Memory that refuses to invent.
A governed knowledge store your agents read over MCP or REST. Facts go in through one write gate and come out with a state, a source and a history. Rust and Postgres, one binary, self-hostable.
The moment that matters is the refusal.
What the first five minutes are built to show. There are no public commands yet, so this is the story rather than a script.
- 01
Declare what the agent must know
A knowledge schema with three required fields.
- 02
Add two facts
One with a source, one without. Each is stored with its state.
- 03
Leave the third out, and ask about it
Nothing supplies it. The question goes to the store anyway.
- 04
The store refuses
UNKNOWN. Required by schema, no evidence. Blocked from generating.
- 05
Add it with a source, and ask again
The answer comes back with its citation and its state.
A store that knows what it knows.
- Four states on every fact: CONFIRMED, INFERRED, UNCERTAIN, UNKNOWN
- One write gate: a low-confidence write never overwrites a confirmed fact
- Provenance on every fact, and append-only evidence
- Gap detection against a declared knowledge schema
- Quarantine for low-confidence writes
- MCP tools and a REST API
- Rust and PostgreSQL, one binary, self-hostable
- Multi-workspace, with workspace-bound keys
Any MCP-capable client can read it.
Four tiers when it opens.
- Developer
- One engineer, one workspace.
- Team
- A product team: multiple workspaces, the review queue, the evidence chain.
- Business
- The compliance buyer: the audit export and the review record.
- Enterprise
- Self-hosted, in your own cloud account or on our infrastructure.
Invite-only until the security and governance hardening closes. No prices before then.
Who should use something else.
- Non-technical agent builders.
- Consumer chatbot memory.
- Teams that need recall benchmarks.
- Anyone who wants the agent to own its own memory.
If that is you, we will say so and point you at the right tool.
Join the waitlist.
Eruka for Developers is invite-only while the security programme closes. Leave your details and we will invite in batches.