What is the key difference between KaiCalls and Prelim?

KaiCalls belongs to the Developer Tools category with local stdio execution, while Prelim belongs to the Developer Tools category with cloud HTTP/SSE execution.

How do I install KaiCalls or Prelim 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 KaiCalls and Prelim free or paid?

KaiCalls operates under a Free / Open Source model (No auth required). Prelim operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

KaiCalls lists 0 tools with 0 views and 0 GitHub stars. Prelim lists 0 tools with 0 views and 0 GitHub stars.

Can I use both KaiCalls and Prelim 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.

How do I install KaiCalls or Prelim in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are KaiCalls and Prelim free to use, or do they require API keys?

KaiCalls is listed under a Free / Open Source model with No auth required . Prelim operates under a Free / Open Source model with No auth required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both KaiCalls and Prelim at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both kaicalls and prelim as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, KaiCalls has a Quality Score of 27 /100 ( Emerging ) with 0 views, 0 installs, and 0 GitHub stars. Prelim holds a Quality Score of 44 /100 ( Fair ) with 0 views, 0 installs, and 0 GitHub stars.

Side-by-Side Model Context Protocol Comparison

KaiCalls vs Prelim

In-depth architectural comparison of the KaiCalls and Prelim 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

KaiCalls

Developer Tools · Local stdio

Quality: 27/100 (Emerging) | Auth: No auth required

Prelim

Developer Tools · Remote HTTP/SSE

Quality: 44/100 (Fair) | Auth: No auth required

Verdict Summary: Choose KaiCalls if you need specialized Developer Tools tools running via a local process. Choose Prelim if your workspace requires Developer Tools integration with remote web transport. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose KaiCalls when:

You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore KaiCalls Details

Choose Prelim when:

You need dedicated capabilities in the Developer Tools domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Prelim Details

Feature & Specification Comparison

Specification	K KaiCalls Developer Tools	P Prelim Developer Tools
Summary	AI phone secretary: place calls, read transcripts, list calls, agents, and stats.	Read AI preliminary phone screens — your roles, candidate scores, transcripts, and analytics.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

KaiCalls Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Prelim Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

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).

KaiCalls Configuration

mcpServers (Claude Desktop / Cursor)

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

Prelim Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "prelim": {
      "url": "https://prelim.chat"
    }
  }
}

Frequently Asked Questions

KaiCalls is categorized under Developer Tools and uses a local stdio subprocess. In contrast, Prelim belongs to Developer Tools using remote streaming HTTP/SSE transport. Select KaiCalls when you need capabilities focused on developer tools and Prelim when you require tools for developer tools.

More alternatives to KaiCalls More alternatives to Prelim Developer Tools category hub

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