Open the closed
We're building developer infrastructure on a single principle: every dependency should be replaceable without a rewrite.
Most platforms grow by trapping you. Better integrations, lower prices, a smoother onboarding — until the day switching costs more than staying. That's not a technical problem. It's a business model.
KB Labs is built differently. Every adapter, every runtime, every storage backend is hidden behind a typed contract. You depend on the interface, not the vendor. When a better LLM comes out, you swap a config line. When your scale demands a different database, you swap an adapter. Your workflow logic stays exactly as you wrote it.
We call this philosophy Open the closed. It means we design every system boundary so it can be opened — inspected, replaced, or extended — without fear. The concrete implementation is always a detail. The contract is what lasts.
This shapes everything: how we structure plugins, how we expose the platform to agents, how we approach multi-tenancy, how we write our own internal tooling. The test is always the same — can you replace this piece without touching the rest?
How we build
Open the closed
Every abstraction we build has a clear exit. Swap the LLM provider, the vector store, the workflow backend — without rewriting your business logic. Lock-in is a design choice, and we choose against it.
Contracts over implementations
The interfaces between system parts are first-class citizens. A typed contract is the only thing your code should depend on. The implementation behind it can change, scale, or be replaced at any time.
Developer experience is a product
A platform that requires tribal knowledge to operate has failed. Every command should be discoverable, every error should be actionable, and every abstraction should earn its place by making something genuinely simpler.
Boring infrastructure, interesting products
State management, rate limiting, audit logs, multi-tenancy — these are solved problems. We solve them once, well, so teams can spend their time on what makes their product unique.
Small surface, deep capability
A small, coherent API that composes well beats a sprawling one every time. We add features reluctantly and remove them eagerly. Complexity is a cost, not a feature.
Observability by default
Software you cannot inspect is software you cannot trust. Every workflow run, every plugin call, every state mutation should be traceable without attaching a debugger or adding extra tooling.
KB Labs started as internal tooling. We were building automation pipelines and kept running into the same wall: every new requirement meant swapping a vendor, and every swap broke something downstream.
The fix wasn't better vendors. It was better contracts. We extracted the abstraction layer, built a plugin system on top, and eventually had something worth sharing.
We're a small, remote-first team based in Russia. We move deliberately, write things down, and prefer clarity over cleverness.
Build on something that stays open
Start free. Bring your own vendors. Change your mind later.