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

# Armory Hooks Overview

> Understand Armory's client hook lifecycle and execution model

Armory hooks are lifecycle callbacks that run during payment execution.

Hooks are not x402 protocol fields. They are local runtime behavior for selection, mutation, logging, and error handling.

## Lifecycle

1. `onPaymentRequired`
2. `selectRequirement`
3. `beforeSignPayment`
4. `afterPaymentResponse`
5. `onError`

## Execution Model

* Hooks execute in array order
* Selection narrows progressively as hooks run
* Hook failures are fail-closed by default

## Next Pages

* [Chain Preference](/client-hooks/chain)
* [Token Preference](/client-hooks/token)
* [Cheapest Selection](/client-hooks/cheapest)
* [Logger](/client-hooks/logger)
* [combineHooks](/client-hooks/combine)
* [Custom Hooks](/client-hooks/custom-hooks)