The agent in your product should just work.

import { Client } from "@deepnoodle/nvoken";
import { lookupOrder, updateAddress, handlers } from "./tools";

const client = new Client();

const support = await client.agents.create({
  key: "support",
  instructions: "Help customers with their orders.",
  model: "anthropic/claude-sonnet-5",
  tools: [lookupOrder, updateAddress],
});

// In your request handler. One Turn per message.
const turn = await support
  .bindTools(handlers)
  .start(message, { tenant: customer.id, user: viewer.id });

for await (const { snapshot } of turn.updates()) {
  send(snapshot.status, snapshot.text);
}

import { defineHostTool, defineJsonSchema } from "@deepnoodle/nvoken";
import { db } from "./db";

export const lookupOrder = defineHostTool({
  mode: "host",
  name: "lookup_order",
  description: "Look up one order by ID.",
  inputSchema: defineJsonSchema({
    type: "object",
    properties: { orderId: { type: "string" } },
    required: ["orderId"],
    additionalProperties: false,
  }),
});

// updateAddress is declared the same way.
// Handlers run in your backend. Nvoken never sees your database.
export const handlers = {
  lookup_order: ({ orderId }) => db.orders.get(orderId),
  update_shipping_address: ({ orderId, address }, ctx) =>
    db.orders.reship(orderId, address, { key: ctx.toolCallId }),
};