signatureSubscribe RPC Method

As of May 1, 2026, this WebSocket method is billed based on metered data usage: 0.1 MB = 15 API credits. Learn more about WebSocket billing.

Parameters

tx_sig

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object

object

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commitment

string

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finalized

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confirmed

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processed

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Returns

result

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Notification Format:

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result

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Request

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const web3 = require("@solana/web3.js");
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(async () => {
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  const txId =
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    "2KDXTegj8bDQRXJYQeJtFYHrYL6U68EPBHK3zGdkwwcKA1pFBvkTwmdmE9mME9BQkVakg73WssPzgGgbEvL52ivw";
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  const solanaConnection = new web3.Connection("https://docs-demo.solana-mainnet.quiknode.pro/", {
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    wsEndpoint: "",
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  });
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  solanaConnection.onSignature(txId, (updatedTxInfo, context) =>
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    console.log("Updated account info: ", updatedTxInfo)
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  );
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})();
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const web3 = require("@solana/web3.js");
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(async () => {
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  const txId =
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    "2KDXTegj8bDQRXJYQeJtFYHrYL6U68EPBHK3zGdkwwcKA1pFBvkTwmdmE9mME9BQkVakg73WssPzgGgbEvL52ivw";
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  const solanaConnection = new web3.Connection("https://docs-demo.solana-mainnet.quiknode.pro/", {
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    wsEndpoint: "",
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  });
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  solanaConnection.onSignature(txId, (updatedTxInfo, context) =>
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    console.log("Updated account info: ", updatedTxInfo)
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  );
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})();
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import solana
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import asyncio
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from asyncstdlib import enumerate
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from solana.rpc.websocket_api import connect
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async def main():
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    async with connect("") as websocket:
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        await websocket.signature_subscribe('51y9Hf2cFzrUPDH24qvL6b6PtPMDGQSX3WwiHsSvkdfGiFTKdoJwGkvqS3gny6XNPLtUtRwGERAs45639EfR5XfT')
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        first_resp = await websocket.recv()
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        subscription_id = first_resp.result
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        async for idx, msg in enumerate(websocket):
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            print(msg)
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asyncio.run(main())

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import solana
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import asyncio
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from asyncstdlib import enumerate
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from solana.rpc.websocket_api import connect
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async def main():
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    async with connect("") as websocket:
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        await websocket.signature_subscribe('51y9Hf2cFzrUPDH24qvL6b6PtPMDGQSX3WwiHsSvkdfGiFTKdoJwGkvqS3gny6XNPLtUtRwGERAs45639EfR5XfT')
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        first_resp = await websocket.recv()
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        subscription_id = first_resp.result
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        async for idx, msg in enumerate(websocket):
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            print(msg)
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asyncio.run(main())

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wscat -c  \ 
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# wait for connection 
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{"id":1,"jsonrpc":"2.0","method":"signatureSubscribe","params":["51y9Hf2cFzrUPDH24qvL6b6PtPMDGQSX3WwiHsSvkdfGiFTKdoJwGkvqS3gny6XNPLtUtRwGERAs45639EfR5XfT"]}

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wscat -c  \ 
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# wait for connection 
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{"id":1,"jsonrpc":"2.0","method":"signatureSubscribe","params":["51y9Hf2cFzrUPDH24qvL6b6PtPMDGQSX3WwiHsSvkdfGiFTKdoJwGkvqS3gny6XNPLtUtRwGERAs45639EfR5XfT"]}

Response

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{
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  "jsonrpc": "2.0",
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  "result": 0,
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  "id": 1
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}

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{
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  "jsonrpc": "2.0",
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  "result": 0,
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  "id": 1
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}

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