MacuseSAFE
MCP server for Mac — give AI direct control of Calendar, Mail, Notes, Reminders, Messages, and any Mac app via Computer Use, on-device. Works with Claude Desktop, Cursor, Codex, Raycast, VS Code, Warp, Zed, LM Studio.
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
Give your AI direct control of Calendar, Mail, Notes, Reminders, Messages, and any other Mac app over the Model Context Protocol — an MCP server for Mac plus Computer Use for macOS, fully on-device.
Works with Claude Desktop, Cursor, Codex, Raycast, VS Code, Warp, Zed, LM Studio, Windsurf, and any MCP-compatible client.
This repo packages Macuse for agent clients: the Claude Desktop `.mcpb` installer and the agent plugin for Claude Code and Codex. The macOS app itself and the full docs live at macuse.app.
All three connect to the same local server. The plugin additionally installs skills — instructions that teach the agent how to use the tools correctly instead of discovering the parameter shapes by trial and error.
What Macuse Does
Two complementary ways for AI to work with your Mac. Everything runs locally — your data never leaves your device.
Native App Integrations
Your AI reads and writes directly to macOS apps through natural conversation.
3636625941a0OBSERVED · 2026-10-08Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.
claude mcp add macuse-mcp -- npx -y [email protected]
{
"mcpServers": {
"macuse-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
]
}
}
}Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | WARN |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- declared (2 observation(s))
- Shell
- declared (1 observation(s))
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (8)
HTTP_CODE=$(curl -s -o /dev/null -w '%{http_code}' --max-time 3 http://127.0.0.1:35729/mcp 2>/dev/null).biomeignore
.mcpbignore
.releaserc.json
.mcp.codex.json
@anthropic-ai/mcpb, @biomejs/biome, @semantic-release/changelog, @semantic-release/exec, @semantic-release/git, @semantic-release/npm, @types/node, semantic-release
Gates applied: no_behavioural_pass, no_license.
3636625941a0full audit observations/trust-audit/mcp-server/macuse-app__macuse-1.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-08 | 3636625941a0 | SAFE | B | 89 | first audit |
Questions
What is the Macuse MCP server?
MCP server for Mac — give AI direct control of Calendar, Mail, Notes, Reminders, Messages, and any Mac app via Computer Use, on-device. Works with Claude Desktop, Cursor, Codex, Raycast, VS Code, Warp, Zed, LM Studio.
Is Macuse safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.
What credentials does Macuse need?
No credential environment variables were found in its source, so it appears to need none.
How does Macuse run?
It speaks stdio, so it runs as a local process your client starts. It is published on npm as macuse-mcp at 1.3.0.
How current is this page?
The grade is for one exact copy of the source (3636625941a0), read on 2026-10-08. The repository is watched and re-audited when it changes.