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Plans set account-wide monthly request limits and per-minute rate limits. All API keys under an account share those limits.

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Plans

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Team plans

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How usage is measured

Each API response reports its request cost in X-MTA-API-Request-Cost. Most endpoints cost 1; /api/v1/subway/arrival-board and /api/v1/bus/arrival-board cost 2. The account’s monthly and per-minute limits apply across all of its API keys. Responses can include these quota headers: The API reports the endpoint cost separately from Unkey’s account-wide request limits. The usage value is based on the account limits returned by Unkey; the response headers are only present when that information is available.

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Check your usage

  • Open the Usage tab in the dashboard to view requests grouped by API key for the billing period.
  • Use the MCP get_usage account tool to retrieve per-key and aggregate usage.
  • Inspect the quota headers on REST responses for the current request’s cost and available limits.

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Upgrade or manage billing

Open the Billing tab in the dashboard. The Clerk pricing table lets you choose or upgrade a plan. Use Manage billing to manage an existing subscription.

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When a limit is reached

The API rejects requests when Unkey reports an exhausted limit: The response body includes a message describing which limit was exceeded. See Authentication for the exact messages and key errors.

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Cancellation

When a subscription is canceled at the end of its billing period, the account’s billing metadata records cancelAtPeriodEnd and accessEndsAt. API keys remain available until accessEndsAt and expire at that time; access does not end immediately when cancellation is scheduled.