AsterNym MCP MCP server

An official MCP server provided by AsterNym that exposes its astrological calculation engine. It allows AI agents to compute Western natal charts, Chinese BaZi pillars, and AsterNym identities from birth data without requiring authentication or API keys.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by AsterNym

MCP endpoint (Streamable HTTP)

https://asternym.com/mcp

Vendor documentation

What you can do with it

Compute Western natal charts with planetary positions and aspects
Generate Chinese BaZi pillars and life path numbers
Calculate AsterNym identity from birth date and location
Provide JSON-formatted astrological readings to AI agents

Tools advertised by the last live check:

asternym_reading
asternym_bazi
asternym_bazi_hours
asternym_numerology
asternym_zodiac
asternym_natal

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http asternym-mcp https://asternym.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add asternym-mcp --url https://asternym.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable asternym-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "asternym-mcp": {
      "url": "https://asternym.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "asternym-mcp": {
      "type": "streamableHttp",
      "url": "https://asternym.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start asternym-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "asternym-mcp": {
      "type": "http",
      "url": "https://asternym.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http asternym-mcp https://asternym.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "asternym-mcp": {
      "url": "https://asternym.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "asternym-mcp": {
      "serverUrl": "https://asternym.com/mcp"
    }
  }
}

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