# OpenFate Bazi MCP (MCP server)

> OpenFate Bazi MCP is an MCP server that adds tools to AI assistants such as Claude Desktop, Claude Code and Cursor. OpenFate Bazi MCP with True Solar Time, Four Pillars, Da Yun, and branch interactions. It has 157 GitHub stars, is released under the MIT license and runs locally with npx -y @openfate/bazi-mcp.

OpenFate Bazi MCP is a Model Context Protocol server for accurate Bazi / Four Pillars calculation inside AI agents such as Claude Desktop, Cursor, Cline, and Continue.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/openfate-ai/openfate-mcp |
| GitHub stars | 157 |
| License | MIT |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: @openfate/bazi-mcp |
| Remote URL | none |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Other |
| Latest release | v0.3.1 (Sep 20, 2026) |
| Last commit | Sep 20, 2026 |
| MCP registry name | io.github.openfate-ai/bazi-mcp |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "openfate-bazi-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@openfate/bazi-mcp"
      ]
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --transport stdio openfate-bazi-mcp -- npx -y @openfate/bazi-mcp
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "openfate-bazi-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@openfate/bazi-mcp"
      ]
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "openfate-bazi-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@openfate/bazi-mcp"
      ]
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

## Tools

- `calculate_bazi_chart`: Calculates a deterministic Bazi chart.
- `year`
- `month`
- `hour`
- `minute`
- `second`
- `gender`
- `longitude`
- `timezone`
- `detect_bazi_interactions`: Detects raw Earthly Branch relationship occurrences for a natal chart, with optional annual and Da Yun branches.
- `calculate_true_solar_time`: Calculates True Solar Time directly.
- `reverse_bazi_to_solar_times`: Finds possible Gregorian datetimes for a four-pillar Bazi string.
- `get_openfate_bazi_policy`: Returns OpenFate calculation policy:
- `get_openfate_bazi_resources`: Returns canonical OpenFate links for charting, readings, compatibility, wealth, true solar time, and llms.txt.

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