# JSON-RPC

> Original page: https://docs.blockvectra.com/en/api/json-rpc/

## Overview

All requests are counted in **Compute Units (CU)** and rate-limited per key.

* **Endpoint**: `POST /v1/{chain}/{api_key}` (key in the path) or `POST /v1/{chain}` (key in a header). For Robinhood Chain, `{chain}` is `robinhood_mainnet`: `https://api.blockvectra.com/v1/robinhood_mainnet`. The same [API key](https://docs.blockvectra.com/en/quickstart/#1-get-an-api-key) works on every supported chain
* **Protocol**: HTTP `POST`, single call or batch
* **Metering**: A request's total CU cost counts against your key's burst capacity as soon as it arrives. Every accepted call that gets a response is charged at the method's published CU weight; the [Errors reference](https://docs.blockvectra.com/en/errors/) lists the cases that are not billed. Billing is settled hourly (rounded down to whole units, remainder carries over, executed \~15 minutes after the period ends)
* **Ethereum**: its own method list and a state window determined by `state_window_blocks` — see [Supported Chains → Ethereum](https://docs.blockvectra.com/en/chains/#ethereum).

For complete parameter schemas, method signatures, and interactive request testing across all methods, see the [Full Reference](https://docs.blockvectra.com/en/api/json-rpc/reference/). For path versioning, backward compatibility rules, and SDK recommendations, see [API versioning and compatibility](https://docs.blockvectra.com/en/api/versioning/).

To get an API key and send a first request, see the [Quickstart](https://docs.blockvectra.com/en/quickstart/); it also covers key passing and batch requests.

## Common calls

Worked examples for common calls.

### Query logs (`eth_getLogs`)

Filter a contract's logs over a recent block range — here, the ERC-20 `Transfer` event (topic `0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef`). See the [CU Metering Rules](#cu-metering-rules) table below for `eth_getLogs`'s current CU weight; a range wider than the chain's `max_logs_block_range` (from `GET /v1/chains`) is rejected with `-32602`.

**cURL**

```bash
export BLOCKVECTRA_API_KEY=rgw_your_api_key

curl -X POST "https://api.blockvectra.com/v1/robinhood_mainnet" \
  -H 'Content-Type: application/json' \
  -H "x-api-key: $BLOCKVECTRA_API_KEY" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [{
      "fromBlock": "0x45a2409",
      "toBlock": "0x45a2609",
      "address": "0x1111111111111111111111111111111111111111",
      "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]
    }],
    "id": 1
  }'
```


  **TypeScript**

```ts
// npx tsx example.mts
import { createPublicClient, http } from 'viem'

const apiKey = process.env.BLOCKVECTRA_API_KEY!
const client = createPublicClient({
  transport: http('https://api.blockvectra.com/v1/robinhood_mainnet', { fetchOptions: { headers: { 'x-api-key': apiKey } } }),
})

const TRANSFER_TOPIC = '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'
const latest = await client.getBlockNumber()

const logs = await client.getLogs({
  address: '0x1111111111111111111111111111111111111111',
  topics: [TRANSFER_TOPIC],
  fromBlock: latest > 100n ? latest - 100n : 0n,
  toBlock: latest,
})
console.log(logs.length)
```


  **Python**

```python
# uv run --with web3 python example.py
import os
from web3 import Web3

api_key = os.environ["BLOCKVECTRA_API_KEY"]
w3 = Web3(
    Web3.HTTPProvider(
        "https://api.blockvectra.com/v1/robinhood_mainnet",
        request_kwargs={"headers": {"Content-Type": "application/json", "x-api-key": api_key}},
    )
)

TRANSFER_TOPIC = "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
latest = w3.eth.block_number

logs = w3.eth.get_logs(
    {
        "address": "0x1111111111111111111111111111111111111111",
        "topics": [TRANSFER_TOPIC],
        "fromBlock": max(latest - 100, 0),
        "toBlock": latest,
    }
)
print(len(logs))
```


