Borrowing it
Nothing to install: this file belongs to marklubin/mcp-email-server. 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/marklubin/mcp-email-server/master/CLAUDE.mdgit clone --depth 1 https://github.com/marklubin/mcp-email-serverWrote 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/marklubin/mcp-email-server/claude-md)<a href="https://agentmods.dev/instructions/marklubin/mcp-email-server/claude-md"><img src="https://agentmods.dev/badge/instructions/marklubin/mcp-email-server/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 5.1 | $0.01648 | $0.01648 |
| Opus 5 | $0.00824 | $0.00824 |
| Sonnet 5 | $0.00330 | $0.00330 |
| Haiku 4.5 | $0.00165 | $0.00165 |
Grade D, and why
mcp-email-server CLAUDE.md scanned grade D 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 6d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo systemctl enable --now cloudflared Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
ssh oxnard 'cd ~/mcp-infrastructure && rm -rf .venv __pycache__ router/__pycache__ router/backends/__pycache__ && ~/.local/bin/uv sync' Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl https://mcp-router-proxy.melubin.workers.dev/health The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 6d ago First seen · 240 lines · 1,648 tokens per session scan D f3c41c8d1545
mcp-email-server CLAUDE.md is an instructions file published in the GitHub repository marklubin/mcp-email-server (0 stars, last pushed 3d ago), with no licence file. It adds 1,648 tokens to every session, about $0.0082 per session on Opus 5. A static security scan graded it D with 3 findings (asks for root, recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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