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Claude OutlookSAFE

mcp/syedazharmbnr1/claude-outlook
MCP server by syedazharmbnr1 · Audited 2026-10-08
⚑ Report / re-scanSource ↗
Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
3 1r · 2w · 0d
Transport
stdio
License
—
Stars
46
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

This is a Model Context Protocol (MCP) tool that allows Claude to interact with Microsoft Outlook for macOS.

Features

  • Mail:
  • Read unread and regular emails
  • Search emails by keywords
  • Send emails with to, cc, and bcc recipients
  • Send HTML-formatted emails
  • Attach files to emails
  • List mail folders
  • Calendar:
  • View today's events
  • View upcoming events
  • Search for events
  • Create new calendar events
  • Contacts:
  • List contacts
  • Search contacts by name

Prerequisites

Installation

  1. Clone this repository:
git clone https://github.com/syedazharmbnr1/claude-outlook-mcp.git
cd claude-outlook-mcp
  1. Install dependencies:
bun install
  1. Make sure the script is executable:
chmod +x index.ts
  1. Update your Claude Desktop configuration:

Edit your claude_desktop_config.json file (located at ~/Library/Application Support/Claude/claude_desktop_config.json) to include this tool:

{
"mcpServers": {
"outlook-mcp": {
"command": "/Users/YOURUSERNAME/.bun/bin/bun",
"args": ["run", "/path/to/claude-outlook-mcp/index.ts"]
}
}
}

Make sure to replace YOURUSERNAME with your actual macOS username and adjust the path to where you cloned this repository.

  1. Restart Claude Desktop app
  1. Grant permissions:
  2. Go to System Preferences > Privacy & Security > Privacy
  3. Give Terminal (or your preferred terminal app) access to Accessibility features
  4. You may see permission prompts whe
Read from source at commit 2a2697bca8a6OBSERVED · 2026-10-08
02

Connect

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-code
claude mcp add claude-outlook-mcp -- npx -y [email protected]
claude-desktop
{
  "mcpServers": {
    "claude-outlook-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ]
    }
  }
}
03

Exposed tools (3)

1 read · 2 write · 0 destructive.

ToolRiskDescription
outlook_calendarwriteInteract with Microsoft Outlook for macOS calendar - view, create, and manage events
outlook_contactsreadSearch and retrieve contacts from Microsoft Outlook for macOS
outlook_mailwriteInteract with Microsoft Outlook for macOS - read, search, send, and manage emails
04

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.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
none-observed
Shell
none-observed
Dependencies
not all pinned
Secrets in source
none-found

Findings (2)

LOWInventory / provenance · inv.no_license · CWE-1104
Why it matters. no LICENSE file and no repo licence
Fix. add a licence
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
package.json
@jxa/global-type, @jxa/run, @modelcontextprotocol/sdk, run-applescript, @types/bun, @types/node
Why it matters. 6 dependency range(s) float
Fix. pin exact versions or ship a lockfile

Gates applied: no_behavioural_pass, no_license.

Audited 2026-10-08 · audit v0.4.1 · source sha 2a2697bca8a6full audit observations/trust-audit/mcp-server/syedazharmbnr1__claude-outlook.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-082a2697bca8a6SAFEB89first audit
06

Questions

What tools does Claude Outlook expose?

3 in total: 1 read-only, 2 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is Claude Outlook 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 Claude Outlook need?

No credential environment variables were found in its source, so it appears to need none.

How does Claude Outlook run?

It speaks stdio, so it runs as a local process your client starts. It is published on npm as claude-outlook-mcp at 1.0.0.

How current is this page?

The grade is for one exact copy of the source (2a2697bca8a6), read on 2026-10-08. The repository is watched and re-audited when it changes.

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