Borrowing it
Nothing to install: this file belongs to lacymorrow/lacy. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/lacymorrow/lacy/main/CLAUDE.mdgit clone --depth 1 https://github.com/lacymorrow/lacyWrote 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/lacymorrow/lacy/claude-md)<a href="https://agentmods.dev/instructions/lacymorrow/lacy/claude-md"><img src="https://agentmods.dev/badge/instructions/lacymorrow/lacy/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/lacymorrow/lacy/claude-md"><img src="https://agentmods.dev/badge/instructions/lacymorrow/lacy/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.07912 | $0.07912 |
| Opus 5.5 | $0.03165 | $0.03165 |
| Sonnet 5.5 | $0.01582 | $0.01582 |
| Haiku 4.5 | $0.00791 | $0.00791 |
Grade E, and why
lacy CLAUDE.md scanned grade E with 3 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 20d 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
| curl | `curl -fsSL https://lacy.sh/install \| bash` | Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
2. Leading `!` → shell, any mode. Glued (`!rm -rf x`) the accept-line widget strips the `!`. With a space (`! true`) it is shell negation, left intact. Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
| curl | `curl -fsSL https://lacy.sh/install \| bash` | The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- 20d ago Changed · +22 tokens per session 1e44403b33a1
- 26d ago Changed · +1 lines · +104 tokens per session 737f1f7096a9
- 1mo ago Changed · +3 lines · +389 tokens per session b9ed9189e527
- 1mo ago Changed · +511 tokens per session 8542fbbc24d4
- 1mo ago Changed · +43 lines · +2,127 tokens per session 1bb73a294e80
- 2mo ago First seen · 341 lines · 4,759 tokens per session scan E e1a1f092122f
lacy CLAUDE.md is an instructions file published in the GitHub repository lacymorrow/lacy (30 stars, last pushed yesterday), with no licence file. It adds 7,912 tokens to every session, about $0.0316 per session on Opus 5.5. A static security scan graded it E with 3 findings (downloads and executes remote code, recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
lacy CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| lacy CLAUDE.mdlacymorrow/lacy | Instructions file | 30 | yesterday | none | E | 7,912 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |