qc_call
Executes a message call immediately without creating a transaction on the blockchain. Commonly used to read data from smart contracts.
| Parameter | Type | Description |
|---|
txObject | object | Transaction call object |
blockNumber | string | Block number (hex) or tag |
| Field | Type | Required | Description |
|---|
from | string | No | Sender address |
to | string | Yes | Contract address |
gas | string | No | Gas limit (hex) |
gasPrice | string | No | Gas price (hex) |
value | string | No | Value in wei (hex) |
data | string | No | ABI-encoded call data (hex) |
curl -X POST http://localhost:8545 \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "qc_call",
"params": [{
"to": "0x1234567890abcdef1234567890abcdef12345678",
"data": "0x70a08231000000000000000000000000ff81e5c74e14db5b4ee407d66b1b063c8f305c51"
}, "latest"],
"id": 1
}'
{
"jsonrpc": "2.0",
"id": 1,
"result": "0x00000000000000000000000000000000000000000000000000000000000003e8"
}
The data field above is an ABI-encoded balanceOf(address) call. Use cast calldata or an ABI encoder to build these.
qc_createAccessList
Creates an EIP-2930 access list for a transaction. The access list identifies storage slots and addresses the transaction will access, which can reduce gas costs.
| Parameter | Type | Description |
|---|
txObject | object | Transaction call object |
blockNumber | string | Block number (hex) or tag |
curl -X POST http://localhost:8545 \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "qc_createAccessList",
"params": [{
"from": "0xff81e5c74e14db5b4ee407d66b1b063c8f305c51",
"to": "0x1234567890abcdef1234567890abcdef12345678",
"data": "0x70a08231000000000000000000000000ff81e5c74e14db5b4ee407d66b1b063c8f305c51"
}, "latest"],
"id": 1
}'
{
"jsonrpc": "2.0",
"id": 1,
"result": {
"accessList": [
{
"address": "0x1234567890abcdef1234567890abcdef12345678",
"storageKeys": [
"0x0000000000000000000000000000000000000000000000000000000000000001"
]
}
],
"gasUsed": "0x5c68"
}
}
