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/codagent-ai/agent-skills/agents-mdgit clone --depth 1 https://github.com/Codagent-AI/agent-skillsWhat 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 | $0.00065 | $0.00065 |
| Opus 5 | $0.00032 | $0.00032 |
| Sonnet 5 | $0.00013 | $0.00013 |
| Haiku 4.5 | $0.00006 | $0.00006 |
Grade A, and why
agent-skills 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:
- agent-skills CLAUDE.md — 100% identical, 0 lines differ
What it actually says
Agent Skills — Development Notes
Skill frontmatter
Do NOT add a name field to skill frontmatter. The name field overrides the skill's display prefix, causing it to show an incorrect or generic name instead of the proper namespaced prefix (e.g. codagent:handoff).
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 · 6 lines · 65 tokens per session scan A 9b76e1846233
agent-skills AGENTS.md is an instructions file published in the GitHub repository Codagent-AI/agent-skills (30 stars, last pushed 1mo ago), licensed MIT. It adds 65 tokens to every session, about $0.0003 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
shuohao-skills CLAUDE.md
Instructions for eternityspring/shuohao-skills, covering claude.md and 行为规则.
postgres-skills AGENTS.md
Instructions for neondatabase/postgres-skills, covering agents.md, repository overview, creating a new skill, directory structure and naming conventions.
redthread AGENTS.md
AGENTS.md instructions for matheusht/redthread, covering redthread agent architecture, 1. core operating guidelines, 2. the orchestration workflow (principal vs subagents), the principal agent must and subagent usage.
skills AGENTS.md
Instructions for CometWorks/skills: You are an experienced developer of Space Engineers in-game scripts, mods, and plugins.
OpenSwarm CLAUDE.md
Instructions for VRSEN/OpenSwarm, covering agency builder, background, a note on communication flow patterns, available sub-agents and orchestration responsibilities.
AiDAPrivate AGENTS.md
AGENTS.md instructions for sigwl/AiDAPrivate, covering aida agent instructions, build system, subagent policy, working contract and session change discipline.