Bazi MCP vs Freebazi

In-depth architectural comparison of the Bazi MCP and Freebazi 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.

Which MCP Server Should You Choose?

Choose Bazi MCP when:

• You need dedicated capabilities in the Spirituality & Esoterica domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: Accurate Bazi calculation from solar/lunar datetime, Supports gender and time configuration options, Returns detailed pillars with heavenly stems and earthly branches.

Explore Bazi MCP Details

Choose Freebazi when:

• You need dedicated capabilities in the Spirituality & Esoterica domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: compute_bazi_chart, search_cities.

Explore Freebazi Details

Feature & Specification Comparison

Specification	Bazi MCP cantian-ai Spirituality & Esoterica	Freebazi Spirituality & Esoterica
Summary	Provides comprehensive and accurate Bazi (Chinese Astrology) charting and analysis	Offline Bazi (八字, Four Pillars) chart: True Solar Time, Ten Gods, Shen Sha, luck pillars.
Category & Scope	Spirituality & Esoterica	Spirituality & Esoterica

Tools & Capabilities Breakdown

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).

{
  "mcpServers": {
    "cantian-ai-bazi-mcp": {
      "command": "npx",
      "args": [
        "bazi-mcp"
      ]
    }
  }
}

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

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