# Capability lookup

This method is asynchronous - it immediately returns the requested Capability registration. Capability check is then delivered as a callback to registered webhooks with trigger CAPABILITY for every reachable channel.

Endpoint: POST /v1/projects/{project_id}/capability:query
Version: 1.0
Security: Basic, oAuth2

## Path parameters:

  - `project_id` (string, required)
    The unique ID of the project. You can find this on the Sinch Dashboard.

## Request fields (application/json):

  - `app_id` (string, required)
    The ID of the app to use for capability lookup.
    Example: "{APP_ID}"

  - `recipient` (object, required)
    Identifies the recipient.

  - `request_id` (string)
    ID for the asynchronous response, will be generated if not set.
Currently this field is not used for idempotency.

## Response 200 fields (application/json):

  - `app_id` (string)
    The ID of the app to use for capability lookup.

  - `recipient` (object)
    Identifies the recipient.

  - `request_id` (string)
    ID for the asynchronous response, will be generated if not set.

## Response 400 fields (application/json):

  - `error` (object)

  - `error.code` (integer)

  - `error.details` (array)

  - `error.details.type_url` (string)

  - `error.details.value` (string)

  - `error.message` (string)

  - `error.status` (string)