[[["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 2025-08-28 UTC."],[],[],null,["# Interface StartChatSessionRequest (1.10.0)\n\nVersion latestkeyboard_arrow_down\n\n- [1.10.0 (latest)](/nodejs/docs/reference/vertexai/latest/vertexai/startchatsessionrequest)\n- [1.9.0](/nodejs/docs/reference/vertexai/1.9.0/vertexai/startchatsessionrequest)\n- [1.8.1](/nodejs/docs/reference/vertexai/1.8.1/vertexai/startchatsessionrequest)\n- [1.7.0](/nodejs/docs/reference/vertexai/1.7.0/vertexai/startchatsessionrequest)\n- [1.6.0](/nodejs/docs/reference/vertexai/1.6.0/vertexai/startchatsessionrequest)\n- [1.5.0](/nodejs/docs/reference/vertexai/1.5.0/vertexai/startchatsessionrequest)\n- [1.4.1](/nodejs/docs/reference/vertexai/1.4.1/vertexai/startchatsessionrequest)\n- [1.3.1](/nodejs/docs/reference/vertexai/1.3.1/vertexai/startchatsessionrequest)\n- [1.2.0](/nodejs/docs/reference/vertexai/1.2.0/vertexai/startchatsessionrequest)\n- [1.1.0](/nodejs/docs/reference/vertexai/1.1.0/vertexai/startchatsessionrequest)\n- [1.0.0](/nodejs/docs/reference/vertexai/1.0.0/vertexai/startchatsessionrequest)\n- [0.5.0](/nodejs/docs/reference/vertexai/0.5.0/vertexai/startchatsessionrequest)\n- [0.4.0](/nodejs/docs/reference/vertexai/0.4.0/vertexai/startchatsessionrequest)\n- [0.3.1](/nodejs/docs/reference/vertexai/0.3.1/vertexai/startchatsessionrequest)\n- [0.2.1](/nodejs/docs/reference/vertexai/0.2.1/vertexai/startchatsessionrequest) \nAll params passed to initiate multiturn chat via startChat. \n\nInheritance\n-----------\n\n[StartChatParams](/nodejs/docs/reference/vertexai/latest/vertexai/startchatparams) \\\u003e StartChatSessionRequest\n\nPackage\n-------\n\n[@google-cloud/vertexai](../overview.html)\n\nProperties\n----------\n\n### googleAuth\n\n googleAuth: GoogleAuth;\n\nThe Google Auth to use for the request.\n\n### location\n\n location: string;\n\nThe Google Cloud project location to use for the request.\n\n### project\n\n project: string;\n\nThe Google Cloud project to use for the request.\n\n### publisherModelEndpoint\n\n publisherModelEndpoint: string;\n\nThe publisher model endpoint to use for the request.\n\n### resourcePath\n\n resourcePath: string;\n\nThe resource path to use for the request.\n\n### systemInstruction\n\n systemInstruction?: string | Content;\n\nOptional. The user provided system instructions for the model. Note: only text should be used in parts of [Content](/nodejs/docs/reference/vertexai/latest/vertexai/content)"]]