Get real-time pending transactions from a local fullnode's mempool

[leeeddin]

🚀 Feature Request

Is there any method that can get real-time pending transactions from a local fullnode's mempool? Like the eth_subscribe newPendingTransactions method in geth.
I tried to use node's /v1/transactions API and it doesn't seem like would return pending transactions.

[davidiw]

are you looking for all pending transactions or just your own? You can query the transaction hash and get its status from mempool.

[diwu1989]

Reading the full mempool via a stream is mostly used for sandwiching / arbitrage / MEV.

Pro of building this API into Aptos-core:

• lower entry to barrier for people to run MEV on the network

Con of building this API into Aptos-core:

• MEV / sandwich / frontrunning, etc... becomes a lot easier

[leeeddin]

Took a little peek at the code, seems like the /v1/transactions API will only retrieve on-chain committed transactions. The get transaction by hash API will retrieve transactions in mempool if they are not in storage. Guess I need to modify the client for now to retrieve all pending transactions(not just my own).

Thanks.

[github-actions]

This issue is stale because it has been open 45 days with no activity. Remove the stale label or comment - otherwise this will be closed in 15 days.

[vivekascoder]

can someone update on what's the scene of MEV on aptos as of now.

[greyireland]

+1