# Changelog

{% updates format="full" %}
{% update date="2026-05-20" %}

##

## Changelog

{% hint style="info" %}
**Changelog purpose:** Record externally visible documentation and integration behavior changes. Keep internal implementation-only notes out of the public changelog.
{% endhint %}

### May 2026

* Added GitBook-ready documentation strategy and import pack.
* Added pricing, billing, and gas-credit documentation module.
* Added SDK-first developer quickstart language for `@paychainhq/sdk`.
* Added clearer guidance for payout routes, dynamic payout recipients, webhook verification, balances, transactions, networks, and tokens.
* Added contract interactions guidance for EVM contracts, Solana programs, published actions, simulations, execution safety, and sponsored gas impact.
* Added GitBook hint blocks for important notes, security warnings, operator notes, and publishing guidance.

{% hint style="success" %}
**Maintenance note:** Add an entry whenever pricing, gas credits, SDK behavior, webhook delivery, payout routing, contract interactions, or go-live requirements change.
{% endhint %}
{% endupdate %}
{% endupdates %}


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