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Credits are a USD balance on your account that ShingleAI draws from when usage exceeds your monthly plan allowance. Every consumable — LLM tokens, API calls, MCP calls, storage, email sends, SMS, and voice minutes — bills against credits at the per-tier overage rate. For the full per-tier overage table and how usage is tracked, see Usage and metrics.

Prerequisites

  • You must be an Owner or Admin to view the credit balance, purchase credits, or change auto top-up settings
  • Credit purchases use the same payment method as your subscription

View your credit balance

  1. Navigate to Settings > Account > Billing
  2. Find the Credits card
The card shows:
FieldMeaning
Current balanceAvailable credits in USD. A Low Balance badge appears when the balance is at or below your low-balance threshold
Lifetime addedTotal credits ever purchased or auto-topped-up
Lifetime spentTotal credits ever consumed by overages
Recent Transactions5 most recent credit movements (purchase, auto top-up, consumption, refund) with amount and running balance
If you have more than 5 transactions, a History → button expands the list to show all movements.

One-time credit purchase

To buy credits without enabling auto top-up:
  1. On the Credits card, click Purchase Credits
  2. In the Purchase Credits dialog, enter an amount in USD
  3. Click Purchase
  4. Complete payment in the embedded Stripe checkout
The amount field is free-form: the default is 10,theminimumis10**, the minimum is **5, and the maximum is $1,000 per purchase. Credits land in your account immediately on successful payment.
Credits do not expire and roll over month to month. They are not refundable except where required by law.

Auto top-up

Auto top-up keeps your credit balance topped up automatically so usage never gets cut off mid-month. It’s off by default. To configure auto top-up:
  1. On the Credits card, in the Auto Top-Up section, click Enable (or Manage if already enabled)
  2. In the Auto Top Up dialog, toggle Enable auto top up on
  3. Confirm your default payment method, or add one if none is on file
  4. Set When credits are below — the balance at which a top-up fires
  5. Set Purchase this amount — how much to add per top-up
  6. Click Save
SettingRange
When credits are below (threshold)$0 up to the purchase amount
Purchase this amount55 – 100,000
When your balance drops below the threshold, ShingleAI charges your saved payment method for the purchase amount and credits your balance. You receive a credit_auto_recharge_triggered notification on each successful top-up and a credit_purchase_failed notification if the charge fails.
A failed auto top-up does not retry automatically. Update your payment method in the Stripe Customer Portal and trigger a one-time purchase to restore service.

What happens when credits run out

When your monthly allowance is exhausted and your credit balance is depleted, behavior depends on the consumable:
  • LLM tokens (agent chat). Agent conversations are blocked. The chat shows an Out of Credits card with a button to purchase more
  • Other consumables (API calls, MCP calls, email, SMS, voice, storage). New requests fail until you top up credits, your billing cycle resets, or you upgrade
  • Free tier. Same behavior — Free accounts can purchase credits to keep working past the included allowance
You also receive notifications as you approach exhaustion:
NotificationWhen
credit_balance_lowBalance falls below your auto top-up threshold (or a default threshold if auto top-up is off)
credit_balance_depletedBalance reaches zero

Next steps

Usage and metrics

See current usage and per-tier overage rates

Stripe Customer Portal

Update your payment method and view invoices