You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
Revadike edited this page Oct 16, 2026
·
1 revision
POST /actions/BlockUserAjax
Blocks or unblocks all communication with another Steam user.
Rate limits
No known rate limit
Request
Authenticated: Yes
Method: POST
Host: steamcommunity.com
Path: /actions/BlockUserAjax
Form Data:
Name
Type
Required
Description
| sessionid | string | Yes | The value of the sessionid cookie |
| steamid | string | Yes | The 64-bit SteamID of the user to block or unblock |
| block | number | Yes | 1 to block all communication with the user, 0 to unblock |
Response
200 OK
Name
Type
Description
success
boolean
Whether the request was successful
400 Bad Request
The response body is false when the steamid is invalid.
Example
POST https://steamcommunity.com/actions/BlockUserAjax { sessionid: "a0b1c2d3e4f5g6h7i8j9klmn", steamid: "0", block: 1 }