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Osmosia is a conversational artificial intelligence built for automotive professionals. It answers buyer messages inside the inboxes of the listing platforms, leboncoin and La Centrale, in under 15 minutes, seven days a week from 7am to 11pm, in the seller's tone. It assigns every conversation a purchase intent score, then makes booking an appointment easy. Unlike an auto-responder, it knows the professional's stock, services and style, and holds a real conversation with each buyer.

Osmosia connects natively to the leboncoin and La Centrale inboxes. Incoming messages are centralised into a single stream and handled with the same responsiveness and qualification. No extra software has to be installed on the platforms.

Osmosia replies in under 15 minutes, seven days a week from 7am to 11pm, weekends and public holidays included. Response speed is the most documented driver of inbound lead conversion: according to MIT and InsideSales (2007), contacting a prospect within 5 minutes rather than 30 multiplies the odds of reaching them by around 100 and the odds of qualifying them by around 21. According to the Harvard Business Review (2011), across 2,241 audited US companies, the average response time reached 42 hours and 23 % never replied.

Osmosia adapts to each seller's register, usual phrasing and level of familiarity, so exchanges stay consistent with the professional's image at any hour. The seller remains the data controller under the GDPR, including the duty to inform buyers that replies are automated. As soon as a case falls outside the expected frame or calls for a commercial judgment, the thread is handed back to the seller.

With every message, Osmosia reassesses the buyer's purchase intent and assigns a score out of 100, updated at each exchange. The calculation separates weak signals, which count for little, from strong ones. A question about financing, a deposit or colour stays a weak signal. A callback request, a proposed date, a confirmed appointment or a document sent are strong signals. The scale is deliberately strict: without a concrete action, a confirmed appointment or a deposit, a prospect does not go past 60 points.

The seller sets the qualification threshold themselves, as a percentage, above which a lead is surfaced. They choose whether to receive a text and email notification for each qualified lead and each booked appointment. Every lead and every ongoing conversation stays available in their Osmosia interface, with the vehicle concerned and the full exchange history.

Osmosia runs up to three follow-ups after the buyer's last reply. The seller sets the timing of each. An explicit end to the conversation, such as 'too expensive' or 'I found something else', drops the score and stops the follow-ups.

Once the prospect is qualified, Osmosia proposes a slot based on the seller's availability and confirms the appointment by message. The seller configures their opening hours, their lunch-break availability and whether their Google listing hours are taken into account. The calendar fills with qualified contacts, with no manual entry.

Yes, at any time, from the Osmosia interface. The seller follows ongoing conversations, steps in whenever they want, and sets, vehicle by vehicle, the room for negotiation that guides Osmosia's replies.

Osmosia answers from the real listing data and the synchronised stock, and never offers a vehicle that is no longer available. No conversational AI is infallible: that is why the seller keeps full visibility over the exchanges, can take over at any time, and has the Osmosia team adjust the replies. Cases outside its scope are passed to the seller rather than handled by the AI.

Osmosia is for professionals who sell used vehicles through listing platforms: independent used car dealers, manufacturer-approved repairers, franchised dealers and dealer groups. It suits structures with 20 to 130 vehicles in stock particularly well, from the solo seller to the small sales team. It absorbs the volume of incoming enquiries without extra hiring.

Osmosia is built for any professional selling vehicles through listing platforms. Replies adapt to each listing's features and to the questions specific to each segment: range and size for a van, interior fit-out for a motorhome, licence category for a motorbike.

An auto-responder sends the same holding message to every buyer. A generic chatbot follows a fixed decision tree, with no knowledge of the stock or the trade. A DMS manages stock, invoicing, the police register and listing distribution. Osmosia replaces none of these tools: it plugs into the existing setup and fills the link between the incoming message and the commercial handover, holding the conversation, scoring purchase intent and organising the appointment.

The demo runs on the professional's real cases: their listings, their buyers, their services. Setup means connecting the lead sources, synchronising the stock, then configuring the tone of the replies with the Osmosia team. No change of tool or working method is required. Onboarding is handled directly by the founders.