Two companies sued each other over an AI tool, and then... they just stopped

What the fight was about

Imagine a company that wants its AI assistants to be able to pull information from other software — say, checking a candidate's résumé in a hiring system — without simply giving the AI full, unrestricted access to that system. A tool that handles this safely, controlling who can see what and keeping an activity log, is sometimes called an "MCP gateway." (MCP is a technical standard that lets AI tools communicate safely with other software.)

A startup called Runlayer built such a gateway and worked closely with workplace software company Rippling for over a year, with Rippling testing Runlayer's product. But Rippling never actually became a paying customer. Instead, a Rippling employee texted Runlayer's founder to let him know that Rippling was building a competing version itself — described internally as essentially a copy of Runlayer's product.

The lawsuits, and how they ended

Runlayer filed a lawsuit, claiming Rippling had violated the terms of their testing agreement. Rippling countersued, alleging that Runlayer had copied ideas Rippling had patented — a move some observers saw as leverage to make the legal fight too costly for the smaller startup to sustain.

In the end, both sides simply let it go. Runlayer dropped its case first, and Rippling followed shortly after. No settlement money changed hands in either direction, and neither side even had its legal fees reimbursed.

The lesson for founders

The real lesson isn't really about who "won." It's a warning about how a company you work closely with — even one that tests your product for over a year — can turn into a direct competitor almost overnight, in a sector moving as fast as AI is right now. Rippling has since launched its own AI model-routing product and its own MCP gateway, putting it in competition with multiple companies at once — including the very startup it had just been testing.