A WhatsApp AI agent for sneaker and streetwear resellers: answer size and price availability from a stock list, drop dates, condition and authenticity policy, shipping and pre-orders, and keep up on release day
A reseller's inbox on release day is one question in four hundred voices: got size 10. The stock list changes by the minute, the buyers are impatient, and every slow reply is a sale to the next account on their list. The fix is a size grid the agent reads and a reservation flow that takes a deposit.
Quick answer
Keep a stock note as a size grid per model (model, colourway, sizes in stock, condition, price) and a note of upcoming drops, your authenticity guarantee, condition grading, shipping and returns, and your reservation and deposit rules; a WhatsApp AI agent answers size and price questions in seconds, takes reservations and pre-orders with a deposit instruction, directs payment to your link, and hands over trades, bulk deals and disputes. For release day, pair extra numbers on the Growth plan. ReplyKit runs it from $29 a month.
The size grid
Model: {name} {colourway}. Condition: DS (deadstock). Sizes US: 8 (1), 9 (2), 10 (sold out), 11 (1). Price {amount}. Box: yes. Next restock: {date or unknown}.
Model: {name}. Condition: VNDS. Sizes: 9.5 (1). Price {amount}.
The agent answers from it, and "sold out" is what it says for size 10 rather than a guess. Update when a pair sells; on drop day that is every few minutes, so assign one person to the grid. Pre-release: a drops note with dates, prices and whether pre-orders are open. The approach is the same stock-note method as fashion boutiques.
Reservations, pre-orders, payment
- The agent confirms model, size and price, quotes your reservation rule ("deposit {amount} within 30 minutes holds the pair") and payment link or method.
- It collects name, address and the payment screenshot; a person verifies before marking sold. Deposit mechanics are in bookings with deposits.
- Pre-orders for upcoming drops are recorded with size and deposit, in arrival order.
- Shipping, tracking and returns answered from your policy; see order tracking.
- International buyers get shipping and duties guidance by region, in their language.
Authenticity and condition
- Your guarantee in exact words and your authentication process.
- Condition grades defined (DS, VNDS, used with grade) so every reply means the same thing.
- A rule that the agent never legit-checks a customer's pair from photos; it describes and hands over if you offer that service.
- Your policy on trades, which most resellers hand to a person.
Release day
One paired number answers 200 replies a day; a big drop needs two or three, paired a fortnight ahead to clear the warm-up, with each number on a different post or story so the lead list shows which did the work. The agent answers everyone in seconds, in parallel, while one person runs the grid and one verifies payments. Planning is in peak days.
What stays with a person:
- Trades and bulk or wholesale deals.
- Legit checks and authenticity disputes.
- Payment verification and refunds.
- Price negotiation.
- Anything about a specific pair's flaws beyond the grade.
Everything else the agent handles, and when it is unsure it says so and offers a human rather than guessing; see why the agent says it is not sure.
One honest note before the setup. ReplyKit connects to your number by QR pairing, the same linked-device mechanism as WhatsApp Web. It is live in minutes and needs no Meta approval, but Meta does not sanction automation this way, so a number can be restricted. We enforce limits of 30 replies an hour and 200 a day per number with a warm-up ramp for new numbers, reply to inbound messages only, and recommend a dedicated number rather than your main line. The full picture is in our ban guide.
Starter at $29 a month covers one number, one agent, one website assistant and 1,000 AI replies; Growth at $49 adds two more numbers, five agents and follow-up nudges; the 7-day free trial needs no card. Only the agent's own messages count. Pricing is in USD and the service works wherever WhatsApp does. What it costs in practice.
Frequently asked questions
Can the agent answer size availability?
Yes, from a size grid note you keep updated. It says sold out when a size is gone.
Does it take pre-orders?
Yes, with your deposit rule and payment link; a person verifies the payment before marking sold.
Will it legit-check photos?
No. It describes photos and hands over to you.
Can it handle drop-day volume?
Each number answers up to 200 replies a day; pair extra numbers on the Growth plan ahead of the drop.
Does it answer international buyers?
Yes, in their language, with shipping and duties guidance from your notes.
Answer every "got size 10" in seconds
Size grid, reservations with deposits, shipping and authenticity policy handled. 7-day free trial, no card.
Sources and further reading
- Harvard Business Review, The Short Life of Online Sales Leads (Oldroyd, McElheran, Elkington, 2011) · firms that responded within an hour were about seven times more likely to qualify the lead
- WhatsApp Business Messaging Policy · opt-in, opt-out and prohibited-use rules every business must follow
- ReplyKit, Will WhatsApp ban my number for automation? · our own account of the risk and the limits we enforce
ReplyKit is an independent product and is not affiliated with or endorsed by Meta or WhatsApp. This article is general guidance for running a small business, not legal, financial or regulatory advice.