# `AshOnetime.Resource`
[🔗](https://github.com/baselabs/ash_onetime/blob/v1.6.0/lib/ash_onetime/resource.ex#L67)

Spark resource extension for explicit idempotency and one-time nonce protection.

A protected action must choose a strategy and a nonempty scope. Nonce protection has no
stored-response or external-effect surface and always fails closed.

Nonce `window` separates acceptance (`max_age`) from optional claim retention
(`retain_for`, defaulting to `max_age`). Retention must be at least the acceptance
duration; both include `clock_skew` under the same bounded duration rule.

# `onetime`
*macro* 

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*Consult [api-reference.md](api-reference.md) for complete listing*