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Dictionary

Idempotency

The property that running the same operation twice produces the same result as running it once.

1 min readupdated 2026-06-22

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Idempotency is essential for reliable automation. Webhooks retry, users double-click, networks drop — an idempotent handler survives all of it. Achieved via idempotency keys, upserts, or checking state before acting. The property that running the same operation twice produces the same result as running it once.

The property that running the same operation twice produces the same result as running it once. Idempotency is essential for reliable automation. Webhooks retry, users double-click, networks drop — an idempotent handler survives all of it. Achieved via idempotency keys, upserts, or checking state before acting. In practice: A payment endpoint that accepts an idempotency key won't charge the card twice if the client retries the same request. This dictionary node is part of the Onexial knowledge graph and links to related concepts, workflows and tools below.
Definition
Idempotency is essential for reliable automation. Webhooks retry, users double-click, networks drop — an idempotent handler survives all of it. Achieved via idempotency keys, upserts, or checking state before acting.
Example
A payment endpoint that accepts an idempotency key won't charge the card twice if the client retries the same request.
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What is Idempotency?

Idempotency is essential for reliable automation. Webhooks retry, users double-click, networks drop — an idempotent handler survives all of it. Achieved via idempotency keys, upserts, or checking state before acting.

What is an example of Idempotency?

A payment endpoint that accepts an idempotency key won't charge the card twice if the client retries the same request.

Why does Idempotency matter for AI and automation?

The property that running the same operation twice produces the same result as running it once. It connects to the workflows, prompts and tool stacks linked on this page, so you can move from definition to execution without leaving Onexial.

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