FreeClimb Docs

SMS

Send and receive SMS messages in your applications with FreeClimb API.

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Node

Java

C#

Python

Build Your App Two-factor Authentication Error Codes Learn More

Voice

Add voice calling capabilities to your applications using FreeClimb API and PerCL.

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Node

Java

C#

Python

Ruby

PHP

Build Your App Advanced Features Error Codes Learn More

For more information on SMS, see our Carrier SMS Surcharge and Fees page. For pricing information, see our API Pricing page.