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/cresslank/how2claude/agents-mdgit clone --depth 1 https://github.com/cresslank/how2claudeWrote 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/cresslank/how2claude/agents-md)<a href="https://agentmods.dev/instructions/cresslank/how2claude/agents-md"><img src="https://agentmods.dev/badge/instructions/cresslank/how2claude/agents-md.svg" alt="Measured on agentmods" 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 | $0.00069 | $0.00069 |
| Opus 5 | $0.00034 | $0.00034 |
| Sonnet 5 | $0.00014 | $0.00014 |
| Haiku 4.5 | $0.00007 | $0.00007 |
Grade C, and why
how2claude AGENTS.md scanned grade C with 1 finding 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 5d 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.
Hidden instructionshighPrompt injection
Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.
<!-- This file is for AI coding tools other than Claude Code. Tools that read this file include: Codex CLI, Cursor, Windsurf, and others. The first line points these tools to CLAUDE.md, which contains the actual project What it actually says
CLAUDE.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.
- 5d ago First seen · 10 lines · 69 tokens per session scan C fa51be2d3e6e
how2claude AGENTS.md is an instructions file published in the GitHub repository cresslank/how2claude (3 stars, last pushed 8mo ago), licensed Apache-2.0. It adds 69 tokens to every session, about $0.0003 per session on Opus 5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
model-mondays AGENTS.md
Instructions for microsoft/model-mondays, covering agent guidelines for model mondays repository, 📋 repository overview, content structure, 🎯 key conventions and file naming patterns.
academic-writing-toolkit AGENTS.md
AGENTS.md instructions for yha9806/academic-writing-toolkit, covering academic writing project, skill discovery, project overview, directories and targets.
hahow-mentor-agent CLAUDE.md
Claude Code instructions for htlin222/hahow-mentor-agent, covering hahow mentor agent — project notes for claude, auto-relay: hahow-watcher channel (research preview), --dangerously-skip-permissions, routine: batch-draft outstanding student questions and project layout reminders.
academic-writing-toolkit GEMINI.md
Gemini CLI instructions for yha9806/academic-writing-toolkit, covering academic writing project, skill discovery, project overview, directories and targets.
vibe-coding-prompt-template backend.instructions.md
Instructions for KhazP/vibe-coding-prompt-template: Read AGENTS.md, agentdocs/techstack.md, and agentdocs/codepatterns.md.
open-dictionary AGENTS.md
Instructions for ahpxex/open-dictionary, covering open dictionary rewrite charter, product framing, core workflow, technical framework and 1. raw ingestion layer.