Use a bare-bones client and the command you need to make an API call.

import { ChatServiceClient, SendChatMessageCommand } from "@rivet-gg/chat"; // ES Modules import
// const { ChatServiceClient, SendChatMessageCommand } = require("@rivet-gg/chat"); // CommonJS import
const client = new ChatServiceClient(config);
const command = new SendChatMessageCommand(input);
const response = await client.send(command);

SendChatMessageCommandInput for command's input shape.

SendChatMessageCommandOutput for command's response shape.

config for ChatServiceClient's config shape.