Where everyone finds trusted answers.

Two products, one set of doors. The first is search over our own index: 2.2 million tool actions read from the software agents and robots can invoke, MCP servers, APIs, CLIs, SDKs, models, robots and devices, each one checked by machine and labelled with what the check found. It is live, in the box on the homepage, through the API, through the MCP server and on the command line.

The second is the neutral router: one call that decides, on the question itself, which search source to ask, our index first and outside engines after, judged on quality, latency and cost, with the source named. We do not index the web; we route over what already exists. It is not built yet. It arrives as its own endpoint and its own MCP tool, and nothing about the first product changes when it does.

Three species. Developers and builders, who read the box as a console for what their agent will get. Agents, which install in one line and call seven tools or plain HTTP. Robots, which call the same search over HTTP from a ROS 2 node or a companion computer and must never load what failed its check. Each has its own page, its own machine file, and the same rules.

A product for everyone else, a formless agent that does deep search for any person, comes later at pursuit.unfragile.ai. It will be an agent in our own sense of the word, calling these same endpoints, and it keeps the consumer fight out of this domain.

1. Labels are measured, never sold. Verified and signed, official, found in code, demo, failed: our instruments decide, and no ranking, model or payment changes a label. Vendors may pay to be checked sooner, never to be ranked higher.
2. An honest no is an answer. When nothing fits, the search says so and asks one question back. It does not fill the gap with a guess.
3. We never run what we rank. We find, check, sign and route. The software stays where it lives.
4. Every claim carries its receipt. A verified record has an Ed25519-signed passport anyone can check offline against our published key. How we check is public.

There are three kinds of things in the world. Fragile things break under stress: the teacup, shipped in bubble wrap, praying nothing shakes. Robust things resist stress: the rock, unchanged by the storm. And there is a third kind, named by Nassim Nicholas Taleb, that most languages do not have a word for: things that gain from disorder. Muscles after strain. Immune systems after exposure. Good ideas after criticism. Taleb called it antifragile. We took it as a name, because a search that treats every failed query as fuel is built to gain from being wrong.

Unfragile is built by Fallibilism, a brand of Savir Platforms Private Limited, India. The name of the parent is the method: every claim here can be wrong, so every claim carries what would show it wrong, and we change it in the open when it does.