Koskamo

Astral MCP

A local-first Model Context Protocol server that provides AI agents with precision-audited astrological calculations. It computes natal charts, transits, synastry, and moon phases using two independent ephemerides for cross-verification. The server requires no API keys, accounts, or internet connectivity for core functions, ensuring privacy and immediate usability via npx.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Astral MCP logo, by David MosiahCommunity listingLocal stdioSource reviewed; not executedPublished by David Mosiah
Vendor documentation

What you can do with it

  • Generate natal charts from birth data
  • Calculate astrological transits
  • Perform synastry compatibility analysis
  • Determine current moon phases

Source and maintenance

Community listingRegistry 0.2.0MIT
mcp-registry: io.github.davidmosiah/astral-mcp@0.2.0Source repositoryProject website
Last repository push
Latest release
v0.3.2
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

astral-mcp 0.2.0

npm
astral-mcp package definition
{
  "version": "0.2.0",
  "transport": "stdio",
  "identifier": "astral-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "ASTRAL_MCP_TRANSPORT",
      "format": "string",
      "description": "Transport to run. Defaults to stdio. Set to http to expose a streamable HTTP endpoint instead."
    },
    {
      "name": "ASTRAL_MCP_HOST",
      "format": "string",
      "description": "Host to bind when ASTRAL_MCP_TRANSPORT=http. Defaults to 127.0.0.1."
    },
    {
      "name": "ASTRAL_MCP_PORT",
      "format": "string",
      "description": "Port to bind when ASTRAL_MCP_TRANSPORT=http. Defaults to 3000."
    },
    {
      "name": "ASTRAL_MCP_ALLOWED_ORIGIN",
      "format": "string",
      "description": "Allowed CORS origin for the HTTP transport. Defaults to the bound host:port."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · repository · passed · metadata changed · updated
  • · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before 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.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "astral-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "astral-mcp@0.2.0"
      ],
      "env": {
        "ASTRAL_MCP_TRANSPORT": "<YOUR_ASTRAL_MCP_TRANSPORT>",
        "ASTRAL_MCP_HOST": "<YOUR_ASTRAL_MCP_HOST>",
        "ASTRAL_MCP_PORT": "<YOUR_ASTRAL_MCP_PORT>",
        "ASTRAL_MCP_ALLOWED_ORIGIN": "<YOUR_ASTRAL_MCP_ALLOWED_ORIGIN>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "astral-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "astral-mcp@0.2.0"
      ],
      "env": {
        "ASTRAL_MCP_TRANSPORT": "<YOUR_ASTRAL_MCP_TRANSPORT>",
        "ASTRAL_MCP_HOST": "<YOUR_ASTRAL_MCP_HOST>",
        "ASTRAL_MCP_PORT": "<YOUR_ASTRAL_MCP_PORT>",
        "ASTRAL_MCP_ALLOWED_ORIGIN": "<YOUR_ASTRAL_MCP_ALLOWED_ORIGIN>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "astral-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "astral-mcp@0.2.0"
      ],
      "env": {
        "ASTRAL_MCP_TRANSPORT": "<YOUR_ASTRAL_MCP_TRANSPORT>",
        "ASTRAL_MCP_HOST": "<YOUR_ASTRAL_MCP_HOST>",
        "ASTRAL_MCP_PORT": "<YOUR_ASTRAL_MCP_PORT>",
        "ASTRAL_MCP_ALLOWED_ORIGIN": "<YOUR_ASTRAL_MCP_ALLOWED_ORIGIN>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "astral-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "astral-mcp@0.2.0"
      ],
      "env": {
        "ASTRAL_MCP_TRANSPORT": "<YOUR_ASTRAL_MCP_TRANSPORT>",
        "ASTRAL_MCP_HOST": "<YOUR_ASTRAL_MCP_HOST>",
        "ASTRAL_MCP_PORT": "<YOUR_ASTRAL_MCP_PORT>",
        "ASTRAL_MCP_ALLOWED_ORIGIN": "<YOUR_ASTRAL_MCP_ALLOWED_ORIGIN>"
      }
    }
  }
}

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