Delete Cache

PowerShell sample:

$token = "" # token from https://ci.appveyor.com/api-token
$accountName = "" # account name from project IRL (after project/")
$projectSlug = "" # project slug from project IRL (after account)
     
$headers = @{
  "Authorization" = "Bearer $token"
  "Content-type" = "application/json"
}
     
Invoke-RestMethod -Uri "https://ci.appveyor.com/api/projects/$accountName/$projectSlug/buildcache" -Headers $headers -Method DELETE

Curl sample:

set token=""
set accountName=""
set projectSlug=""

curl -X "DELETE" "https://ci.appveyor.com/api/projects/%accountName%/%projectSlug%/buildcache" -H "Content-type: application/json" -H "Authorization: Bearer %token%" --insecure

Small remark, the URL should be https://ci.appveyor.com/api-keys instead of https://ci.appveyor.com/api-token.

And in the cURL example the variables must be defined without set and expanded via $, not %...%.