API Reference
API Overview
Introduction to the Castor Flow REST API.
The Castor Flow API is a REST API that gives you programmatic access to your leads, pipeline data, and CRM functionality.
Base URL
https://api.castorflow.com/v1Authentication
All requests require an API key passed in the Authorization header. See the Authentication guide for how to generate a key.
Response format
All responses are JSON. Successful responses return HTTP 200 with a data object. Errors return an appropriate HTTP status code with an error message.
// Success
{ "data": { ... } }
// Error
{ "error": "Business not found", "code": "NOT_FOUND" }Available resources
- /businesses — your saved leads
- /interactions — contact history entries
- /pipeline — stage configuration