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Brain is your company’s shared, governed knowledge base and memory. Agents (yours and Naive’s) ingest documents once, then ask grounded questions and get answers with citations — or write and recall durable semantic memory (facts, entities, relationships) that compounds across runs. Unlike the open web (search), Brain is company-specific and private: policies, docs, past decisions, product info. It is Naive-owned end to end — the canonical source of truth lives in a Postgres “spine” (documents, chunks, episodes, claims, provenance) with a semantic engine (GBrain) projected on top for richer recall. Reads degrade gracefully to the spine when the engine is unavailable, and deletion is provable.
Brain is an opt-in primitive. It’s disabled by default on new companies. Enable it in the AccountKit’s primitives_config (dashboard → Account Kits, or the kit’s brain: { enabled: true }) before use, or calls return 403 primitive_disabled_by_kit.

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Two layers: documents and semantic memory

Both live in the same company-scoped knowledge base. A company gets a default “Default Brain” KB provisioned lazily on first use; you can create additional named KBs.

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CLI first

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Credits

Plan-quota metering also applies per tenant for the brain primitive (across HTTP, SDK, and MCP).

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Grounded answers with citations

query returns an answer plus citations that map back to your ingested documents. Citations are scoped to the calling company and knowledge base — a citation that can’t be mapped to one of your documents is dropped, so answers never leak another tenant’s sources.
Pass the returned session_id back to query/think to continue the same conversation thread.

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Governance and deletion

  • Approval-gated destruction. Deleting a knowledge base, deleting a document, and forget are approval-gated for agent (API-key) callers: the call returns 202 with a pending approval that an owner approves. Session owners execute immediately.
  • Provable deletion. Deletes are provider-first and return a DeletionReceipt distinguishing provider_confirmed (the purge ran) from verified (post-purge emptiness was confirmed). Tombstones prevent forgotten data from resurfacing through the async semantic projection.
  • Memory Gateway. Agent-produced memory can be routed through a proposal → review → promotion pipeline (shadow / proposal / enforced modes) so canonical company memory is never silently mutated. Review proposals in Mission Control.

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Interfaces

Brain is available across every surface:

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Typical workflow