> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sendpadi.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Idempotency

> Idempotency-Key on money-moving writes.

# Idempotency

Send a UUID in `Idempotency-Key` on money-moving writes:

* Local transfer
* Identity lookups (BVN / NIN)
* VAS purchases (airtime, data, cable, electricity, betting, internet, eSIM)
* Gift card orders (buy & sell)
* Virtual card fund / withdraw / close
* Crypto buy / sell / send / swap / confirm

**Not required** on validate helpers (`/transfers/validate`, `/vas/cable/validate`, `/vas/electricity/validate`).

Reuse the same key to safely retry without double-charging.


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