  **Go**

```go
// go mod init example && go get github.com/ethereum/go-ethereum && go mod tidy && go run .
package main

import (
	"context"
	"fmt"
	"log"
	"math/big"
	"os"

	"github.com/ethereum/go-ethereum"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/ethclient"
	"github.com/ethereum/go-ethereum/rpc"
)

var transferTopic = common.HexToHash(
	"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
)

func main() {
	apiKey := os.Getenv("BLOCKVECTRA_API_KEY")
	ctx := context.Background()

	rpcClient, err := rpc.DialOptions(ctx, "https://api.blockvectra.com/v1/robinhood_mainnet", rpc.WithHeader("x-api-key", apiKey))
	if err != nil {
		log.Fatal(err)
	}
	client := ethclient.NewClient(rpcClient)

	latest, err := client.BlockNumber(ctx)
	if err != nil {
		log.Fatal(err)
	}
	from := uint64(0)
	if latest > 100 {
		from = latest - 100
	}

	address := common.HexToAddress("0x1111111111111111111111111111111111111111")
	logs, err := client.FilterLogs(ctx, ethereum.FilterQuery{
		FromBlock: new(big.Int).SetUint64(from),
		ToBlock:   new(big.Int).SetUint64(latest),
		Addresses: []common.Address{address},
		Topics:    [][]common.Hash{{transferTopic}},
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println(len(logs))
}
```


  **Rust**

Add to `Cargo.toml`:

```toml
[dependencies]
alloy = { version = "1", features = ["provider-http", "rpc-types"] }
tokio = { version = "1", features = ["full"] }
eyre = "0.6"
reqwest = { version = "0.13", default-features = false }
```

```rust
// cargo run
use alloy::primitives::{address, b256};
use alloy::providers::{Provider, ProviderBuilder};
use alloy::rpc::types::Filter;

const TRANSFER_TOPIC: alloy::primitives::B256 =
    b256!("ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef");

#[tokio::main]
async fn main() -> eyre::Result<()> {
    let api_key = std::env::var("BLOCKVECTRA_API_KEY").unwrap_or_default();
    let rpc_url: reqwest::Url = "https://api.blockvectra.com/v1/robinhood_mainnet".parse()?;

    let mut headers = reqwest::header::HeaderMap::new();
    headers.insert("x-api-key", api_key.parse()?);
    let http_client = reqwest::Client::builder().default_headers(headers).build()?;

    let provider = ProviderBuilder::new().connect_reqwest(http_client, rpc_url);

    let latest = provider.get_block_number().await?;
    let from = latest.saturating_sub(100);

    let filter = Filter::new()
        .address(address!("1111111111111111111111111111111111111111"))
        .event_signature(TRANSFER_TOPIC)
        .from_block(from)
        .to_block(latest);

    let logs = provider.get_logs(&filter).await?;
    println!("{}", logs.len());

    Ok(())
}
```


### Trace a transaction (`debug_traceTransaction`)

Trace a transaction's internal calls with the `callTracer`. See the [CU Metering Rules](#cu-metering-rules) table below for `debug_traceTransaction`'s current CU weight. Like the other state-reading methods, it's rejected once the target block falls outside that chain's recent-state window (`-32011`). The window size is the chain's `state_window_blocks` (from `GET /v1/chains`). On chains that provide traces, use the [Data API](https://docs.blockvectra.com/en/api/data/) for historical traces.

**cURL**

```bash
export BLOCKVECTRA_API_KEY=rgw_your_api_key

curl -X POST "https://api.blockvectra.com/v1/robinhood_mainnet" \
  -H 'Content-Type: application/json' \
  -H "x-api-key: $BLOCKVECTRA_API_KEY" \
  -d '{
    "jsonrpc": "2.0",
    "method": "debug_traceTransaction",
    "params": ["0xYOUR_TRANSACTION_HASH", {"tracer": "callTracer"}],
    "id": 1
  }'
```


  **TypeScript**

```ts
// npx tsx example.mts
import { createPublicClient, http } from 'viem'

const apiKey = process.env.BLOCKVECTRA_API_KEY!
const client = createPublicClient({
  transport: http('https://api.blockvectra.com/v1/robinhood_mainnet', { fetchOptions: { headers: { 'x-api-key': apiKey } } }),
})

const txHash = '0xYOUR_TRANSACTION_HASH'
const trace = await client.request({
  method: 'debug_traceTransaction' as any,
  params: [txHash, { tracer: 'callTracer' }] as any,
})
console.log(trace)
```


