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v0 Platform API/API Reference/Chats

Resume Message

Resumes processing of a previously interrupted or incomplete message in a chat. Useful for continuing generation when a message was paused or stopped.

POST/v1/chats/{chatId}/messages/{messageId}/resume

Usage

TypeScript Example
import { v0 } from 'v0-sdk'

const result = await v0.chats.resume()

console.log(result)

API Signature

Request

Path Parameters

chatId: string

The unique identifier of the chat containing the message to resume. Provided as a path parameter.

messageId: string

The identifier of the specific message to resume. Provided as a path parameter.

Response

id: string

A unique identifier for the message.

object: 'message'

Fixed value identifying this object as a message.

content: string

The main text content of the message.

experimental_content?: any[] | any[][]

The parsed content of the message as an array structure containing AST nodes. This is an experimental field that may change.

createdAt: string

The ISO timestamp representing when the message was created.

updatedAt?: string

The ISO timestamp representing when the message was last updated.

type: 'message' | 'forked-block' | 'forked-chat' | 'open-in-v0' | 'refinement' | 'added-environment-variables' | 'added-integration' | 'deleted-file' | 'moved-file' | 'renamed-file' | 'edited-file' | 'replace-src' | 'reverted-block' | 'fix-with-v0' | 'auto-fix-with-v0' | 'sync-git'

Indicates the format or category of the message, such as plain text or code.

role: 'user' | 'assistant'

Specifies whether the message was sent by the user or the assistant.

finishReason?: 'stop' | 'length' | 'content-filter' | 'tool-calls' | 'error' | 'other' | 'unknown'

The reason why the message generation finished.

apiUrl: string

API URL to access this message via the API.

authorId: stringnull

The ID of the user who sent the message.

parentId?: stringnull

The ID of the parent message.

attachments?: object[]
url: string

The URL where the attachment file can be accessed.

name?: string

The original filename of the attachment.

contentType?: string

The MIME type of the attachment file (e.g., image/png, application/pdf).

size: number

The size of the attachment file in bytes.

content?: string

The base64-encoded content of the attachment file, if available.

type?: 'screenshot' | 'figma' | 'zip'

Optional v0-specific attachment type for enhanced processing.

chatId: string

The ID of the chat to which this message belongs.

Update Chat Version Files

Updates the source files of a specific chat version (block) manually. This allows editing generated files directly through the API.

Download version files

Download all files for a specific chat version as a zip or tarball archive. Use includeDefaultFiles=true to include all deployment files (package.json, configuration files, etc.) or false/omitted to return only the generated source files.