Usage tiers & credits

Two ways to pay

Every jurniti agent runs in its own Firecracker microVM. You pick how it's billed:

• Flat monthly plans — an always-on VM at a fixed price. Cheapest for an agent you keep running 24/7. This is the default Quickstart path (dashboard Add agent, or jurniti up --plan …).
• Usage tiers — a Starter-sized VM (1 vCPU · 2 GiB RAM) metered by the hour and drawn from a prepaid credit balance. Best when the agent only runs part of the day.

Usage tiers exist for bursty, part-time work: run for an afternoon, stop, and pay for exactly the hours you used. There are two of them — On-Demand and Spot — and they differ only in price and whether they can be interrupted.

On-Demand — $0.05/hour

A guaranteed slot: never interrupted while running. Stop it whenever you like and the meter stops with it.

It starts in seconds when warm capacity is available, otherwise it's queued — you'll be emailed when it starts. We don't invent an ETA; if there's no warm box, you wait for one and get a notification the moment it's yours.

Spot — $0.025/hour

Half the On-Demand rate, in exchange for interruptibility. The trade is disclosed up front, not buried:

When capacity gets tight, a Spot agent pauses gracefully and restores automatically once capacity frees. That makes it a fit for interruption-tolerant work — batch runs, experiments, and agents that checkpoint their own progress. If losing a few minutes of unsynced work would hurt, use On-Demand instead.

Prepaid credits

Usage tiers draw from a credit balance you top up in advance:

• $10 minimum top-up. Your card stays on file and is never charged until you explicitly top up.
• Billed per second while running, with a 60-second minimum per run. A stopped agent burns nothing.
• A $0 balance gracefully stops your usage VMs — persist is preserved, nothing is deleted. That is the spending cap: hit zero, top up, and start again when you're ready.

Refunds

Unused credit can be refunded via jurniti credits refund or operator help — self-service refunds are rate-limited (one net refund per 30 days) and capped by top-up history. Consumed credit — hours an agent has already run — is final.

How to use it

Dashboard (top up + manage)

1. Sign in at app.jurniti.com/login.
2. Open Plan → the Prepaid credits widget (app.jurniti.com/dashboard/plan#credits).
3. Add credits ($10 minimum) — Stripe handles the card. Your card is not charged until you top up. The first top-up ends the 30-day money-back guarantee on your first flat subscription (the UI asks you to acknowledge this before charging).
4. On the Agents list, usage-tier VMs show their status (running, out of credits, paused for capacity). Top up deep-links back to #credits.

Manage billing on the same Plan page opens the Stripe Customer Portal (update card, invoices, cancel flat plans).

Launching a new On-Demand or Spot agent is CLI-first today — the dashboard Add agent wizard is for flat monthly plans (Starter / Pro / Max) only. After a usage VM is running, open it in the dashboard like any other agent.

CLI (top up + launch)

jurniti credits buy 25          # buy $25 of prepaid credits ($10 minimum)
jurniti credits balance         # balance, burn rate, and runway
jurniti credits history         # the credit ledger
jurniti credits refund 10       # refund unused credit

jurniti up --tier ondemand --harness hermes   # a guaranteed usage VM
jurniti up --tier spot --harness hermes        # a cheaper, interruptible one

--tier and --plan are mutually exclusive: a tier meters hourly from credits, so there's no billing cycle and --cycle doesn't apply.

When to pick which

• Always-on agent → a flat plan (cheapest for 24/7).
• A few hours a day / bursty → On-Demand ($0.05/hr, never interrupted).
• Interruption-tolerant batch work → Spot ($0.025/hr, checkpoints its own progress).
• Many agents at once on Spot → Swarm (CLI-first: --count
  • --group).