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imap-mcp-server: Instructions file for Claude Code

CLAUDE.md

imap-mcp-server CLAUDE.md is an instructions file for Claude Code from nikolausm/imap-mcp-server. It costs 288 tokens per session, scanned A, original, MIT.

A project instruction file for an IMAP/SMTP server, where IMAP reads email and SMTP sends it. It explains the TypeScript structure, credential protection, stable tool names, build commands and security rules.

In plain words
What is it for?
Use it when adding or modifying email-reading or email-sending operations, service code, exposed tools, shared types, documentation or tests.
Why use it?
It gives coding agents the repository’s boundaries before they change email operations. That helps preserve encrypted credentials, prevent secret logging and keep builds and tests working.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions AGENTS.md.

This is nikolausm/imap-mcp-server's own configuration. It tells Claude Code how to work on imap-mcp-server itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything imap-mcp-server configures →

not rated 91repo +1 yesterday A scan 288 tokens original MIT
View source ↗ nikolausm/imap-mcp-server
Reuse

Borrowing it

Nothing to install: this file belongs to nikolausm/imap-mcp-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.

Copy the file
curl -O https://raw.githubusercontent.com/nikolausm/imap-mcp-server/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/nikolausm/imap-mcp-server

Made for: Claude Code.

Wrote 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.

agentmods badge for imap-mcp-server CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/nikolausm/imap-mcp-server/claude-md/github.svg)](https://agentmods.dev/instructions/nikolausm/imap-mcp-server/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/nikolausm/imap-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/nikolausm/imap-mcp-server/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.

agentmods 80×15 button for imap-mcp-server CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/nikolausm/imap-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/nikolausm/imap-mcp-server/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 288 This file is loaded in full into every session.
When invoked 288 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00288 $0.00288
Opus 5 $0.00144 $0.00144
Sonnet 5 $0.00058 $0.00058
Haiku 4.5 $0.00029 $0.00029

Measured 9d ago against content hash c3c1ca330a27, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

imap-mcp-server 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 9d 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.

CLAUDE.md · 22 lines

What it actually says

CLAUDE.md

Guidance for Claude Code (claude.ai/code) when working in this repository.

The full, agent-agnostic project guide — architecture, build/test commands, security rules, and conventions — lives in @AGENTS.md. Read it first.

Claude-specific notes

  • This is an IMAP/SMTP MCP server (TypeScript, ESM). It uses imapflow for IMAP and nodemailer for SMTP. (It does not use node-imap.)
  • Credentials are stored AES-256 encrypted under ~/.imap-mcp/; all tools return JSON-formatted text.
  • When adding an IMAP/SMTP operation:
    1. Implement it in the relevant service (ImapService / SmtpService).
    2. Expose it via the matching tool file in src/tools/.
    3. Keep tool names (imap_*) stable; write LLM-oriented .describe() text.
    4. Update types in src/types/index.ts, plus README.md and tests.
  • Before committing src/ changes: npm run build && npm test (keep it green).
  • Follow the security rules in @AGENTS.md — no secret logging, no telemetry, no destructive mail ops without explicit guard logic.
Changes

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.

  1. 9d ago First seen · 22 lines · 288 tokens per session scan A c3c1ca330a27

Subscribe to this mod's changes

imap-mcp-server CLAUDE.md is an instructions file published in the GitHub repository nikolausm/imap-mcp-server (91 stars, last pushed yesterday), licensed MIT. It adds 288 tokens to every session, about $0.0014 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.

Backend and APIsLLMSecurityaiclaudeemailimapmcp
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