  **Python**

```python
# uv run --with web3 python example.py
import os
from web3 import Web3

api_key = os.environ["BLOCKVECTRA_API_KEY"]
w3 = Web3(
    Web3.HTTPProvider(
        "https://api.blockvectra.com/v1/robinhood_mainnet",
        request_kwargs={"headers": {"Content-Type": "application/json", "x-api-key": api_key}},
    )
)

tx_hash = "0xYOUR_TRANSACTION_HASH"
trace = w3.manager.request_blocking(
    "debug_traceTransaction", [tx_hash, {"tracer": "callTracer"}]
)
print(trace)
```


  **Go**

```go
// go mod init example && go get github.com/ethereum/go-ethereum && go mod tidy && go run .
package main

import (
	"context"
	"encoding/json"
	"fmt"
	"log"
	"os"

	"github.com/ethereum/go-ethereum/rpc"
)

func main() {
	apiKey := os.Getenv("BLOCKVECTRA_API_KEY")
	ctx := context.Background()

	client, err := rpc.DialOptions(ctx, "https://api.blockvectra.com/v1/robinhood_mainnet", rpc.WithHeader("x-api-key", apiKey))
	if err != nil {
		log.Fatal(err)
	}

	txHash := "0xYOUR_TRANSACTION_HASH"
	var trace json.RawMessage
	err = client.CallContext(ctx, &trace, "debug_traceTransaction", txHash, map[string]string{
		"tracer": "callTracer",
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println(string(trace))
}
```


  **Rust**

Add to `Cargo.toml`:

```toml
[dependencies]
alloy = { version = "1", features = ["provider-http", "rpc-types"] }
tokio = { version = "1", features = ["full"] }
eyre = "0.6"
reqwest = { version = "0.13", default-features = false }
serde_json = "1"
```

```rust
// cargo run
use alloy::providers::{Provider, ProviderBuilder};
use serde_json::json;

#[tokio::main]
async fn main() -> eyre::Result<()> {
    let api_key = std::env::var("BLOCKVECTRA_API_KEY").unwrap_or_default();
    let rpc_url: reqwest::Url = "https://api.blockvectra.com/v1/robinhood_mainnet".parse()?;

    let mut headers = reqwest::header::HeaderMap::new();
    headers.insert("x-api-key", api_key.parse()?);
    let http_client = reqwest::Client::builder().default_headers(headers).build()?;

    let provider = ProviderBuilder::new().connect_reqwest(http_client, rpc_url);

    let tx_hash = "0xYOUR_TRANSACTION_HASH";
    let trace: serde_json::Value = provider
        .client()
        .request("debug_traceTransaction", (tx_hash, json!({ "tracer": "callTracer" })))
        .await?;
    println!("{trace}");

    Ok(())
}
```


## CU metering rules

Compute Unit (CU) weight for each JSON-RPC method.

| Method | Weight (CU) |
| --- | --- |
| `eth_blockNumber` | 1 |
| `eth_chainId` | 1 |
| `eth_getBlockByNumber` | 5 |
| `eth_blobBaseFee` | 10 |
| `eth_feeHistory` | 10 |
| `eth_gasPrice` | 10 |
| `eth_getBalance` | 10 |
| `eth_getBlockByHash` | 10 |
| `eth_getBlockReceipts` | 10 |
| `eth_getBlockTransactionCountByHash` | 10 |
| `eth_getBlockTransactionCountByNumber` | 10 |
| `eth_getCode` | 10 |
| `eth_getHeaderByHash` | 10 |
| `eth_getHeaderByNumber` | 10 |
| `eth_getProof` | 10 |
| `eth_getRawTransactionByBlockHashAndIndex` | 10 |
| `eth_getRawTransactionByBlockNumberAndIndex` | 10 |
| `eth_getRawTransactionByHash` | 10 |
| `eth_getStorageAt` | 10 |
| `eth_getTransactionByBlockHashAndIndex` | 10 |
| `eth_getTransactionByBlockNumberAndIndex` | 10 |
| `eth_getTransactionByHash` | 10 |
| `eth_getTransactionCount` | 10 |
| `eth_getTransactionReceipt` | 10 |
| `eth_getUncleByBlockHashAndIndex` | 10 |
| `eth_getUncleByBlockNumberAndIndex` | 10 |
| `eth_getUncleCountByBlockHash` | 10 |
| `eth_getUncleCountByBlockNumber` | 10 |
| `eth_maxPriorityFeePerGas` | 10 |
| `eth_syncing` | 10 |
| `net_version` | 10 |
| `web3_clientVersion` | 10 |
| `web3_sha3` | 10 |
| `eth_call` | 15 |
| `eth_createAccessList` | 20 |
| `eth_estimateGas` | 20 |
| `eth_simulateV1` | 20 |
| `eth_getLogs` | 30 |
| `eth_sendRawTransaction` | 30 |
| `debug_traceBlockByHash` | 100 |
| `debug_traceBlockByNumber` | 100 |
| `debug_traceCall` | 100 |
| `debug_traceTransaction` | 100 |
| `trace_block` | 100 |
| `trace_call` | 100 |
| `trace_get` | 100 |
| `trace_replayTransaction` | 100 |
| `trace_transaction` | 100 |

