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/cedriccmh/claude-auto-patch/claude-mdgit clone --depth 1 https://github.com/Cedriccmh/claude-auto-patchWrote 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/cedriccmh/claude-auto-patch/claude-md)<a href="https://agentmods.dev/instructions/cedriccmh/claude-auto-patch/claude-md"><img src="https://agentmods.dev/badge/instructions/cedriccmh/claude-auto-patch/claude-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 | $0.00239 | $0.00239 |
| Opus 5 | $0.00120 | $0.00120 |
| Sonnet 5 | $0.00048 | $0.00048 |
| Haiku 4.5 | $0.00024 | $0.00024 |
Grade A, and why
claude-auto-patch CLAUDE.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 4d 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
claude-auto-patch
Configurable auto-patch system for Claude Code. Applies binary patches before Claude starts via a shell wrapper.
Project Structure
install.py - Shell wrapper installer/uninstaller
auto_patch.py - Patch engine (called by shell wrapper)
auto-patch-config.json - Toggle individual patches on/off
skills/
create-patch/ - Skill for creating new patch definitions
SKILL.md - Skill instructions
scripts/ - Helper scripts for code analysis
references/ - Patching best practices guide
Key Concepts
- Shell wrapper:
install.pyinjects aclaude()function into shell profiles that runs patches before launching claude - Equal-length replacement: Patches must be exactly the same byte length as original code
- Three-state detection: Each patch has
target_re(unpatched),patched_re(patched), and implicit "unknown" - Cache mechanism: Uses file mtime to skip re-scanning unchanged binaries
- Platform handling: Windows rename-swap for running exe, macOS codesign
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.
- 4d ago First seen · 25 lines · 239 tokens per session scan A 50963e353fcd
claude-auto-patch CLAUDE.md is an instructions file published in the GitHub repository Cedriccmh/claude-auto-patch (11 stars, last pushed 5mo ago), licensed MIT. It adds 239 tokens to every session, about $0.0012 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.
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