Engine MCP
The same 400+ calculators accessible as MCP tools.
The Engine MCP surface exposes the same 400+ calculators as MCP tools. Connect the endpoint to any MCP-aware AI assistant and it can discover all available calculators via tools/list and invoke them via tools/call.
MCP endpoint
https://engine.astrocodex.ai/v1/mcprest_mcpHow it works
- 1
Obtain an Engine API key (or use OAuth scope rest_mcp) from your account settings.
- 2
Register the MCP endpoint (https://engine.astrocodex.ai/v1/mcp) in your AI client and send your API key in an X-API-Key header (an OAuth Bearer token with the rest_mcp scope also works).
- 3
The AI calls tools/list to discover all available calculators and their input schemas.
- 4
The AI calls tools/call with the chosen calculator name and birth-data inputs to compute results.
- 5
Results are returned in structured JSON with localised name fields (pass lang in the request body if needed).
Rate limits and monthly quotas apply per-plan, the same as the Engine REST API. The AI reasoning runs on your assistant's side and does not consume AstroCodex tokens.