an AI agent for MercadoLibre sellers.
heysteff brings your MercadoLibre listing questions, post-sale messages and WhatsApp and Instagram chats into one inbox, and Steff, the AI agent, answers each one under its channel's rules, in copilot or automatic mode. MercadoLibre is available on every plan and uses one of its channels.
Questions answered while the buyer is still browsing
On MercadoLibre, a question that takes too long to answer can be a sale that goes to another listing. Steff reads the listing before answering (title, price, available quantity, attributes and description) and answers with that data and what you taught it in the knowledge base: shipping times, warranty, returns. In automatic mode it also answers at night and on weekends; in copilot mode it leaves the answer ready for your team to approve with one click.
Each question gets its own answer, in a single message of up to 2,000 characters. Since the answer is public and MercadoLibre does not let you edit it, it pays to start in copilot and switch to automatic once you see the answers coming out right.
Post-sale, organized by purchase
Messages after the sale are grouped by purchase, with the order and shipment status in front of the agent. Steff answers what can be answered with that data ("has it shipped?", "when does it arrive?"), in messages of up to 350 characters. If the purchase is a delivery to be arranged with the seller, it follows the policy you write: arrange it with your steps or leave it to your team. If there is no policy, it does not make up costs or timelines: it asks a person to review.
The agent does not answer claims. They land as a note in that purchase's conversation and escalate to your team.
What MercadoLibre does not allow, heysteff does not do
MercadoLibre bans phone numbers, emails, links and social handles in replies, and penalizes automated messages started by the seller. heysteff checks every reply before sending it and lets no contact details through, whether from Steff or your team. It never starts anything on MercadoLibre either: no campaigns, no flows, no scheduled messages. The agent does not try to move the buyer to WhatsApp.
If you also sell outside MercadoLibre
Customers who message you on WhatsApp or Instagram, because they found you elsewhere or bought from you before, land in the same inbox. There the sales tools MercadoLibre does not allow do apply: WhatsApp campaigns, automation flows and, if your store runs on Shopify, cart recovery from the Pro plan (more in AI agent for Shopify). If you ship with Blue Express, the agent gives the real shipment status on those channels; see Blue Express.
Which plan fits how you sell
| Plan | Channels | Conversations per month | For a seller who… |
|---|---|---|---|
| Free (0 USD) | 1 | 50 | Wants to try the agent with just their MercadoLibre account |
| Starter (149 USD) | 2 | 500 | Handles MercadoLibre plus one WhatsApp, with up to 3 users |
| Pro (299 USD) | 4 | 3,000 | Adds Instagram or a Shopify store, with up to 8 users |
| Max (549 USD) | Unlimited | 5,000 | Sells in several countries, with one MercadoLibre account per country |
Monthly prices in USD. Each connected MercadoLibre account uses one channel, and its conversations count toward the monthly allowance like any other channel's. Full details in pricing.
How it connects
You connect your seller account in Settings → Channels, choosing its country: Argentina, Brazil, Chile, Colombia, Mexico, Peru or Uruguay. From then on, new questions and each purchase's messages come in; old questions that were still unanswered are saved, but the agent does not answer them. The technical detail is in MercadoLibre on heysteff.
Frequently asked questions
What AI tool can answer MercadoLibre questions?
heysteff connects your MercadoLibre seller account, and its AI agent answers listing questions and post-sale messages with each listing's and each order's data. It works in copilot mode, where your team approves each answer, or in automatic mode, and it is available on every plan.
Can I handle MercadoLibre and WhatsApp from the same place?
Yes. MercadoLibre questions and messages land in the same inbox as WhatsApp, Instagram, Messenger and email. The Starter plan has 2 channels, enough for MercadoLibre and one WhatsApp; Pro has 4.
Can the agent move a MercadoLibre buyer to WhatsApp?
No. MercadoLibre bans sharing phone numbers, emails, links or social handles in replies, and heysteff blocks any reply that contains them, whether the agent or someone on the team wrote it.
Can I connect MercadoLibre accounts from several countries?
Yes, one account per country, in Argentina, Brazil, Chile, Colombia, Mexico, Peru and Uruguay. Each account uses one of the plan's channels, so for several countries Pro (4 channels) or Max (unlimited channels) usually fits.
Which plan do I need to connect MercadoLibre?
Any, including Free. MercadoLibre has no plan of its own: it uses one of the plan's channels, which are 1 on Free, 2 on Starter, 4 on Pro and unlimited on Max.
How does heysteff handle MercadoLibre claims?
The agent does not answer them. The claim lands as a note in that purchase's conversation and the conversation escalates to your team, so a person handles it on MercadoLibre.
◆ next step
Try Steff answering the questions on your MercadoLibre listings.
You might also like: other industries, MercadoLibre on heysteff, AI for retail with physical stores, AI for marketplaces and API integrations.