Kifly — Agentic Commerce & Payments

Search or browse Kifly's product catalog across every seller on the network. Multilingual semantic search (100+ languages); omit `q` to browse recent listings. Pass `q` as an array (up to 5) to try several phrasings in ONE call instead of N searches. Too many hits? Ask once with `facets: true`, then narrow with `delivers_to`, price, `category` or `seller_handle`; page with `cursor` when `kifly:has

Create a new shopping cart on Kifly. **For network (cross-seller) tokens you MUST pass `seller_handle`** — each cart is bound to exactly one seller. Get the handle from search_products results (every item's `kifly:seller` IS the handle in network results) or get_seller. Seller-scoped tokens may omit the handle — their own seller is implicit. Returns a cart_id to use with add_to_cart and checkout.

Requires `cart:write`, or no key: send `meta.ucp-agent.profile`. Add a product variant to an existing cart. Use the variant_id from search_products results. Returns full cart state including item_ids you can use with update_cart_item. **Max quantity per item and max cart total are enforced — call `get_platform_limits` to check the current limits before building a large cart.** Exceeding the per-it

Inspect the current state of a cart — line items, quantities, prices, and shipping address. Each item includes an `item_id` you can pass to `update_cart_item` to change quantity or remove the item. Call this after `add_to_cart` to review the cart before checkout, or any time the buyer asks what's in the cart. `kifly_purchasable: false` (`fulfillment: "external"`) means checkout on this cart hands

Requires `cart:write`, or no key: send `meta.ucp-agent.profile`. Change the quantity of a line item in an open cart, or remove it entirely. Set `quantity` to 0 to remove the item. Get the `item_id` from `get_cart` or the `cart` field in the `add_to_cart` response. Returns the updated cart state. **The per-item quantity ceiling applies here too — call `get_platform_limits` to check the current limi

Requires `cart:write`, or no key: send `meta.ucp-agent.profile`. Persist a shipping address on the cart and confirm the seller can deliver to it. **Call BEFORE `checkout`.** Returns `delivery_eligible`. When true it also returns `cart_total_with_delivery_cents` — quote that full price before sending the buyer to pay, unless `shipping_priced_at` is `merchant_checkout`: then fee and total are null b

Requires `cart:write` scope. Create a cart, add items, and set the shipping address in ONE call — the fast path when you already know the seller, the exact variant(s), and the buyer's address (e.g. a reorder, or a buyer who has decided). Prefer this over the create_cart → add_to_cart → set_shipping_address sequence to save round trips; those granular tools stay available for exploratory, multi-ste

Requires `checkout:write` or `checkout:link`, or no key: send `meta.ucp-agent.profile` for the same payment link. **Checkout is always human-in-the-loop: it returns a link the buyer opens and confirms — it never charges a card or completes an order on its own.** **Call `set_shipping_address` first unless `fulfillment` is `"external"` (the seller's site collects the address).** Cart total must not

Start registering a buyer so they can be recognized across future purchases without re-entering their details. Takes the buyer's email and name and always emails a 6-digit verification code — the response is `{ verification_required: true, buyer_profile_id }` whether the email is brand new or already has an account (so this call alone never reveals which). Ask the buyer to read you the code from t

Send a 6-digit verification code to a **returning** buyer's email so they can prove the account is theirs and recover their saved name + shipping address on this connection — without pasting any token or re-entering their name. Call this when the buyer says they've shopped with Kifly before and gives you their email; then ask them to read you the code from their inbox and call `verify_buyer`. Alwa

Verify the 6-digit code a returning buyer received by email (from `request_buyer_code`). On success returns `{ buyer_token, buyer_profile_id }` — pass the `buyer_token` to `get_buyer_profile` to auto-fill their saved name + shipping address, and to `checkout` to pre-fill their email on the payment link. Fails with `invalid_otp` if the code is wrong or expired (ask them to re-check, or call `reques

Retrieve a repeat buyer's saved name, email, and default shipping address, given their `buyer_token`. Use them to auto-fill `set_shipping_address`, and pass the token to `checkout` so Stripe pre-fills their email. `default_shipping_address` may be null — then collect it normally and call `save_buyer_address` so it is pre-filled next time. **Ask in plain language ('are you a returning Kifly shopper

List a returning buyer's recent orders and their current fulfillment status — use this in a NEW session to answer 'did my order ship?' / 'where's my package?' when you don't have the original `session_id` from `checkout`. Requires the buyer's `buyer_token` (recover it via `request_buyer_code` + `verify_buyer` if you don't have one). Returns `{ orders, count }`, newest first; each order has `status

Save a shipping address to the buyer's Kifly profile so it auto-fills on future purchases. **Call this after a successful checkout if `get_buyer_profile` returned `default_shipping_address: null`.** The address is persisted server-side against the buyer token — the buyer never needs to re-enter it. Use the same address that was passed to `set_shipping_address` for this order.

Send structured feedback to the Kifly team. **No API key required** — send `meta.ucp-agent.profile` and this works with no credential at all. **Call after a confusing response, a dead-end, or a successful workaround you had to invent** — it's how we improve the agent surface, and a report from the moment you were stuck is worth more to us than a working purchase. Fire-and-forget: returns 202 immed

Submit the buyer's **product/feature request** to the Kifly team. Use this when the buyer wishes Kifly *itself* did something it doesn't — a missing capability, a rough flow, an idea to improve the platform. **This is NOT `submit_feedback`** (that's for reporting a broken/confusing API response you hit). Requires the buyer's `kfb_live_` token — only registered buyers can file requests. Help the bu

**Call first when the user names a store or its website**: it says whether Kifly carries it before you open a browser. Returns the seller's public profile: location, storefront URL, delivery fee and coverage, catalog size, `verified_domains` (domains it proved it controls; trust signal, not identity), and `fulfillment` (buy here, or hand off to the seller's site). **Call before `create_cart` or `s

The seller's published returns, shipping and warranty policy, in their own words. **Call before telling a buyer what happens after purchase** — if it is not here, say so; never infer a typical policy. `available: false` is the normal case for most sellers and is not an error. `get_seller`'s `policies.available` tells you whether this call is worth making. Network tokens pass `handle`; seller-scope

List all active sellers on the Kifly network. **Requires a network token (kfn_live_…).** Returns each seller's handle, name, city, region, delivery coverage (`nationwide:true` or a `states` list), delivery fee, and catalog size. `delivery_coverage.cities` may be capped to a handful of entries — compare `cities.length` against `city_count`; if fewer, call `get_seller` for that seller's full city li

Returns the current platform-enforced cart limits: `max_item_quantity` (per-line-item ceiling), `max_cart_total_cents`, and `max_cart_total_usd`. Call this once at session start before building a large cart so you can quote limits to the buyer proactively rather than discovering them via errors. Always read them at runtime rather than hardcoding.

No key needed for your own session: send the profile you checked out with. Check the status of a Stripe checkout session. Poll every 5 seconds after checkout until status is 'paid', 'shipped', or 'failed'. Returns order details (order_id, amount, items) when paid. When the seller marks the order as shipped, status becomes 'shipped' and tracking_number, carrier, and shipped_at are included — share

Get unstuck. Returns Kifly's website and support email for the BUYER, plus how to report the problem to Kifly's engineers yourself. Call this if you are stuck, hit an unresolvable error, or the buyer asks how to reach a human. Share the website and email with the buyer; use `submit_feedback` (no API key needed) to tell us what blocked you — that is the fastest way to get it fixed.