Billing

Spend limits + budgets

Set hard caps per key so a runaway loop never drains your balance. Caps stack — the smallest cap that applies wins.

Cap types

  • Per-key: ceiling on lifetime spend through a single key. Useful for handing keys to teammates or sandboxes.
  • Daily: resets at 00:00 UTC. Useful for production guardrails.
  • Monthly: resets at calendar-month boundary. Useful for budget review cycles.

When a cap is hit

Further requests return 429 Too Many Requests with x-meridian-cap-reason: daily (or per-key / monthly) until reset. We email the account owner the first time a cap is hit each cycle.

Configure in dashboard

Open /dashboard/keys and click a key to edit caps.

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