Security & trust
The scariest failure of multi-tenant AI is silent: another company's data paraphrased into a fluent, confident answer. BrainStack is designed so that failure can't happen.
Tenant isolation at the storage layer
Every workspace's knowledge lives in its own namespace, derived from the authenticated session — never from anything a client sends. A query from one company physically cannot touch another company's vectors. This is architecture, not policy.
Capability-based permissions
Roles don't just hide buttons. An employee's agent session never connects to the systems that expose manager actions — the capabilities are absent from the session itself, not blocked by a prompt that could be talked around.
Grounded, verifiable answers
Answers are constructed only from retrieved passages of your own documents, every fact carries a citation you can open at the source page, and the assistant says “I don't know” rather than inventing. Automated faithfulness scoring watches for drift.
Full auditability
Every question leaves a trace: what was retrieved, which tools were called, by whom, at what cost. When you need to know why the AI said something, the answer is a click away.
Your data is never training data
Documents you upload ground answers for your workspace, and that is all they do. Nothing is used to train or fine-tune models — ours or anyone else's.
Defense in depth for actions
External actions are validated twice: the agent only exposes tools your role permits, and the connected system independently verifies the caller's identity, role and workspace before executing anything.
Have a security question we didn't answer?
We'd rather over-explain than under-deliver. Ask us anything about isolation, retention or permissions.
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