A familiar pattern
Whenever a new layer of computing appears, the early version is closed. Networks before the internet were private. Phones before standards were stuck inside one carrier. Each player thought their walled garden would grow forever. None of them did. Open standards always won in the end, because users always wanted their things to work together.
Agents are at the same moment. Today, most agents work only inside one vendor’s world. They can use that vendor’s tools, see that vendor’s data, and ship results into that vendor’s app. That is fine for a demo. It is not fine for serious work, which always crosses vendor lines.
What needs to be standard
Three things need to be standard for agent interoperability to feel as natural as the web. First, a shared way to describe what an agent can do, so others can call it safely. Second, a shared way to pass identity, so the right person gets credit and consent is respected. Third, a shared way to handle payments, so value can flow between agents without custom contracts each time.
Each of these is technically simple. The hard part is political. Big players want the standard to look like their product. Smaller players want flexibility. History suggests the winning standard will be the boring one that everyone can live with, not the elegant one that one vendor pushes.
What blocks interoperability
Three forces slow this down. The first is lock-in pricing, where vendors discount today to make tomorrow expensive. The second is hidden data formats, where one vendor stores information in a way that does not travel. The third is fear of safety, which is sometimes real and sometimes used as cover to avoid opening up.
Buyers can push back on all three. They can ask for export tools as part of the contract. They can demand open formats. They can require third-party safety reviews instead of trusting marketing pages. The more buyers ask, the faster interoperability arrives.
What it means for builders
If you build agents, plan from the start to interoperate. Pick or follow an open standard for tool descriptions. Use standard identity layers. Sign up to a shared payments rail. Yes, this is more work than going alone. The payoff is that your product can be reached by every other agent in the system.
Once interoperability arrives, single-vendor products will feel as outdated as websites that only worked in one browser. The team that ships interoperable from day one will move with the tide. The team that ships closed will spend the next two years rewriting.
The internet lesson
We have seen this movie before. The web won because anyone could read anyone else’s document. Email won because anyone could send to anyone else. The next layer of the internet will win for the same reason. Anyone’s agent will be able to call anyone else’s tool, on behalf of any user, with the right consent.
When that future arrives, the holding companies and infrastructure providers that built the connective tissue will look obvious in hindsight. The ones who tried to own everything will become case studies. That is the bet behind BRAIN OS. Build the connective tissue, and let the agents bloom on top.