Check RCS capability

Use this endpoint to verify whether the phone numbers in a given list can receive RCS messages from the specified sender. You can check up to 500 phone numbers in a single request; however, for improved efficiency, performance, and response time, we recommend using smaller batches of 1 to 10 numbers in a single request. This synchronous API is typically used for routing purposes when verifying a number’s RCS capability immediately before sending a message. This API supports up to a 100 requests per second. For bulk database cleanup, we recommend to use the asynchronous Capability Check (CapCheck) API.

The response will provide the list of capability statuses for each phone number individually. Ensure the sender is configured and launched on the mobile network/carrier that manages the phone numbers being tested for RCS capability. If the sender is not launched on the network, the capability check request will always return a negative status for the tested phone numbers.