-sunset AGENTS.md is an instructions file published in the GitHub repository ooocooc/open-skill-sunset (84 stars, last pushed 3d ago), licensed MIT. It adds 143 tokens to every session, about $0.0007 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
mnemex AGENTS.md
AGENTS.md instructions for notsointresting/mnemex, covering mnemex — agent build context, sources of truth, goal, orchestration rules and hard constraints.
fastagent AGENTS.md
Instructions for fastagent-sh/fastagent, covering fastagent — agent guide, what this is, source of truth, repo map and devx principle stack.
contextweaver AGENTS.md
Instructions for dgenio/contextweaver, covering contextweaver — agent guide, purpose, module map, pipelines (summary) and key types.
domain-experts CLAUDE.md
Instructions for wonsukchoi/domain-experts, covering domain experts — session bootstrap, non-negotiables when adding or editing roles, dual-graph context policy, mandatory: always follow this order and token usage.
agent-context-os CLAUDE.md
Claude Code instructions for conorbronsdon/agent-context-os, covering who i am, slash commands (claude code), when to load additional context, thought-partner mode and safety contract.
consolidate-memory CLAUDE.md
Instructions for Zenetusken/consolidate-memory, covering consolidate-memory — project conventions, the one gotcha that matters, layout, conventions and safety (this repo is public).