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Full name: projects.locations.corroborateContent
Given an input text, it returns a score that evaluates the factuality of the text. It also extracts and returns claims from the text and provides supporting facts.
Endpoint
post
https://{service-endpoint}/v1beta1/{parent}:corroborateContent
Required. The resource name of the Location from which to corroborate text. The users must have permission to make a call in the project. Format: projects/{project}/locations/{location}.
Request body
The request body contains data with the following structure:
[[["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 2025-06-27 UTC."],[],[],null,["# Method: locations.corroborateContent\n\n**Full name**: projects.locations.corroborateContent\n\nGiven an input text, it returns a score that evaluates the factuality of the text. It also extracts and returns claims from the text and provides supporting facts. \n\n### Endpoint\n\npost `https:``/``/{service-endpoint}``/v1beta1``/{parent}:corroborateContent` \nWhere `{service-endpoint}` is one of the [supported service endpoints](/vertex-ai/docs/reference/rest#rest_endpoints).\n\n### Path parameters\n\n`parent` `string` \nRequired. The resource name of the Location from which to corroborate text. The users must have permission to make a call in the project. Format: `projects/{project}/locations/{location}`.\n\n### Request body\n\nThe request body contains data with the following structure:\nFields `facts[]` `object (`[Fact](/vertex-ai/docs/reference/rest/v1beta1/Fact)`)` \nOptional. Facts used to generate the text can also be used to corroborate the text.\n`parameters` `object (`[Parameters](/vertex-ai/docs/reference/rest/v1beta1/projects.locations/corroborateContent#Parameters)`)` \nOptional. Parameters that can be set to override default settings per request.\n`content` `object (`[Content](/vertex-ai/docs/reference/rest/v1beta1/Content)`)` \nOptional. Input content to corroborate, only text format is supported for now. \n\n### Response body\n\nResponse message for locations.corroborateContent.\n\nIf successful, the response body contains data with the following structure:\nFields `claims[]` `object (`[Claim](/vertex-ai/docs/reference/rest/v1beta1/projects.locations/corroborateContent#Claim)`)` \nClaims that are extracted from the input content and facts that support the claims.\n`corroborationScore` `number` \nconfidence score of corroborating content. value is \\[0,1\\] with 1 is the most confidence. \n\nParameters\n----------\n\nParameters that can be overrided per request.\nFields `citationThreshold` `number` \nOptional. Only return claims with citation score larger than the threshold. \n\nClaim\n-----\n\nClaim that is extracted from the input text and facts that support it.\nFields `factIndexes[]` `integer` \nIndexes of the facts supporting this claim.\n`startIndex` `integer` \nIndex in the input text where the claim starts (inclusive).\n`endIndex` `integer` \nIndex in the input text where the claim ends (exclusive).\n`score` `number` \nconfidence score of this corroboration."]]
