pending_transaction

Make sure you're connected.

Request

Every new transaction:

{"jsonrpc":"2.0","id":2,"method":"subscribe","params":["pending_transaction"]}

Specific pending transaction:

{"jsonrpc":"2.0","id":2,"method":"subscribe","params":["pending_transaction",{"hash":"0xf16c9f57349e6d094ceba3fadf612da3f68802d8fbf0dd06b52ed7da56b43a81"}]}

Param	Type	Description
hash	`string`	The pending transaction hash.

Response

"result": {
  "blockchainId": "1c9c969065fcd1cf",
  "hash": "0x7acf9d893184af7bffd22145a4b7a8ecda4d37bbf5c305175c7ae2fd7cfd8dea",
  "nonce": 167253,
  "blockHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "blockNumber": -1,
  "transactionIndex": 0,
  "from": "0xc5341278a92e2bd8203ab931c6780c15d367713f",
  "to": "0x8e766f57f7d16ca50b4a0b90b88f6468a09b0439",
  "value": 0,
  "input": "0xa9059cbb000000000000000000000000f8452b266f4a37295a3c067865da4d68f269490c000000000000000000000000000000000000000000000097f3e82b0a7cda4000",
  "gasPrice": 13333333333,
  "gas": 90000,
  "createdAt": 1557876078585,
  "createdAtNanoseconds": 0,
  "optionalProperties": {
    "r": "0x10965cf3120fb98952f9b8a8696f8ebaef142a96a437b22a74589ac324423903",
    "s": "0x60a50374670e4f97e2c15f959acd2d0e45cf82d7aad9cf6f8b8903235560dbe3",
    "v": 37
  }
}

Example

const WebSocket = require('ws');
const ws = new WebSocket('wss://ws.web3api.io', {headers: {x-api-key:'<api_key>'}});

ws.on('open', () => {
  ws.send(JSON.stringify({
      jsonrpc: '2.0',
      method: 'subscribe',
      params: ['pending_transaction', {hash: '0x6c80ebbe94deb54d84e7d22b0eac014275d3a2df97e5afa0e7bf408ae9bc8b22'}],
      id: 1,
    }));
});

ws.on('message', data => {
  console.log(JSON.stringify(JSON.parse(data), null, 2));
});

Supported Blockchains

Blockchain	Network	Slug (x-amberdata-blockchain-id)
Bitcoin	Mainnet	bitcoin-mainnet
Litecoin	Mainnet	litecoin-mainnet
Ethereum	Mainnet	ethereum-mainnet