Documentation Index
Fetch the complete documentation index at: https://docs.quantumapi.io/llms.txt
Use this file to discover all available pages before exploring further.
qc_getTransactionCount
Returns the number of transactions sent from an address (nonce).
| Parameter | Type | Description |
|---|
address | string | 20-byte address (hex) |
blockNumber | string | Block number (hex) or tag |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_getTransactionCount","params":["0xff81e5c74e14db5b4ee407d66b1b063c8f305c51","latest"],"id":1}'
{
"jsonrpc": "2.0",
"id": 1,
"result": "0x5"
}
qc_sendTransaction
Signs and sends a transaction from an unlocked account on the node.
| Parameter | Type | Description |
|---|
from | string | Sender address |
to | string | Recipient address |
value | string | Value in wei (hex) |
gas | string | Gas limit (hex) |
gasPrice | string | Gas price in wei (hex) |
data | string | Contract call data (hex) |
nonce | string | Transaction nonce (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "qc_sendTransaction",
"params": [{
"from": "0xff81e5c74e14db5b4ee407d66b1b063c8f305c51",
"to": "0x1234567890abcdef1234567890abcdef12345678",
"value": "0xde0b6b3a7640000",
"gas": "0x5208"
}],
"id": 1
}'
{
"jsonrpc": "2.0",
"id": 1,
"result": "0xabc123...def456"
}
This method requires the sender account to be unlocked on the node. For production signing, use the Custody API or qc_sendRawTransaction with an externally signed payload.
qc_sendRawTransaction
Submits a pre-signed raw transaction. This is the standard method for submitting transactions signed by external key management systems.
| Parameter | Type | Description |
|---|
signedTxData | string | RLP-encoded signed transaction (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_sendRawTransaction","params":["0xf86c..."],"id":1}'
{
"jsonrpc": "2.0",
"id": 1,
"result": "0xabc123...def456"
}
qc_getTransactionByHash
Returns transaction details by transaction hash.
| Parameter | Type | Description |
|---|
txHash | string | 32-byte transaction hash (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_getTransactionByHash","params":["0xabc123...def456"],"id":1}'
{
"jsonrpc": "2.0",
"id": 1,
"result": {
"hash": "0xabc123...def456",
"nonce": "0x5",
"blockHash": "0xdef...789",
"blockNumber": "0x1a4",
"transactionIndex": "0x0",
"from": "0xff81...c51",
"to": "0x1234...5678",
"value": "0xde0b6b3a7640000",
"gas": "0x5208",
"gasPrice": "0x3b9aca00",
"input": "0x"
}
}
qc_getTransactionReceipt
Returns the receipt of a mined transaction.
| Parameter | Type | Description |
|---|
txHash | string | 32-byte transaction hash (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_getTransactionReceipt","params":["0xabc123...def456"],"id":1}'
{
"jsonrpc": "2.0",
"id": 1,
"result": {
"transactionHash": "0xabc123...def456",
"transactionIndex": "0x0",
"blockHash": "0xdef...789",
"blockNumber": "0x1a4",
"from": "0xff81...c51",
"to": "0x1234...5678",
"gasUsed": "0x5208",
"cumulativeGasUsed": "0x5208",
"contractAddress": null,
"logs": [],
"status": "0x1",
"effectiveGasPrice": "0x3b9aca00"
}
}
qc_getRawTransactionByHash
Returns the RLP-encoded raw transaction by hash.
| Parameter | Type | Description |
|---|
txHash | string | 32-byte transaction hash (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_getRawTransactionByHash","params":["0xabc123...def456"],"id":1}'
qc_getTransactionByBlockNumberAndIndex
Returns a transaction by block number and transaction index.
| Parameter | Type | Description |
|---|
blockNumber | string | Block number (hex) or tag |
txIndex | string | Transaction index (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_getTransactionByBlockNumberAndIndex","params":["latest","0x0"],"id":1}'
qc_getTransactionByBlockHashAndIndex
Returns a transaction by block hash and transaction index.
| Parameter | Type | Description |
|---|
blockHash | string | 32-byte block hash (hex) |
txIndex | string | Transaction index (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_getTransactionByBlockHashAndIndex","params":["0xdef...789","0x0"],"id":1}'
qc_getRawTransactionByBlockNumberAndIndex
Returns the RLP-encoded raw transaction by block number and index.
| Parameter | Type | Description |
|---|
blockNumber | string | Block number (hex) or tag |
txIndex | string | Transaction index (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_getRawTransactionByBlockNumberAndIndex","params":["latest","0x0"],"id":1}'
qc_getRawTransactionByBlockHashAndIndex
Returns the RLP-encoded raw transaction by block hash and index.
| Parameter | Type | Description |
|---|
blockHash | string | 32-byte block hash (hex) |
txIndex | string | Transaction index (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_getRawTransactionByBlockHashAndIndex","params":["0xdef...789","0x0"],"id":1}'
qc_getBlockTransactionCountByNumber
Returns the number of transactions in a block by block number.
| Parameter | Type | Description |
|---|
blockNumber | string | Block number (hex) or tag |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_getBlockTransactionCountByNumber","params":["latest"],"id":1}'
qc_getBlockTransactionCountByHash
Returns the number of transactions in a block by block hash.
| Parameter | Type | Description |
|---|
blockHash | string | 32-byte block hash (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_getBlockTransactionCountByHash","params":["0xdef...789"],"id":1}'
qc_sign
Signs data with an unlocked account. Returns the signature.
| Parameter | Type | Description |
|---|
address | string | Signer address |
data | string | Data to sign (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_sign","params":["0xff81e5c74e14db5b4ee407d66b1b063c8f305c51","0xdeadbeef"],"id":1}'
Requires the account to be unlocked on the node.
qc_signTransaction
Signs a transaction without broadcasting it. Returns the RLP-encoded signed transaction.
| Parameter | Type | Description |
|---|
txObject | object | Transaction object (same fields as qc_sendTransaction) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "qc_signTransaction",
"params": [{
"from": "0xff81e5c74e14db5b4ee407d66b1b063c8f305c51",
"to": "0x1234567890abcdef1234567890abcdef12345678",
"value": "0xde0b6b3a7640000",
"gas": "0x5208"
}],
"id": 1
}'
qc_pendingTransactions
Returns all pending transactions in the node’s transaction pool.
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"qc_pendingTransactions","params":[],"id":1}'
qc_fillTransaction
Fills in default values (nonce, gas, gas price) for a transaction object without signing or submitting it.
| Parameter | Type | Description |
|---|
txObject | object | Partial transaction object |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "qc_fillTransaction",
"params": [{
"from": "0xff81e5c74e14db5b4ee407d66b1b063c8f305c51",
"to": "0x1234567890abcdef1234567890abcdef12345678",
"value": "0xde0b6b3a7640000"
}],
"id": 1
}'
qc_resend
Replaces a pending transaction with new gas parameters. The original transaction is matched by from, nonce, and other fields.
| Parameter | Type | Description |
|---|
txObject | object | Original transaction object to match |
gasPrice | string | New gas price (hex) |
gasLimit | string | New gas limit (hex) |
curl -X POST https://api.quantumapi.io/v1/rpc \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"method": "qc_resend",
"params": [{
"from": "0xff81e5c74e14db5b4ee407d66b1b063c8f305c51",
"to": "0x1234567890abcdef1234567890abcdef12345678",
"value": "0xde0b6b3a7640000",
"nonce": "0x5",
"gasPrice": "0x3b9aca00",
"gas": "0x5208"
}, "0x77359400", "0x5208"],
"id": 1
}'
