eth_call

Executes a message call without creating a transaction.

Executes a message call immediately without broadcasting a transaction to the network. No gas is consumed on-chain. Used to read contract state or simulate calls.

Since Denim, Base produces a canonical block every 200ms and Flashblocks are retired. The "pending" tag is still accepted, but it no longer returns Flashblocks preconfirmation state. Use "latest" for the newest canonical state. See Migrate From Flashblocks.

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Parameters

transaction · object · required

The transaction call object.

Show Transaction Fields

from · string

Address the call is sent from. Optional; defaults to the zero address.

to · string · required

Address the call is directed to.

gas · string

Gas provided for the call as a hexadecimal integer. Defaults to a high limit if omitted.

gasPrice · string

Gas price in wei as a hexadecimal integer. For legacy transactions. Optional.

maxFeePerGas · string

EIP-1559 maximum total fee per gas. Optional.

maxPriorityFeePerGas · string

EIP-1559 maximum priority fee per gas. Optional.

value · string

Value transferred in wei as a hexadecimal integer. Optional.

data · string

ABI-encoded call data: the 4-byte function selector followed by encoded arguments. Optional.

block · string · required

Block number in hex, or "latest", "pending", "safe", "finalized", "earliest".

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Returns

result · string

The return value of the call as a hex-encoded byte array.

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Error Codes

Code	Message	Description
-32000	execution reverted	The call reverted. The data field in the error object contains the ABI-encoded revert reason when available.

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Example

Standard (latest)

curl https://mainnet.base.org \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_call",
    "params": [
      {
        "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "data": "0x70a082310000000000000000000000004200000000000000000000000000000000000006"
      },
      "latest"
    ],
    "id": 1
  }'