Response headers Social Media, Chat and Messaging
The following tables display the standard response headers that are returned with each API response:
| Standard response field name | Description | 
|---|---|
| sunset | This field will be populated with the deprecation details. By default the value is 
 n/a . | 
| api-version | Indicates the API version you have used. | 
| quota-interval | Used to specify an integer (for example, 1, 2, 5, 60, and so on) that will be paired with the 
 quota-time-unit 
 you specify (minute, hour, day, week, or month) to determine a time period during which the quota use is calculated. 
 quota-time-unit 
 of hour means that the quota will be calculated over the course of 24 hours. | 
| quota-limit | Number of API calls an user can make within a given time period. | 
| quota-reset-UTC | All quota times are set to the Coordinated Universal Time (UTC) time zone. | 
| quota-time-unit | Used to specify the unit of time applicable to the quota. 
 quota-time-unit 
 of hour means that the quota will be calculated over the course of 24 hours. | 
| quota-used | Number of API calls made within the quota. | 
| strict-transport-security | The HTTP 
 Strict-Transport-Security 
 (HSTS) response header lets a website tell browsers that it should only be accessed using HTTPS, instead of using HTTP. All present and future subdomains will be HTTPS for a maximum of 1 year and access is blocked to pages or sub domains that can only be served over HTTP including HSTS preload lists of web browsers. Strict-Transport-Security: max-age=31536000; includeSubDomains; preload . | 
| Access control field name | Description | 
| access-control-allow-credentials | Tells browsers whether to expose the response to frontend JavaScript when the request's credentials mode ( Request.credentials ) is 
 include . Request.credentials ) is 
 include , browsers will only expose the response to frontend JavaScript if the 
 Access-Control-Allow-Credentials 
 value is 
 true . Boolean. | 
| access-control-allow-origin | Indicates whether the response can be shared with requesting code from the given origin. | 
| access-control-allow-headers | Used in response to a pre-flight request which includes the 
 Access-Control-Request-Headers 
 to indicate which HTTP headers can be used during the actual request. | 
| access-control-max-age | Indicates how long the results of a pre-flight request (that is the information contained in the 
 Access-Control-Allow-Methods 
 and 
 Access-Control-Allow-Headers 
 headers) can be cached. | 
| access-control-allow-methods | Indicates which HTTP methods are allowed on a particular endpoint for cross-origin requests. 
 GET , 
 PUT , 
 POST , 
 DELETE . | 
| content-length | The Content-Length entity header indicates the size of the entity-body, in bytes, sent to the recipient. | 
| content-type | The Content-Type entity header the client what the content type of the returned content actually is. | 
