The namespace txpool API gives you access to several non-standard RPC methods to inspect the contents of the transaction pool containing all the currently pending transactions as well as the ones queued for future processing.
txpool_content
The content inspection property can be queried to list the exact details of all the transactions currently pending for inclusion in the next block(s), as well as the ones that are being scheduled for future execution only.
The result is an object with two fields pending and queued. Each of these fields is associative arrays, in which each entry maps an origin-address to a batch of scheduled transactions. These batches themselves are maps associating nonces with actual transactions.
{"method": "txpool_content"}
Parameters
None
Return Value
The content of the transaction pool.
Example
Console
Copy > txpool.content
{
pending: {
0x18352126c43E4EC314E41b632A0c1af6b233260b: {
733: {
blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
blockNumber: "0x0",
from: "0x18352126c43e4ec314e41b632a0c1af6b233260b",
gas: "0x5208",
gasPrice: "0x0",
input: "0x",
nonce: "0x2dd",
signatures: [...],
to: "0x18352126c43e4ec314e41b632a0c1af6b233260b",
transactionIndex: "0x0",
txHash: "0xeeac2d4f1255e50659cd57a58e74e46d2af7122d91e347ca341d4e2cd7da689b",
type: "TxTypeLegacyTransaction",
value: "0x2"
},
},
0x952c9a710Ce70D58FD5C55d45c4479b82dEA6DAC: {
756: {
blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
blockNumber: "0x0",
from: "0x952c9a710ce70d58fd5c55d45c4479b82dea6dac",
gas: "0x5208",
gasPrice: "0x0",
input: "0x",
nonce: "0x2f4",
signatures: [...],
to: "0x6afe934786fe008c79577d85d8e1af1f6f14c73a",
transactionIndex: "0x0",
txHash: "0x0fad399b31b520e4af5bc9f2ea40de71854a7f3c41d5918d5ed120d1b4fc5154",
type: "TxTypeLegacyTransaction",
value: "0x1"
},
757: {
blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
blockNumber: "0x0",
from: "0x952c9a710ce70d58fd5c55d45c4479b82dea6dac",
gas: "0x5208",
gasPrice: "0x0",
input: "0x",
nonce: "0x2f5",
signatures: [...],
to: "0x18352126c43e4ec314e41b632a0c1af6b233260b",
transactionIndex: "0x0",
txHash: "0xdfc3053ce6c27fd4610bb2e103837c4435f27bb6bb9dfd56110cbd2bbe5ea7fa",
type: "TxTypeLegacyTransaction",
value: "0x1"
},
},
},
queued: {
0x7dCef85A0356c36a0B43772e1F7C2e80cE029b96: {
786: {
blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
blockNumber: "0x0",
from: "0x7dcef85a0356c36a0b43772e1f7c2e80ce029b96",
gas: "0x5208",
gasPrice: "0x0",
input: "0x",
nonce: "0x312",
signatures: [...],
to: "0x7dcef85a0356c36a0b43772e1f7c2e80ce029b96",
transactionIndex: "0x0",
txHash: "0xf90dab02c355b4f09d1b1f224380a278a03fc76d1fc7d866fb2ad2f503525717",
type: "TxTypeLegacyTransaction",
value: "0x0"
},
},
0xd5B94dd456040612d721A8Eae1e4E97a70b92812: {
742: {
blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
blockNumber: "0x0",
from: "0xd5b94dd456040612d721a8eae1e4e97a70b92812",
gas: "0x5208",
gasPrice: "0x0",
input: "0x",
nonce: "0x2e6",
signatures: [...],
to: "0xd5b94dd456040612d721a8eae1e4e97a70b92812",
transactionIndex: "0x0",
txHash: "0x6266969f1221b258bb2ce6fd2bcce88ad76be1e2b3eb5c770311a2bc0c2cc74a",
type: "TxTypeLegacyTransaction",
value: "0x2"
},
}
}
} HTTP RPC
Copy $ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"txpool_content","id":1}' https://public-en-baobab.klaytn.net
{"jsonrpc":"2.0","id":1,"result":{"pending":{},"queued":{}}}
#There is no pending transaction nor queued transaction. txpool_inspect
The inspect inspection property can be queried to list a textual summary of all the transactions currently pending for inclusion in the next block(s), as well as the ones that are being scheduled for future execution only. This is a method specifically tailored to developers to quickly see the transactions in the pool and find any potential issues.
The result is an object with two fields pending and queued. Each of these fields is associative arrays, in which each entry maps an origin-address to a batch of scheduled transactions. These batches themselves are maps associating nonces with transactions summary strings.
{"method": "txpool_inspect"}
Parameters
None
Return Value
A list of pending and queued transactions.
