Ollin's calculation engine can be queried from outside through a public MCP server.
MCP (Model Context Protocol) is the standard that lets an AI model use external tools. Any compatible agent can calculate a Human Design chart, Chaldean numbers, a natal chart or astrocartography lines.
https://us-central1-nova-e481b.cloudfunctions.net/mcp · Streamable HTTP, stateless, seven tools.
The server only calculates: it does not keep the birth data it receives and does not require an account.