> ## Documentation Index
> Fetch the complete documentation index at: https://chainstack-docs-polygon-erigon-trace-deprecation.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Optimism API reference: op-reth JSON-RPC

> Optimism API reference for Chainstack nodes — Global and Trader nodes both run op-reth. Covers the supported JSON-RPC methods and namespaces.

This page provides an overview of the available methods on the Chainstack Optimism nodes. Go ahead and try the interactive examples as well.

Chainstack Optimism [Global Nodes](/docs/global-elastic-node) and [Trader Nodes](/docs/trader-node) both run [op-reth](https://github.com/paradigmxyz/reth), so method availability is the same across tiers. Debug and trace methods require [debug and trace APIs](/docs/debug-and-trace-apis) to be enabled on the node.

<Info>
  The list may not be comprehensive but serves as guidance. In general, if a method is available in `op-reth` and it's an `eth_` method, then it's available on your Chainstack node.

  If there's a method missing, you are unsure, or just have any questions, [talk to us](https://support.chainstack.com/hc/en-us/requests/new). We love talking to developers <Icon icon="heart" iconType="solid" /> <Icon icon="screwdriver-wrench" iconType="solid" />.
</Info>

| Method                                      | Availability                                                | Comments                                                                                                                                                                                                |
| ------------------------------------------- | ----------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| eth\_getBlockByHash                         | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getBlockByNumber                       | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getBlockTransactionCountByHash         | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getBlockTransactionCountByNumber       | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getUncleCountByBlockHash               | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getUncleCountByBlockNumber             | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getBlockReceipts                       | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_chainId                                | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_syncing                                | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_blockNumber                            | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_accounts                               | <Icon icon="square-check" iconType="solid" />               | Returns an empty list because Chainstack doesn't store accounts.                                                                                                                                        |
| eth\_call                                   | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_callMany                               | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_estimateGas                            | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_createAccessList                       | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_gasPrice                               | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_feeHistory                             | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_maxPriorityFeePerGas                   | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_newFilter                              | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_newBlockFilter                         | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_newPendingTransactionFilter            | <Icon icon="square-check" iconType="solid" />               | Subsequent `eth_getFilterChanges` will always return empty because the [Optimism mempool is private](https://help.optimism.io/hc/en-us/articles/16135808401947-The-Transaction-Pool-a-k-a-Mempool).     |
| eth\_uninstallFilter                        | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getFilterChanges                       | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getFilterLogs                          | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getLogs                                | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getBalance                             | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getStorageAt                           | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getTransactionCount                    | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getCode                                | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getProof                               | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getTransactionByHash                   | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getRawTransactionByHash                | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getTransactionByBlockHashAndIndex      | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getRawTransactionByBlockHashAndIndex   | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getTransactionByBlockNumberAndIndex    | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getRawTransactionByBlockNumberAndIndex | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_getTransactionReceipt                  | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_subscribe                              | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_unsubscribe                            | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_sendRawTransaction                     | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| eth\_sendRawTransactionSync                 | <Icon icon="square-check" iconType="solid" />               | Sync version of `eth_sendRawTransaction` defined by [EIP-7966](https://eips.ethereum.org/EIPS/eip-7966). Returns the receipt instead of just the hash.                                                  |
| web3\_clientVersion                         | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| web3\_sha3                                  | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| net\_listening                              | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| net\_peerCount                              | <Icon icon="square-check" iconType="solid" />               | Always returns `0x0` on op-reth. The p2p networking is done on `op-node`, which does not have an endpoint exposed. See also [OP issue 5745](https://github.com/ethereum-optimism/optimism/issues/5745). |
| net\_version                                | <Icon icon="square-check" iconType="solid" />               |                                                                                                                                                                                                         |
| debug\_traceBlockByHash                     | <Icon icon="square-check" iconType="solid" />               | Enable [debug and trace APIs](/docs/debug-and-trace-apis).                                                                                                                                              |
| debug\_traceBlockByNumber                   | <Icon icon="square-check" iconType="solid" />               | Enable [debug and trace APIs](/docs/debug-and-trace-apis).                                                                                                                                              |
| debug\_traceTransaction                     | <Icon icon="square-check" iconType="solid" />               | Enable [debug and trace APIs](/docs/debug-and-trace-apis).                                                                                                                                              |
| debug\_traceCall                            | <Icon icon="square-check" iconType="solid" />               | Enable [debug and trace APIs](/docs/debug-and-trace-apis).                                                                                                                                              |
| debug\_traceCallMany                        | <Icon icon="square-check" iconType="solid" />               | Enable [debug and trace APIs](/docs/debug-and-trace-apis).                                                                                                                                              |
| debug\_getModifiedAccountsByNumber          | <Icon icon="square-check" iconType="solid" />               | Enable [debug and trace APIs](/docs/debug-and-trace-apis).                                                                                                                                              |
| debug\_getModifiedAccountsByHash            | <Icon icon="square-check" iconType="solid" />               | Enable [debug and trace APIs](/docs/debug-and-trace-apis).                                                                                                                                              |
| debug\_storageRangeAt                       | <Icon icon="xmark" iconType="solid" />                      | Not supported on Reth (returns `null`). Use [`eth_getStorageAt`](/docs/using-eth_getstorageat-instead-of-debug_storagerangeat-on-reth) instead.                                                         |
| admin\_nodeInfo                             | Can be enabled on a [dedicated node](/docs/dedicated-node). |                                                                                                                                                                                                         |
| admin\_peers                                | Can be enabled on a [dedicated node](/docs/dedicated-node). |                                                                                                                                                                                                         |
| admin\_addPeer                              | Can be enabled on a [dedicated node](/docs/dedicated-node). |                                                                                                                                                                                                         |

op-reth also supports the `trace_` namespace (for example, `trace_block` and `trace_transaction`); these require [debug and trace APIs](/docs/debug-and-trace-apis) to be enabled. See the [Base methods](/docs/base-methods) reference for the full op-reth method set, which is shared with Optimism.