Lua

Auth0 Server-to-Server Access Token (Client Credentials flow)

See more HTTP Examples

Demonstrates how to obtain an Auth0 access token using client credentials (client_id and client_secret).

This is just a matter of duplicating this CURL command:

curl --request POST
  --url 'https://chilkat.auth0.com/oauth/token' \
  --header 'content-type: application/json' \
  --data '{"grant_type":"client_credentials","client_id": "xxxx","client_secret": "xxxx","audience": "https://api.example.com/geocoding/v1/"}'

Lua

local chilkat = require("chilkat")

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

-- We want to duplicate this curl command:
--
-- curl --request POST
--   --url 'https://chilkat.auth0.com/oauth/token' \
--   --header 'content-type: application/json' \
--   --data '{"grant_type":"client_credentials","client_id": "my_client_id","client_secret": "my_client_secret","audience": "https://api.example.com/geocoding/v1/"}'

-- Build the JSON body of the request.
local json = chilkat.JsonObject.new()
json:update_string("grant_type", "client_credentials")
json:update_string("client_id", "AUTH0-CLIENT-ID")
json:update_string("client_secret", "AUTH0-CLIENT-SECRET")
json:update_string("audience", "https://api.example.com/geocoding/v1/")

-- IMPORTANT: You would use your own url.  You would not use "chilkat.auth0.com".
-- Instead you would use "your_name.auth0.com"
local http = chilkat.Http.new()
local resp = chilkat.HttpResponse.new()
local success = http:http_json("POST", "https://chilkat.auth0.com/oauth/token", json, "application/json", resp)
if not success then
    print(http.last_error_text)
    return
end

-- A 200 response status code indicates success.  In the success case, the response body
-- contains the JSON access token, such as:
-- {
--   "access_token": "eyJz93a...k4laUWw",
--   "token_type":"Bearer",
--   "expires_in":86400
-- }
--

print("response status code = " .. resp.status_code)

-- The repsonse is JSON if successful and also JSON for errors.
local jsonResp = chilkat.JsonObject.new()
jsonResp.emit_compact = false
jsonResp:load(resp.body_str)

if resp.status_code ~= 200 then
    -- The response body contains error information in JSON format.
    print(jsonResp:emit())

    -- An example of an error response:
    --         {
    --           "error": "access_denied",
    --           "error_description": "Client is not authorized to access \"https://api.example.com/geocoding/v1/\". You might probably want to create a \"client-grant\" associated to this API. See: https://auth0.com/docs/api/v2#!/Client_Grants/post_client_grants"
    --         }
    return
end

print("Success!")
print(jsonResp:emit())

-- A successful JSON response body looks like this:

-- {
--   "access_token": "eyJz93a...k4laUWw",
--   "token_type":"Bearer",
--   "expires_in":86400
-- }