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Amazon SP-API Request an LWA access token

See more Amazon SP-API Examples

Request an LWA access token, make a secure HTTP POST to the LWA authentication server (https://api.amazon.com/auth/o2/token)

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$http = New-Object Chilkat.Http

# Implements the following CURL command:

# curl -X POST https://example.com/auth/o2/token \
#   -H "Host: api.amazon.com" \
#   -H "Content-Type: application/x-www-form-urlencoded;charset=UTF-8" \
#   -d "grant_type=refresh_token" \
#   -d "refresh_token=Aztr|..." \
#   -d "client_id=foodev" \
#   -d "client_secret=Y76SDl2F"

# Use the following online tool to generate HTTP code from a CURL command
# Convert a cURL Command to HTTP Source Code

$req = New-Object Chilkat.HttpRequest
$req.AddParam("grant_type","refresh_token")
$req.AddParam("refresh_token","Aztr|...")
$req.AddParam("client_id","foodev")
$req.AddParam("client_secret","Y76SDl2F")

$req.AddHeader("Host","api.amazon.com")

$req.HttpVerb = "POST"
$req.ContentType = "application/x-www-form-urlencoded"

$resp = New-Object Chilkat.HttpResponse
$success = $http.HttpReq("https://api.amazon.com/auth/o2/token",$req,$resp)
if ($success -eq $false) {
    $($http.LastErrorText)
    exit
}

$statusCode = $resp.StatusCode
$("Status Code = " + $statusCode)

$json = New-Object Chilkat.JsonObject
$json.Load($resp.BodyStr)

$json.EmitCompact = $false
$($json.Emit())

if ($statusCode -ne 200) {
    $("Failed.")
    exit
}

# Success returns this JSON:

# {
#   "access_token": "Atza|...",
#   "refresh_token": "Atzr|...",
#   "token_type": "bearer",
#   "expires_in": 3600
# }

# Save the JSON token to a file for use in subsequent calls.
# (this example is passing a relative file path.  You don't need to save to a file
# if, for example, you keep the access token in-memory for subsequent use...)
$success = $json.WriteFile("qa_data/tokens/sp_api_lwa_token.json")

$("access_token: " + $json.StringOf("access_token"))
$("Success.")