What is nico-apple-mcp AGENTS.md?

Project instructions for nico-apple-mcp, a Bun-based connector exposing tools for Apple Calendar, Notes, and Contacts on macOS. Bun is its required JavaScript runtime and package manager.

Use them when installing, type-checking, testing, starting, or building the server's Swift Calendar helper.

They clarify installation, testing, startup, and macOS requirements, including which features are unavailable on Linux or cloud machines.

How proxynico/nico-apple-mcp configures Codex and OpenCode

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/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/proxynico/nico-apple-mcp

Made for: Codex, OpenCode.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/proxynico/nico-apple-mcp/agents-md/github.svg)](https://agentmods.dev/instructions/proxynico/nico-apple-mcp/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/proxynico/nico-apple-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/proxynico/nico-apple-mcp/agents-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.

Your own site · 80×15

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Per session 598 This file is loaded in full into every session.

When invoked 598 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.

Model	Per session	Once invoked
Fable 5.1	$0.00598	$0.00598
Opus 5.5	$0.00239	$0.00239
Sonnet 5.5	$0.00120	$0.00120
Haiku 4.5	$0.00060	$0.00060

Measured 7d ago against content hash 1073456c70b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

nico-apple-mcp AGENTS.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 7d 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.

AGENTS.md · 40 lines

How it starts

The opening of the file, as written. The whole thing — 40 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Overview

Nico Apple MCP is a single MCP (Model Context Protocol) server that exposes 22 tools for macOS Apple apps (Calendar, Notes, Contacts) via AppleScript, JXA, and EventKit. Prefer EventKit over AppleScript for Calendar writes. It uses Bun as its runtime, package manager, and test runner.

Prerequisites

Bun is the required runtime (not Node.js). It is installed to ~/.bun/bin/bun. Ensure $HOME/.bun/bin is on PATH.
The project uses bun.lock — always use bun install (not npm/yarn/pnpm).

Key commands

See package.json scripts for the full list. Summary:

Task	Command
Install deps	`bun install`
Type check	`bun run typecheck`
Run tests	`bun run test` (runs typecheck first, then `bun test`)
Start server	`bun run src/index.ts`
Build Swift helper	`bun run build:swift` after editing `src/helpers/nico-apple-cal.swift` (requires macOS + swiftc). Calendar runs the compiled helper, so a Swift edit is live only after this rebuild.

Linux and cloud agents

macOS-only tools: osascript (AppleScript/JXA) and swiftc (EventKit helper) are unavailable on Linux. Tools that call these will return errors at runtime, which is expected.
Tests should pass on Linux: Validation, module structure, dry-run handler, and startup tests avoid native macOS APIs. Do not hard-code the test count in docs; use the current bun run test output.
MCP server starts on Linux: The stdio-transport server starts and responds to JSON-RPC messages. Use printf '<JSON-RPC>\n' | bun run src/index.ts to interact with it.
build:swift will fail on Linux: Skip this step in non-macOS environments.

Testing the MCP server interactively

The server uses stdio transport. To test manually, pipe newline-delimited JSON-RPC messages:

printf '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"test","version":"1.0.0"}}}\n{"jsonrpc":"2.0","method":"notifications/initialized"}\n{"jsonrpc":"2.0","id":2,"method":"tools/list","params":{}}\n' | bun run src/index.ts

Read the full file on GitHub · 40 lines

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.

7d ago Changed · +39 tokens per session 1073456c70b8
8d ago Changed · -2 lines · -8 tokens per session 6d6d2b3c4a9f
2mo ago First seen · 42 lines · 567 tokens per session scan A 3f3d2f7d4c6f

Subscribe to this mod's changes

nico-apple-mcp AGENTS.md is an instructions file published in the GitHub repository proxynico/nico-apple-mcp (0 stars, last pushed 8d ago), licensed MIT. It adds 598 tokens to every session, about $0.0024 per session on Opus 5.5. 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.

Productivity apple notes apple-calendar apple-contacts bun macos mcp

nico-apple-mcp AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
nico-apple-mcp AGENTS.mdproxynico/nico-apple-mcp	Instructions file	0	8d ago	MIT	A	598	Codex, OpenCode
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

nico-apple-mcp: Instructions file for Codex