GetSession - Amazon Lex V1

If you are using Amazon Lex V2, refer to the Amazon Lex V2 guide instead.


If you are using Amazon Lex V1, we recommend upgrading your bots to Amazon Lex V2. We are no longer adding new features to V1 and strongly recommend using V2 for all new bots.


Returns session information for a specified bot, alias, and user ID.

Request Syntax

GET /bot/botName/alias/botAlias/user/userId/session/?checkpointLabelFilter=checkpointLabelFilter HTTP/1.1

URI Request Parameters

The request uses the following URI parameters.


The alias in use for the bot that contains the session data.

Required: Yes


The name of the bot that contains the session data.

Required: Yes


A string used to filter the intents returned in the recentIntentSummaryView structure.

When you specify a filter, only intents with their checkpointLabel field set to that string are returned.

Length Constraints: Minimum length of 1. Maximum length of 255.

Pattern: [a-zA-Z0-9-]+


The ID of the client application user. Amazon Lex uses this to identify a user's conversation with your bot.

Length Constraints: Minimum length of 2. Maximum length of 100.

Pattern: [0-9a-zA-Z._:-]+

Required: Yes

Request Body

The request does not have a request body.

Response Syntax

HTTP/1.1 200 Content-type: application/json { "activeContexts": [ { "name": "string", "parameters": { "string" : "string" }, "timeToLive": { "timeToLiveInSeconds": number, "turnsToLive": number } } ], "dialogAction": { "fulfillmentState": "string", "intentName": "string", "message": "string", "messageFormat": "string", "slots": { "string" : "string" }, "slotToElicit": "string", "type": "string" }, "recentIntentSummaryView": [ { "checkpointLabel": "string", "confirmationStatus": "string", "dialogActionType": "string", "fulfillmentState": "string", "intentName": "string", "slots": { "string" : "string" }, "slotToElicit": "string" } ], "sessionAttributes": { "string" : "string" }, "sessionId": "string" }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.


A list of active contexts for the session. A context can be set when an intent is fulfilled or by calling the PostContent, PostText, or PutSession operation.

You can use a context to control the intents that can follow up an intent, or to modify the operation of your application.

Type: Array of ActiveContext objects

Array Members: Minimum number of 0 items. Maximum number of 20 items.


Describes the current state of the bot.

Type: DialogAction object


An array of information about the intents used in the session. The array can contain a maximum of three summaries. If more than three intents are used in the session, the recentIntentSummaryView operation contains information about the last three intents used.

If you set the checkpointLabelFilter parameter in the request, the array contains only the intents with the specified label.

Type: Array of IntentSummary objects

Array Members: Minimum number of 0 items. Maximum number of 3 items.


Map of key/value pairs representing the session-specific context information. It contains application information passed between Amazon Lex and a client application.

Type: String to string map


A unique identifier for the session.

Type: String



Request validation failed, there is no usable message in the context, or the bot build failed, is still in progress, or contains unbuilt changes.

HTTP Status Code: 400


Internal service error. Retry the call.

HTTP Status Code: 500


Exceeded a limit.

HTTP Status Code: 429


The resource (such as the Amazon Lex bot or an alias) that is referred to is not found.

HTTP Status Code: 404

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: