Resources

import { MCPServer } from "mcp-use";

const server = new MCPServer({
  name: "inventory-server",
  version: "1.0.0",
});

server.resource(
  {
    name: "inventory-summary",
    uri: "inventory://summary",
    mimeType: "application/json",
  },
  async (uri, ctx) => ({
    contents: [
      {
        uri: uri.href,
        mimeType: "application/json",
        text: JSON.stringify({
          lowStock: await inventory.lowStock({ signal: ctx.signal }),
        }),
      },
    ],
  }),
);

export default server;

server.resourceTemplate(
  {
    name: "customer-profile",
    uriTemplate: "customer://{customerId}/profile",
    complete: {
      customerId: async (value) =>
        (await customers.search(value)).map((customer) => customer.id),
    },
  },
  async (uri, { customerId }, ctx) => {
    const id = Array.isArray(customerId) ? customerId[0] : customerId;
    const customer = await customers.get(id, { signal: ctx.signal });

    return {
      contents: [
        {
          uri: uri.href,
          mimeType: "application/json",
          text: JSON.stringify(customer),
        },
      ],
    };
  },
);

async (uri) => ({
  contents: [
    {
      uri: uri.href,
      mimeType: "text/markdown",
      text: report.summary,
    },
    {
      uri: `${uri.href}/chart`,
      mimeType: "image/png",
      blob: report.chartBase64,
    },
  ],
});

await server.notifyResourcesChanged();

await server.notifyResourceUpdated("inventory://summary");