Wildberries API TypeScript SDK / SellerMessageRequest

Interface: SellerMessageRequest

Defined in: types/communications.types.ts:574

Request body for CommunicationsModule.createSellerMessage.

Multipart/form-data — the SDK builds the FormData internally from these fields.

Deadline 2026-06-04: WB API now requires the NEW format of replySign (pattern <version>:<UUID>:<signature>). Old-format values are rejected with HTTP 400. Refresh replySign via CommunicationsModule.getSellerChats before each send.

Since

3.13.0

Properties

Property	Type	Description	Defined in
<a id="replysign"></a> replySign	string	Chat signature from getSellerChats() (preferred) or from getSellerEvents() when isNewChat: true. Format <version>:<UUID>:<crypto-signature> (~135 chars). Hard deadline 2026-06-04: old-format values rejected by WB API.	types/communications.types.ts:581
<a id="message"></a> message?	string	Message text. Max 1000 UTF-16 code units (BMP characters count as 1; surrogate-pair emoji count as 2). For most plain text and Cyrillic content this matches char count.	types/communications.types.ts:586
<a id="file"></a> file?	( | Blob | { filename: string; content: Buffer; })[]	Attachment files. Each ≤ 5MB; total ≤ 30MB. Formats: JPEG, PDF, PNG. Accept either Blob (browser/Node 18+ global) or Buffer (Node-only legacy) with a filename hint via tuple shape. The SDK normalizes both to FormData.	types/communications.types.ts:593