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

# Card and transaction events

> Lifecycle of a one-time virtual card and every authorization on it.

Filter: `card.*`, `transaction.*`, `balance.*`.

| Event | Fires when |
| - | - |
| [`card.created`](/webhooks/cards/card-created) | A one-time virtual card was created. |
| [`card.updated`](/webhooks/cards/card-updated) | The card's balance or status changed, for example after its first authorization. |
| [`card.closed`](/webhooks/cards/card-closed) | The card closed. |
| [`transaction.authorized`](/webhooks/cards/transaction-authorized) | A merchant authorized a charge on the card. |
| [`transaction.cleared`](/webhooks/cards/transaction-cleared) | The authorization settled. |
| [`transaction.declined`](/webhooks/cards/transaction-declined) | A charge was declined. |
| [`transaction.voided`](/webhooks/cards/transaction-voided) | A pending authorization was reversed by the merchant. |
| [`balance.low`](/webhooks/cards/balance-low) | A card's remaining balance dropped below its threshold. |


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