Example
Console
Copy > txpool.inspect
{
pending: {
0x26588a9301b0428d95e6fc3a5024fce8bec12d51: {
31813: "0x3375ee30428b2a71c428afa5e89e427905f95f7e: 0 peb + 500000 gas × 25000000000 peb"
},
0x2a65aca4d5fc5b5c859090a6c34d164135398226: {
563662: "0x958c1fa64b34db746925c6f8a3dd81128e40355e: 1051546810000000000 peb + 90000 gas × 25000000000 peb",
563663: "0x77517b1491a0299a44d668473411676f94e97e34: 1051190740000000000 peb + 90000 gas × 25000000000 peb",
563664: "0x3e2a7fe169c8f8eee251bb00d9fb6d304ce07d3a: 1050828950000000000 peb + 90000 gas × 25000000000 peb",
563665: "0xaf6c4695da477f8c663ea2d8b768ad82cb6a8522: 1050544770000000000 peb + 90000 gas × 25000000000 peb",
563666: "0x139b148094c50f4d20b01caf21b85edb711574db: 1048598530000000000 peb + 90000 gas × 25000000000 peb",
563667: "0x48b3bd66770b0d1eecefce090dafee36257538ae: 1048367260000000000 peb + 90000 gas × 25000000000 peb"
},
0x9174e688d7de157c5c0583df424eaab2676ac162: {
3: "0xbb9bc244d798123fde783fcc1c72d3bb8c189413: 30000000000000000000 peb + 85000 gas × 25000000000 peb"
},
0xb18f9d01323e150096650ab989cfecd39d757aec: {
777: "0xcd79c72690750f079ae6ab6ccd7e7aedc03c7720: 0 peb + 1000000 gas × 25000000000 peb"
},
0xb2916c870cf66967b6510b76c07e9d13a5d23514: {
2: "0x576f25199d60982a8f31a8dff4da8acb982e6aba: 26000000000000000000 peb + 90000 gas × 25000000000 peb"
},
0xbc0ca4f217e052753614d6b019948824d0d8688b: {
0: "0x2910543af39aba0cd09dbb2d50200b3e800a63d2: 1000000000000000000 peb + 50000 gas × 25000000000 peb"
},
0xea674fdde714fd979de3edf0f56aa9716b898ec8: {
70148: "0xe39c55ead9f997f7fa20ebe40fb4649943d7db66: 1000767667434026200 peb + 90000 gas × 25000000000 peb"
}
},
queued: {
0x0f6000de1578619320aba5e392706b131fb1de6f: {
6: "0x8383534d0bcd0186d326c993031311c0ac0d9b2d: 9000000000000000000 peb + 21000 gas × 25000000000 peb"
},
0x5b30608c678e1ac464a8994c3b33e5cdf3497112: {
6: "0x9773547e27f8303c87089dc42d9288aa2b9d8f06: 50000000000000000000 peb + 90000 gas × 25000000000 peb"
},
0x976a3fc5d6f7d259ebfb4cc2ae75115475e9867c: {
3: "0x346fb27de7e7370008f5da379f74dd49f5f2f80f: 140000000000000000 peb + 90000 gas × 25000000000 peb"
},
0x9b11bf0459b0c4b2f87f8cebca4cfc26f294b63a: {
2: "0x24a461f25ee6a318bdef7f33de634a67bb67ac9d: 17000000000000000000 peb + 90000 gas × 25000000000 peb",
6: "0x6368f3f8c2b42435d6c136757382e4a59436a681: 17990000000000000000 peb + 90000 gas × 25000000000 peb",
7: "0x6368f3f8c2b42435d6c136757382e4a59436a681: 17900000000000000000 peb + 90000 gas × 25000000000 peb"
}
}
} HTTP RPC
Copy $ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"txpool_inspect","id":1}' https://public-en-baobab.klaytn.net
{"jsonrpc":"2.0","id":1,"result":{"pending":{"0x1A789E38cD567a00b7Fb8e1D39100ac395fa463B":{"0":"0x87AC99835e67168d4f9a40580f8F5C33550bA88b: 0 peb + 99000000 gas × 25000000000 peb"},"0xAb552FC3d76de919c74435A4C6B04576a9763934":{"0":"0x87AC99835e67168d4f9a40580f8F5C33550bA88b: 0 peb + 99000000 gas × 25000000000 peb"}},"queued":{}}} txpool_status
The status inspection property can be queried for the number of transactions currently pending for inclusion in the next block(s), as well as the ones that are being scheduled for future execution only.
The result is an object with two fields pending and queued, each of which is a counter representing the number of transactions in that particular state.
{"method": "txpool_status"}
Parameters
None
Return Value
The number of pending transactions.
The number of queued transactions.
Example
Console
Copy > txpool.status
{
pending: 10,
queued: 7
} HTTP RPC
Copy $ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"txpool_status","id":1}' https://public-en-baobab.klaytn.net
{"jsonrpc":"2.0","id":1,"result":{"pending":"0x0","queued":"0x0"}} 