> For the complete documentation index, see [llms.txt](https://docs.expand.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.expand.network/additional-info.md).

# Additional Info

- [Error Messages](https://docs.expand.network/additional-info/error-messages.md): Please see the below document for information on error messages expand.network supports.
- [Client-Side Security Essentials](https://docs.expand.network/additional-info/client-side-security-essentials.md): Ensuring the safety and security of our users' data is our utmost priority
- [Compute Unit Costs](https://docs.expand.network/additional-info/compute-unit-costs.md): Breakdown of Expand.network's compute unit costs, per API Endpoint.
- [API Metadata](https://docs.expand.network/additional-info/api-metadata.md): Breakdown of Expand.network's supported chains with Protocol Id, per API Endpoint.
- [Audit Certificate](https://docs.expand.network/additional-info/audit-certificate.md): Attestation Letter for Application Security Assessment
- [Brand Assets](https://docs.expand.network/additional-info/brand-assets.md): Downloadable assets for expand.network
- [FAQs](https://docs.expand.network/additional-info/faqs.md): Answers to all your queries: Start BUIDL-ing today...
- [Quicknode Marketplace](https://docs.expand.network/additional-info/quicknode-marketplace.md): The following RPC methods, developed for Quicknode, are available on Ethereum.
- [DEX](https://docs.expand.network/additional-info/quicknode-marketplace/dex.md)
- [Lending Protocols](https://docs.expand.network/additional-info/quicknode-marketplace/lending-protocols.md)