This response is validated by the Dialogflow server. If validation fails, an error will be returned in the QueryResult.diagnostic_info field. Setting JSON fields to an empty value with the wrong type is a common error. To avoid this error:
Optional. The text response message intended for the end-user. It is recommended to use fulfillmentMessages.text.text[0] instead. When provided, Dialogflow uses this field to populate QueryResult.fulfillment_text sent to the integration or API caller.
Optional. The rich response messages intended for the end-user. When provided, Dialogflow uses this field to populate QueryResult.fulfillment_messages sent to the integration or API caller.
source
string
Optional. A custom field used to identify the webhook source. Arbitrary strings are supported. When provided, Dialogflow uses this field to populate QueryResult.webhook_source sent to the integration or API caller.
Optional. This field can be used to pass custom data from your webhook to the integration or API caller. Arbitrary JSON objects are supported. When provided, Dialogflow uses this field to populate QueryResult.webhook_payload sent to the integration or API caller. This field is also used by the Google Assistant integration for rich response messages. See the format definition at Google Assistant Dialogflow webhook format
Optional. The collection of output contexts that will overwrite currently active contexts for the session and reset their lifespans. When provided, Dialogflow uses this field to populate QueryResult.output_contexts sent to the integration or API caller.
Optional. Additional session entity types to replace or extend developer entity types with. The entity synonyms apply to all languages and persist for the session. Setting this data from a webhook overwrites the session entity types that have been set using detectIntent, streamingDetectIntent or SessionEntityType management methods.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-05 UTC."],[[["This content defines the response structure for webhook calls in Dialogflow, which is validated by the Dialogflow server, and errors during validation are returned in the `QueryResult.diagnostic_info` field."],["The JSON response includes fields like `fulfillmentText`, `fulfillmentMessages`, `source`, `payload`, `outputContexts`, `followupEventInput`, and `sessionEntityTypes` that provide data to integrations or API callers."],["When using JSON for empty fields, use `\"\"` for empty strings, `{}` or `null` for empty objects, and `[]` or `null` for empty arrays to prevent validation errors."],["The `payload` field allows for passing custom JSON data and supports rich response messages via the Google Assistant integration."],["The fields `outputContexts` and `sessionEntityTypes` allow for managing the conversation state and context, and allows for overwriting contexts or entities for a given session."]]],[]]