A REST API

The Callr API is organized around REST principles, providing predictable, resource-oriented URLs, accepting form-encoded request bodies, returning JSON-encoded responses, and utilizing standard HTTP response codes and methods. This design ensures seamless integration and interaction with Callr's services.

OpenAPI compatibility

The Callr API is fully compatible with OpenAPI Specification 3.1 and JSON Schema, ensuring seamless integration with modern tools and workflows. By adhering to this latest specification, we aim to provide a robust and developer-friendly experience, enabling efficient integration and comprehensive documentation of our services.

Callr OpenAPI Specs

Format	URL
OpenAPI 3.1 YAML	https://api.callr.com/v2.0/openapi.yaml
OpenAPI 3.1 JSON	https://api.callr.com/v2.0/openapi.json
Postman Collection	Profile JSON file

📘
Readme Reference (recommended)
API Explorer

📑
Swagger UI
https://validator.swagger.io/?url=https%3A%2F%2Fapi.callr.com%2Fv2.0%2Fopenapi.json

🌐
Redocly Docs
https://api.callr.com/v2.0/static-docs.html

Base URL

All API endpoints are accessed via the base URL:

https://api.callr.com/v2.0/

SDKs

We do not provide SDKs for the REST API v2.0 for now. The OpenAPI compatibility let's you generate your own SDKs with generators.