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

# eth_getCode

> Returns the contract bytecode at an address. Use pending to detect newly deployed contracts before block finalization.

Returns the compiled bytecode at a given address. Returns `"0x"` for externally owned accounts (EOAs).

<Tip>
  **Flashblocks:** Query `https://mainnet.base.org` with `"pending"` to detect contract deployments before the block seals.
</Tip>

## Parameters

<ParamField body="address" type="string" required>
  The 20-byte address to query.
</ParamField>

<ParamField body="block" type="string" required>
  Block number in hex, or `"latest"`, `"pending"`, `"safe"`, `"finalized"`, `"earliest"`.
</ParamField>

## Returns

<ResponseField name="result" type="string">
  The bytecode at the address as a hex string. `"0x"` if there is no code.
</ResponseField>

## Example

<CodeGroup>
  ```bash Standard (latest) theme={null}
  curl https://mainnet.base.org \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{
      "jsonrpc": "2.0",
      "method": "eth_getCode",
      "params": ["0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "latest"],
      "id": 1
    }'
  ```

  ```bash Flashblocks (pending, ~200ms) theme={null}
  curl https://mainnet.base.org \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{
      "jsonrpc": "2.0",
      "method": "eth_getCode",
      "params": ["0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "pending"],
      "id": 1
    }'
  ```

  ```json Response theme={null}
  {
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x608060405234801561001057600080fd5b50..."
  }
  ```
</CodeGroup>