Lemrock

Lemrock is a Paris deeptech startup building middleware for agentic commerce, founded in 2025 and incorporated in December 2025 by Roxane Laigle, a former Fnac Darty Strategy Director, alongside Sasha Collin and Clement Nguyen, who previously co founded the Y Combinator backed startup Mindely. It raised a six million euro, roughly seven million dollar, seed round in March 2026 led by Galion.exe, with Criteo founder Jean-Baptiste Rudelle joining the board.

The thesis is a structural shift in how people shop: as consumers move from Google searches to asking ChatGPT, Claude, Gemini, or Perplexity which product to buy, some retailers already report website traffic declines of up to thirty percent, and the infrastructure for brands to be visible and transactable inside those conversations does not exist at scale. Lemrock is that missing layer. Through a single integration it ingests a brand's product catalog, structures it so large language models can retrieve, interpret, and surface it inside conversations, exposes real time pricing and availability, executes transactions, and tracks performance, closing the loop between recommendation and purchase. Its stance is deliberately vendor neutral and brand safe: one integration reaches multiple AI platforms while brands keep control over pricing, margins, and product representation. Because conversational agents gather context, history, and user preferences during a conversation, Lemrock uses that information to sharpen recommendations in real time with a granularity traditional search cannot match, powered by proprietary models trained on millions of data points. In under a year it has onboarded more than sixty brands including Maisons du Monde, Cdiscount, Darty, Leroy Merlin, Lidl, and Rakuten, processing more than one hundred million interactions monthly.

Lemrock fits European and US retailers and brands that want to appear and sell inside AI assistants without building bespoke per platform integrations. As a young, narrow middleware layer it is a weaker fit for buyers needing published pricing, documented security certifications, or a broad agent development platform, and it faces the long term risk of AI platforms building native commerce features.