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Show HN: Hosted JayBase – An append-only data store for safe AI agent writes

Hosted JayBase launched as an append-only, attributed data store designed to let AI agents write to company data safely, with pricing starting at $20 per JayBase per month. The product keeps a full history so every agent write is saved and corrections are recorded as new events, and it includes a built-in UI for browsing agent writes in use cases such as bookkeeping, customer data, inventory, and job tracking. The launch matters because giving agents write access can poison trusted data if history disappears.

read1 min views1 publishedSep 23, 2026
Show HN: Hosted JayBase – An append-only data store for safe AI agent writes
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You want agents doing real work on company data, not just generating insights. JayBase keeps an append-only, attributed history, so every write is saved and corrections are new events.

Why write access can stay usable #

A bad agent write can poison the data you trust if history disappears. Hosted JayBase is an append-only, attributed store with a built-in UI so you can browse what agents wrote.

Agents can work on sensitive data, and you can inspect their writes without digging through terminal logs. When a write goes wrong, you catch it in the UI and correct it as a new event. The past stays in the record.

How JayBase actually works #

Giving agents write access needs a store that keeps history. Here is a short look at how JayBase handles agent writes.

What can you do with it? #

Use JayBase as the place where agents write the company data behind real work.

  1. BookkeepingAgents post ledger entries, bills, and payments into records your team can open and verify.

  2. Storing customer dataAgents create and update customer profiles in one place you can browse and update directly.

  3. InventoryAgents adjust stock counts and item records as operations move, without scattering numbers across tools.

  4. Job trackingAgents log jobs, status updates, and notes you can track and update as the work progresses.

From $20 per JayBase per month. See pricing.

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