head to head/Developer Tools

Open Ephemeris vs StackPick

Neck and neck on boosts. Profiles, pricing and deals below.

Open Ephemeris

Astrology MCP Server for Claude, ChatGPT & AI Agents

community boosts

⚡ 0

pricing

Freemium · $5 or $29 a month

what it is

Ask Claude or ChatGPT for a natal chart, transits, Vedic, BaZi, or a Human Design bodygraph — computed from NASA JPL data, with interactive charts in chat. Free to start, 150 credits, no card. Pay as you go or subscription available. Claude and ChatGPT already know how to hold a conversation. Draw my birth chart — March 21 1990, noon, London. No download, no API key — OAuth handles sign-in and creates your account on first connect. Open Ephemeris is an approved app in the MCP directory — any ChatGPT plan can install it. Using Claude Desktop, Cursor, or another client? Use the Claude Desktop config below — every plan works there.

StackPick

JSON API and MCP

community boosts

⚡ 0

pricing

Freemium

what it is

Free read-only JSON API and MCP server for StackPick rankings. Same scores and order as the site. Rankings are never paid.