> ## 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.

# Advanced APIs

> The Chainstack node capabilities beyond standard RPC — Warp transactions, debug and trace APIs, and the Beacon Chain API — and which networks support each.

Advanced APIs are the node capabilities that go beyond the standard RPC method set: faster transaction propagation, and execution-level data about how a transaction ran.

| Capability | What it gives you | Available on |
| - | - | - |
| [Warp transactions](/docs/warp-transactions) | Distributes your transaction through a high-speed relay network on EVM chains, or straight to the leader on Solana, so validators pick it up sooner than with regular propagation | Ethereum, BNB Smart Chain, and Solana |
| [Debug and trace APIs](/docs/debug-and-trace-apis) | The `debug_*` and `trace_*` namespaces — detailed execution data for transactions, blocks, and contract calls | Most EVM chains — see the per-chain list below |
| [Reading EVM traces](/docs/reading-evm-traces-with-calltracer-and-prestatetracer) | How to read Geth's built-in `callTracer` and `prestateTracer` output: the call tree, reverts, gas, and pre-state | Any chain that exposes debug and trace |
| [Beacon Chain API](/reference/beacon-chain) | The consensus-layer REST API — validators, attestations, committees, sync state, and chain events — served alongside the execution-layer JSON-RPC | Ethereum and Gnosis Chain |

## Which networks support debug and trace

For a chain-by-chain answer, see the **Debug and Trace** column in [Protocols and networks](/docs/protocols-networks), which is generated from the supported-node list and stays current as protocols are added.

[Debug and trace APIs](/docs/debug-and-trace-apis) then covers each supported chain individually, since the available methods differ by client — Erigon-based chains expose the Parity `trace_*` namespace, while Geth-based chains expose `debug_*` only.

## Which networks support Warp transactions

Warp transactions run on **Ethereum**, **BNB Smart Chain**, and **Solana**. Each has its own setup page: [Ethereum trader nodes](/docs/ethereum-trader-nodes), [BNB trader nodes](/docs/bnb-trader-nodes), and [Solana trader nodes](/docs/solana-trader-nodes).

Warp transactions require a paid plan, and the transactions themselves are billed separately from requests. See [Warp transactions](/docs/warp-transactions) for the details.

## Which networks support the Beacon Chain API

The consensus-layer API is served on **Ethereum** and **[Gnosis Chain](/docs/gnosis-chain)**. See [Ethereum Beacon Chain](/reference/beacon-chain) for the full specification, and [Beacon Chain | Gnosis](/reference/gnosis-beacon-chain) for the Gnosis counterpart, which follows the same specification.

## Ask for something that isn't here

Some capabilities are available as node customizations rather than as standard features — see [Node customization](/docs/features-availability-across-subscription-plans#node-customization) for what can be adjusted per node and on which plans.

If what you need isn't listed anywhere, request it on the [Chainstack ideas portal](https://ideas.chainstack.com/). Requests there are public, so you can also upvote something someone else has already asked for.