--- title: Token Introspection (Refresh Token) description: The POST /{{envID}}/as/introspect endpoint returns information about the refresh token. component: pingone-api page_id: pingone-api:auth:openid-connect-oauth-2/token-introspection-refresh-token canonical_url: https://developer.pingidentity.com/pingone-api/auth/openid-connect-oauth-2/token-introspection-refresh-token.html section_ids: prerequisites: Prerequisites headers: Headers body: Body example-request: Example Request example-response: Example Response --- # Token Introspection (Refresh Token) ## ```none POST {{authPath}}/{{envID}}/as/introspect ``` The `POST /{{envID}}/as/introspect` endpoint returns information about the refresh token. You need to authenticate using the client credentials for the client that was issued the token. Note that the application's `tokenEndpointAuthMethod` property value determines how you authenticate. The `tokenEndpointAuthMethod` property supports these options: `CLIENT_SECRET_BASIC`, `CLIENT_SECRET_JWT`, `PRIVATE_KEY_JWT`, `CLIENT_SECRET_POST`, and `NONE`. In the sample request shown here, the application's `tokenEndpointAuthMethod` value is `CLIENT_SECRET_BASIC`, which requires the `Authorization: Basic` HTTP header and a Base64-encoded representation of "username:password" in the request, in which the username is the `client_id` and the password is the `client_secret`. If the application's `tokenEndpointAuthMethod` value is `CLIENT_SECRET_JWT`, the token endpoint uses a JWT signed by the application's client secret to authenticate the request. For information about creating the JWT and the claims in the JWT, refer to [Create a client secret JWT](../auth-config-options/create-a-client-secret-jwt.html). Token requests that use this auth method require the `client_assertion` and `client_assertion_type` OAuth properties to specify the JWT: ```none curl --location --request POST '{{authPath}}/{{envID}}/as/introspect' \ --header 'Content-Type: application/x-www-form-urlencoded' \ --data-urlencode 'client_assertion={{clientSecretJWT}}' \ --data-urlencode 'client_assertion_type=urn:ietf:params:oauth:client-assertion-type:jwt-bearer' --data-urlencode 'token={{refreshToken}}' ``` If the application's `tokenEndpointAuthMethod` value is `PRIVATE_KEY_JWT`, the token endpoint uses a JWT signed by an external private key file to authenticate the request. For information about creating the JWT and the claims in the JWT, refer to [Create a private key JWT](../auth-config-options/create-a-private-key-jwt.html). Token requests that use this auth method require the `client_assertion` and `client_assertion_type` OAuth properties to specify the JWT: ```none curl --location --request POST '{{authPath}}/{{envID}}/as/introspect' \ --header 'Content-Type: application/x-www-form-urlencoded' \ --data-urlencode 'client_assertion={{privateKeyJWT}}' \ --data-urlencode 'client_assertion_type=urn:ietf:params:oauth:client-assertion-type:jwt-bearer' --data-urlencode 'token={{refreshToken}}' ``` If the application's `tokenEndpointAuthMethod` value is `CLIENT_SECRET_POST`, the request does not need an `Authorization` header, and the `client_id` and `client_secret` property values are submitted in the request body: ```none curl --location --request POST '{{authPath}}/{{envID}}/as/introspect' \ --header 'Content-Type: application/x-www-form-urlencoded' \ --data-urlencode 'client_id={{appID}}' \ --data-urlencode 'client_secret={{appSecret}}'\ --data-urlencode 'token={{refreshToken}}' ``` If the application's `tokenEndpointAuthMethod` value is `NONE`, the request requires the `client_id` property value in the request body and does not require an `Authorization` header: ```none curl --location --request POST '{{authPath}}/{{envID}}/as/introspect' \ --header 'Content-Type: application/x-www-form-urlencoded' \ --data-urlencode 'client_id={{appID}}' \ --data-urlencode 'token={{refreshToken}}' ``` The `exp` claim in a refresh token is expressed in epoch seconds (time in seconds since January 01, 1970), and resolves to a specific date and time. The value is calculated based on the lesser of `current time + refreshTokenDuration` and `original token minting time + refreshTokenRollingDuration`. The "original token minting time" is the time the user last authenticated using an `authorization_code` grant type on the `/token` endpoint and received the initial refresh token. For more information about the `refreshTokenDuration` and `refreshTokenRollingDuration` OpenID Connect application properties, refer to the [Applications OIDC settings data model](../../platform/applications/applications-1.html). ### Prerequisites * Use the [Token](token-intro.html) endpoint to create an `refreshToken`. > **Collapse: Request Model** > > | Property | Type | Required? | > | ----------------------- | ------ | --------- | > | `client_id` | String | Optional | > | `client_secret` | String | Optional | > | `client_assertion` | String | Optional | > | `client_assertion_type` | String | Optional | > | `token` | String | Required | > > Refer to the [OpenID Connect/OAuth2 data model](../openid-connect-oauth-2.html) for full property descriptions. ### Headers Authorization Content-Type      application/x-www-form-urlencoded ### Body urlencoded ( application/x-www-form-urlencoded ) | Key | Value | | ----- | ---------------- | | token | {{refreshToken}} | ## ### Example Request * cURL * C# * Go * HTTP * Java * jQuery * NodeJS * Python * PHP * Ruby * Swift ```shell curl --location --globoff '{{authPath}}/{{envID}}/as/introspect' \ --header 'Content-Type: application/x-www-form-urlencoded' \ --header 'Authorization: Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0=' \ --data-urlencode 'token={{refreshToken}}' ``` ```csharp var options = new RestClientOptions("{{authPath}}/{{envID}}/as/introspect") { MaxTimeout = -1, }; var client = new RestClient(options); var request = new RestRequest("", Method.Post); request.AddHeader("Content-Type", "application/x-www-form-urlencoded"); request.AddHeader("Authorization", "Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0="); request.AddParameter("token", "{{refreshToken}}"); RestResponse response = await client.ExecuteAsync(request); Console.WriteLine(response.Content); ``` ```golang package main import ( "fmt" "strings" "net/http" "io" ) func main() { url := "{{authPath}}/{{envID}}/as/introspect" method := "POST" payload := strings.NewReader("token=%7B%7BrefreshToken%7D%7D") client := &http.Client { } req, err := http.NewRequest(method, url, payload) if err != nil { fmt.Println(err) return } req.Header.Add("Content-Type", "application/x-www-form-urlencoded") req.Header.Add("Authorization", "Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0=") res, err := client.Do(req) if err != nil { fmt.Println(err) return } defer res.Body.Close() body, err := io.ReadAll(res.Body) if err != nil { fmt.Println(err) return } fmt.Println(string(body)) } ``` ```http POST /{{envID}}/as/introspect HTTP/1.1 Host: {{authPath}} Content-Type: application/x-www-form-urlencoded Authorization: Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0= token=%7B%7BrefreshToken%7D%7D ``` ```java OkHttpClient client = new OkHttpClient().newBuilder() .build(); MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded"); RequestBody body = RequestBody.create(mediaType, "token={{refreshToken}}"); Request request = new Request.Builder() .url("{{authPath}}/{{envID}}/as/introspect") .method("POST", body) .addHeader("Content-Type", "application/x-www-form-urlencoded") .addHeader("Authorization", "Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0=") .build(); Response response = client.newCall(request).execute(); ``` ```javascript var settings = { "url": "{{authPath}}/{{envID}}/as/introspect", "method": "POST", "timeout": 0, "headers": { "Content-Type": "application/x-www-form-urlencoded", "Authorization": "Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0=" }, "data": { "token": "{{refreshToken}}" } }; $.ajax(settings).done(function (response) { console.log(response); }); ``` ```javascript var request = require('request'); var options = { 'method': 'POST', 'url': '{{authPath}}/{{envID}}/as/introspect', 'headers': { 'Content-Type': 'application/x-www-form-urlencoded', 'Authorization': 'Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0=' }, form: { 'token': '{{refreshToken}}' } }; request(options, function (error, response) { if (error) throw new Error(error); console.log(response.body); }); ``` ```python import requests url = "{{authPath}}/{{envID}}/as/introspect" payload = 'token=%7B%7BrefreshToken%7D%7D' headers = { 'Content-Type': 'application/x-www-form-urlencoded', 'Authorization': 'Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0=' } response = requests.request("POST", url, headers=headers, data=payload) print(response.text) ``` ```php setUrl('{{authPath}}/{{envID}}/as/introspect'); $request->setMethod(HTTP_Request2::METHOD_POST); $request->setConfig(array( 'follow_redirects' => TRUE )); $request->setHeader(array( 'Content-Type' => 'application/x-www-form-urlencoded', 'Authorization' => 'Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0=' )); $request->addPostParameter(array( 'token' => '{{refreshToken}}' )); try { $response = $request->send(); if ($response->getStatus() == 200) { echo $response->getBody(); } else { echo 'Unexpected HTTP status: ' . $response->getStatus() . ' ' . $response->getReasonPhrase(); } } catch(HTTP_Request2_Exception $e) { echo 'Error: ' . $e->getMessage(); } ``` ```ruby require "uri" require "net/http" url = URI("{{authPath}}/{{envID}}/as/introspect") http = Net::HTTP.new(url.host, url.port); request = Net::HTTP::Post.new(url) request["Content-Type"] = "application/x-www-form-urlencoded" request["Authorization"] = "Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0=" request.body = "token=%7B%7BrefreshToken%7D%7D" response = http.request(request) puts response.read_body ``` ```swift let parameters = "token=%7B%7BrefreshToken%7D%7D" let postData = parameters.data(using: .utf8) var request = URLRequest(url: URL(string: "{{authPath}}/{{envID}}/as/introspect")!,timeoutInterval: Double.infinity) request.addValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type") request.addValue("Basic e3thcHBJRH19Ont7YXBwU2VjcmV0fX0=", forHTTPHeaderField: "Authorization") request.httpMethod = "POST" request.httpBody = postData let task = URLSession.shared.dataTask(with: request) { data, response, error in guard let data = data else { print(String(describing: error)) return } print(String(data: data, encoding: .utf8)!) } task.resume() ``` ### Example Response 200 OK ```json { "active": true, "exp": 1556823764, "token_type": "Bearer" } ```