## Method policy

Available methods vary by chain; each chain's list is shown below, and [Supported Chains](https://docs.blockvectra.com/en/chains/) covers the rest. Only methods matching an allowed name or pattern are reachable; any other method returns `-32601 method not available`.

**Allowed on every chain below:**

- `eth_blockNumber`
- `eth_call`
- `eth_chainId`
- `eth_estimateGas`
- `eth_gasPrice`
- `eth_getBalance`
- `eth_getBlockByHash`
- `eth_getBlockByNumber`
- `eth_getBlockTransactionCountByHash`
- `eth_getBlockTransactionCountByNumber`
- `eth_getCode`
- `eth_getLogs`
- `eth_getStorageAt`
- `eth_getTransactionByBlockHashAndIndex`
- `eth_getTransactionByBlockNumberAndIndex`
- `eth_getTransactionByHash`
- `eth_getTransactionCount`
- `eth_getTransactionReceipt`
- `eth_sendRawTransaction`
- `eth_syncing`
- `net_version`
- `web3_clientVersion`

### Arbitrum One

eth_getLogs max block range: 1,000 blocks; state window: 5,000 blocks

**Also allowed:**

- `debug_traceBlockByHash`
- `debug_traceBlockByNumber`
- `debug_traceCall`
- `debug_traceTransaction`
- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Arc

eth_getLogs max block range: 1,000 blocks; state window: —

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Avalanche C-Chain

eth_getLogs max block range: 1,000 blocks; state window: 128 blocks

**Also allowed:**

- `debug_traceBlockByHash`
- `debug_traceBlockByNumber`
- `debug_traceCall`
- `debug_traceTransaction`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `web3_sha3`

### Base

eth_getLogs max block range: 1,000 blocks; state window: 10,000 blocks

**Also allowed:**

- `eth_maxPriorityFeePerGas`
- `eth_blobBaseFee`
- `eth_feeHistory`
- `eth_createAccessList`
- `eth_getProof`
- `eth_simulateV1`
- `eth_getBlockReceipts`
- `eth_getRawTransactionByHash`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getUncleCountByBlockNumber`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getHeaderByNumber`
- `eth_getHeaderByHash`
- `web3_sha3`

### Berachain

eth_getLogs max block range: 1,000 blocks; state window: 9,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Boba

eth_getLogs max block range: 1,000 blocks; state window: 80,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### BNB Smart Chain

eth_getLogs max block range: 1,000 blocks; state window: 100 blocks

**Also allowed:**

- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_maxPriorityFeePerGas`

### Celo

eth_getLogs max block range: 1,000 blocks; state window: 864,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Ethereum

eth_getLogs max block range: 1,000 blocks; state window: 250,000 blocks

**Also allowed:**

- `debug_traceBlockByHash`
- `debug_traceBlockByNumber`
- `debug_traceCall`
- `debug_traceTransaction`
- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getProof`
- `eth_maxPriorityFeePerGas`
- `trace_block`
- `trace_call`
- `trace_get`
- `trace_replayTransaction`
- `trace_transaction`
- `web3_sha3`

### Ethereum Sepolia

eth_getLogs max block range: 1,000 blocks; state window: —

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getProof`
- `eth_maxPriorityFeePerGas`
- `web3_sha3`

