nico-apple-mcp: Instructions file for Claude Code

CLAUDE.md

nico-apple-mcp CLAUDE.md is an instructions file for Claude Code from proxynico/nico-apple-mcp. It costs 129 tokens per session, scanned A, original, MIT.

Project instructions for a Bun and TypeScript connector that works with Apple Calendar, Notes, and Contacts on macOS. Bun is a JavaScript runtime and package manager.

In plain words
What is it for?
Use them when developing or changing the nico-apple-mcp server, especially its Calendar, Notes, or Contacts integration.
Why use it?
They document how calendar changes should be implemented, including a compiled macOS helper and a dry-run option for changes that would modify data.

Instructions file for Claude Code

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

This is proxynico/nico-apple-mcp's own configuration. It tells Claude Code how to work on nico-apple-mcp 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 nico-apple-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to proxynico/nico-apple-mcp. 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/proxynico/nico-apple-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/proxynico/nico-apple-mcp

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.

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README.md
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Per session 129 This file is loaded in full into every session.
When invoked 129 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 $0.00129 $0.00129
Opus 5 $0.00064 $0.00064
Sonnet 5 $0.00026 $0.00026
Haiku 4.5 $0.00013 $0.00013

Measured 9d ago against content hash 9287826529e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

nico-apple-mcp 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 · 12 lines

What it actually says

nico-apple-mcp

Bun/TS MCP server for Apple Calendar, Notes, and Contacts. Commands and Linux/cloud caveats live in AGENTS.md.

  • Calendar goes through the compiled Swift EventKit helper src/helpers/NicoAppleMCPCalendarHelper.app/Contents/MacOS/nico-apple-cal — run bun run build:swift after touching src/helpers/nico-apple-cal.swift.
  • Keep nico-apple-mcp as one server.
  • Prefer EventKit over brittle AppleScript for Calendar writes.
  • Preserve dryRun on mutating tools.
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 · 12 lines · 129 tokens per session scan A 9287826529e4

Subscribe to this mod's changes

nico-apple-mcp CLAUDE.md is an instructions file published in the GitHub repository proxynico/nico-apple-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 129 tokens to every session, about $0.0006 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 2026-08-31.

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