@checkoutkit/feed

Product feeds for the Agentic Commerce Protocol. Agents cannot buy what they cannot see.

pnpm add @checkoutkit/feed

Note the 2026-04-17 feed is an API, not a static file format, and upserts are PATCH — products you omit are left unchanged.

Building

The builder takes the flat shape your database already has and expands it into the spec's nested one:

import { createFeedBuilder } from "@checkoutkit/feed";

const feed = createFeedBuilder({ currency: "gbp", sellerName: "Example Coffee" })
  .add({
    id: "prod_beans",
    title: "Single Origin Beans",
    images: ["https://example.coffee/beans.jpg"],
    variants: [{ id: "sku_250", title: "250g", price: 1800, availability: true }],
  });

Validating — every problem, with the row and JSONPath that caused it:

import { formatProblems } from "@checkoutkit/feed";
console.log(formatProblems(feed.validate()));

Systemic mistakes collapse into one line: 10,000 products missing images reads as one warning, not ten thousand. Also available as npx checkoutkit validate feed.

Serving and publishing

import { createFeedServer, FeedClient } from "@checkoutkit/feed";

const handler = createFeedServer({ backend });                       // merchant
await new FeedClient({ baseUrl }).publish(feedId, feed.toProducts()); // batched

CheckoutKit is an independent community implementation of the Agentic Commerce Protocol. It is not affiliated with, sponsored by, or endorsed by OpenAI or Stripe.

Part of CheckoutKit · Apache-2.0