Jinko launched on YC with a travel booking API for AI agents

Travel is one of the first jobs people hand to an AI agent. The agent then runs into a wall. Airline sites were built for people in a browser, not for a bot. Jinko, a Y Combinator Fall 2026 company, launched a travel search and booking API aimed at AI agents. The company says half of all transactions done through personal agents are for travel. That is Jinko's own figure. The launch page had 3 votes at the time of writing.

What Jinko does

Jinko's pitch has three parts, in its own words on the launch post. An agent can use it to answer any travel question. An agent can book flights without being blocked by an airline. Jinko names United and American as two carriers that block agents today. And an agent that books through Jinko earns a commission. That commission can become a revenue line for the company running the agent.

The product is positioned as infrastructure. The launch post calls travel a core primitive for agents. Jinko wants to be the piece an agent calls when a user asks for a trip. The company lists agent platforms it already works with. It names Wajo, Pally and Exa. No airline, hotel or booking partner is named in the launch post.

Why do it this way

Agents reaching airline sites directly keep running into bot defences. Those defences exist because airlines manage inventory and pricing closely. A commission-based wholesale API gives both sides a path they can live with. The airline keeps control of its channel. The agent gets a route that will not be cut off. The agent's maker gets a share of the ticket.

Jinko's block-avoidance line is the practical hook. An agent that cannot complete a booking has failed in front of its user. The failure is often a CAPTCHA the airline served to the bot. An API that holds a real integration with the carrier removes that failure.

Who is building it

The team describes itself as repeat entrepreneurs. They built a flight infrastructure API before Jinko. They sold it to Hopper in 2021. They then grew Hopper's European business from zero to $70 million. The $70 million and the Hopper sale are the team's own account. There is no independent report in the launch post. The founder named on YC's company page is Kevin Gauthier.

The company's own site is at gojinko.com. Jinko is listed under Travel and APIs on its YC page, in the Fall 2026 batch. Demos are offered through Calendly.

The pitch sits in a wider pattern. Agent platforms are starting to rent narrow APIs for one job each. A general assistant can plug in a flight API like this one. The other option is to write a scraper that will stop working the next week.

Source

• Jinko launch, Y Combinator