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

<AgentInstructions>

## Submitting Feedback

If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback:

POST https://docs.chainstack.com/feedback

```json
{
  "path": "/docs/add-ons",
  "feedback": "Description of the issue"
}
```

Only submit feedback when you have something specific and actionable to report.

</AgentInstructions>

# Chainstack add-ons: marketplace extensions for RPC nodes

> Enhance your Chainstack RPC nodes with add-ons including debug and trace APIs, archive data access, and MEV protection for Ethereum and EVM chains.

Add-ons are [Marketplace](https://console.chainstack.com/marketplace) items that you can add to your organization and setup.

Current add-ons:

* [Yellowstone gRPC Geyser plugin](/docs/yellowstone-grpc-geyser-plugin)
* [Unlimited Node](/docs/unlimited-node)