What is the key difference between Outlook Contacts and Slack MCP Server?

Outlook Contacts belongs to the Communication category with local stdio execution, while Slack MCP Server belongs to the Communication category with local stdio execution.

How do I install Outlook Contacts or Slack MCP Server in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Outlook Contacts and Slack MCP Server free or paid?

Outlook Contacts operates under a Free / Open Source model (No auth required). Slack MCP Server operates under a Free / Open Source model (other).

Which MCP server has more tools and community activity?

Outlook Contacts lists 4 tools with 0 views and 0 GitHub stars. Slack MCP Server lists 7 tools with 1 views and 1,822 GitHub stars.

Can I use both Outlook Contacts and Slack MCP Server together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Outlook Contacts vs Slack MCP Server

In-depth architectural comparison of the Outlook Contacts and Slack MCP Server MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Outlook Contacts

Communication · Local stdio

Quality: 43/100 (Fair) | Auth: No auth required

Slack MCP Server

Communication · Local stdio

Quality: 57/100 (Good) | Auth: other

Verdict Summary: Choose Outlook Contacts if you need specialized Communication tools running via a local process. Choose Slack MCP Server if your workspace requires Communication integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Outlook Contacts when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: outlook_list_contacts, outlook_get_contact, outlook_search_people.

Explore Outlook Contacts Details

Choose Slack MCP Server when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: other (Free / Open Source).
You have access to required keys: SLACK_MCP_ADD_MESSAGE_TOOL.
Primary tools included: UserID, UserName, RealName.

Explore Slack MCP Server Details

Feature & Specification Comparison

Specification	O Outlook Contacts Communication	Slack MCP Server korotovsky Communication
Summary	Outlook Contacts (Microsoft 365) MCP Pack	The most powerful MCP server for Slack Workspaces.
Category & Scope	Communication	Communication

Tools & Capabilities Breakdown

Outlook Contacts Tools (4)

outlook_list_contacts

List contacts from an Outlook / Microsoft 365 address book. Returns compact contact records (name, email addresses, phone numbers, company, job title). Supports keyword search across the contact fields. Use to browse a user's saved Outlook / Microsoft 365 contacts.

outlook_get_contact

Get the full details of a single Outlook / Microsoft 365 contact by its ID, including display name, all email addresses, business and mobile phone numbers, home address, company name, job title, and department. Use after outlook_list_contacts to read a contact from the address book in full.

outlook_search_people

Search the people most relevant to the signed-in Outlook / Microsoft 365 user — colleagues, frequent email contacts, and people in their organization — ranked by relevance. Returns matching people with name, email addresses, job title, and company. Use to find a coworker or frequent contact by name…

outlook_get_profile

Get the signed-in user's Microsoft 365 / Outlook profile: display name, email address, and user principal name. Use to identify whose contacts and address book are connected.

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Outlook Contacts Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "outlook-contacts": {
      "command": "npx",
      "args": [
        "-y",
        "outlook-contacts"
      ]
    }
  }
}

Slack MCP Server Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "korotovsky-slack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/inspector"
      ],
      "env": {
        "SLACK_MCP_ADD_MESSAGE_TOOL": "YOUR_SLACK_MCP_ADD_MESSAGE_TOOL_HERE"
      }
    }
  }
}

Frequently Asked Questions

Outlook Contacts is categorized under Communication and uses a local stdio subprocess. In contrast, Slack MCP Server belongs to Communication using local stdio subprocess. Select Outlook Contacts when you need capabilities focused on communication and Slack MCP Server when you require tools for communication.

More alternatives to Outlook Contacts More alternatives to Slack MCP Server Communication category hub Canonical compare URL