---
updatedAt: 2026-07-16T12:21:05.000Z
agentTools:
  siteIndex: https://developer.rmlconnect.net/llms.txt
  projectIndex: https://developer.rmlconnect.net/route-mobile-project/llms.txt
---

# Capability Check API

> **Use the Capability Check API to verify whether a phone number supports RCS.**

## Endpoint details

| Field                   | Value                                                                                                                                                                                                    |
| ----------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Endpoint URL            | [https://apis.rmlconnect.net/rcs/bot/v1/contactCapabilities?userContact=%2B91XXXXX⊥Name=XXXXXX](https://apis.rmlconnect.net/rcs/bot/v1/contactCapabilities?userContact=%2B917718963553\&botName=rml_jbm) |
| Method                  | `GET`                                                                                                                                                                                                    |
| Content-Type            | `application/json`                                                                                                                                                                                       |
| Authentication Required | Yes                                                                                                                                                                                                      |

## Authentication

Pass a valid access token in the `Authorization` header.

| Header        | Required | Description                                          |
| ------------- | -------- | ---------------------------------------------------- |
| Authorization | Yes      | Valid access token used to authenticate the request. |

## Request parameters

| Parameter   | Required | Description                                                                                         |
| ----------- | -------- | --------------------------------------------------------------------------------------------------- |
| userContact | Yes      | Phone number to check for RCS capability. Use URL encoding for the plus sign, such as `%2B91XXXXX`. |
| botName     | Yes      | RCS bot name used for the capability check.                                                         |

## Request example

```curl
curl --location 'https://apis.rmlconnect.net/rcs/bot/v1/contactCapabilities?userContact=%2B91XXXXX&botName=XXXXXX' \
--header 'Authorization: <access_token>' \
--header 'Content-Type: application/json'
```

## Responses

<Accordion title="200 OK — RCS Enabled" icon="fa-solid fa-circle-check">

The phone number supports RCS.

</Accordion>

<Accordion title="404 Not Found — RCS Disabled" icon="fa-solid fa-circle-exclamation">

The phone number does not support RCS.

</Accordion>

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