### Fraxtal

eth_getLogs max block range: 1,000 blocks; state window: 10,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Gnosis

eth_getLogs max block range: 1,000 blocks; state window: 262,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### HyperEVM

eth_getLogs max block range: 1,000 blocks; state window: —

**Also allowed:**

- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_maxPriorityFeePerGas`

### Ink

eth_getLogs max block range: 1,000 blocks; state window: 9,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Katana

eth_getLogs max block range: 1,000 blocks; state window: 86,400 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Linea

eth_getLogs max block range: 1,000 blocks; state window: 128 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Metal L2

eth_getLogs max block range: 1,000 blocks; state window: 10,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Mode

eth_getLogs max block range: 1,000 blocks; state window: 10,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### OP Mainnet

eth_getLogs max block range: 1,000 blocks; state window: 1,296,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Polygon

eth_getLogs max block range: 1,000 blocks; state window: 126 blocks

**Also allowed:**

- `debug_traceBlockByHash`
- `debug_traceBlockByNumber`
- `debug_traceCall`
- `debug_traceTransaction`
- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Robinhood Chain

eth_getLogs max block range: 1,000 blocks; state window: 900 blocks

**Also allowed:**

- `eth_maxPriorityFeePerGas`
- `eth_blobBaseFee`
- `eth_feeHistory`
- `eth_createAccessList`
- `eth_getProof`
- `eth_simulateV1`
- `eth_getBlockReceipts`
- `eth_getRawTransactionByHash`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getUncleCountByBlockNumber`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getHeaderByNumber`
- `eth_getHeaderByHash`
- `web3_sha3`
- `debug_traceTransaction`
- `debug_traceCall`
- `debug_traceBlockByNumber`
- `debug_traceBlockByHash`

### Robinhood Chain Testnet

eth_getLogs max block range: 1,000 blocks; state window: 1,023 blocks

**Also allowed:**

- `debug_traceBlockByHash`
- `debug_traceBlockByNumber`
- `debug_traceCall`
- `debug_traceTransaction`
- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Rootstock

eth_getLogs max block range: 1,000 blocks; state window: 6,000 blocks

**Also allowed:**

- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `web3_sha3`

### Soneium

eth_getLogs max block range: 1,000 blocks; state window: 9,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Sonic

eth_getLogs max block range: 1,000 blocks; state window: 11,000 blocks

**Also allowed:**

- `debug_traceBlockByHash`
- `debug_traceBlockByNumber`
- `debug_traceCall`
- `debug_traceTransaction`
- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Unichain

eth_getLogs max block range: 1,000 blocks; state window: 85,500 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### World Chain

eth_getLogs max block range: 1,000 blocks; state window: 30,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### X Layer

eth_getLogs max block range: 1,000 blocks; state window: 250,000 blocks

**Also allowed:**

- `debug_traceBlockByHash`
- `debug_traceBlockByNumber`
- `debug_traceCall`
- `debug_traceTransaction`
- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

### Zora

eth_getLogs max block range: 1,000 blocks; state window: 10,000 blocks

**Also allowed:**

- `eth_blobBaseFee`
- `eth_createAccessList`
- `eth_feeHistory`
- `eth_getBlockReceipts`
- `eth_getHeaderByHash`
- `eth_getHeaderByNumber`
- `eth_getProof`
- `eth_getRawTransactionByBlockHashAndIndex`
- `eth_getRawTransactionByBlockNumberAndIndex`
- `eth_getRawTransactionByHash`
- `eth_getUncleByBlockHashAndIndex`
- `eth_getUncleByBlockNumberAndIndex`
- `eth_getUncleCountByBlockHash`
- `eth_getUncleCountByBlockNumber`
- `eth_maxPriorityFeePerGas`
- `eth_simulateV1`
- `web3_sha3`

**Limits**:

* **Batch**: max 100 calls per request; also limited by the key's CU burst, see below.
* **Request body**: max 2 MiB (see “10. Limits at a glance” in the [full OpenAPI reference](https://docs.blockvectra.com/en/api/json-rpc/reference/))
* **CU burst**: each API key has a CU bucket (`cu_per_sec` refill, `burst_cu` capacity — defaults are 100 CU/s and burst 400 CU; after a paid top-up each key is at least 2,000 CU/s and burst 10,000 CU, and higher custom limits are kept; shown per key in the console Keys table). A single request — including a whole JSON-RPC batch — whose total CU exceeds the key's burst capacity is rejected with `-32022 request_exceeds_burst` (`request cost <N> CU exceeds burst capacity <M> CU`); split it into smaller batches.

## Error codes

See the [Errors reference](https://docs.blockvectra.com/en/errors/) for every error code, whether it is billed, and what to do.

## Full OpenAPI reference

See the [Full OpenAPI reference](https://docs.blockvectra.com/en/api/json-rpc/reference/) for the complete machine-readable specification with all method signatures, request and response schemas, and parameter details rendered interactively.