eth_uninstallFilter

PancakeSwap swaps and Venus lending keep BEP-20 log volume high on BNB Smart Chain, the BNB-fee network. Every filter you open with eth_newFilter, eth_newBlockFilter, or eth_newPendingTransactionFilter reserves polling state inside the node. eth_uninstallFilter tears that state back down. Hand it the hex filter ID and the node deletes the matching subscription, releasing whatever it was holding. Send the request to https://bsc.therpc.io/YOUR_API_KEY on chain ID 56. The same call handles all three filter types, and it returns a boolean that tells you whether a live filter actually carried that ID.

Use cases

• Release the node resources held by a BEP-20 transfer log filter the moment a monitoring session finishes, instead of waiting for the idle timeout.
• Iterate over every filter ID your service opened and uninstall them in sequence during graceful application shutdown.

Parameters

Response

Example request

1curl https://bsc.therpc.io/YOUR_API_KEY \
2  -X POST \
3  -H "Content-Type: application/json" \
4  -d '{
5    "jsonrpc": "2.0",
6    "method": "eth_uninstallFilter",
7    "params": ["0x1"],
8    "id": 1
9  }'

Try it live in the BNB Smart Chain playground.

Errors & troubleshooting

Common pitfalls

• A false result is not a failure. It means no live filter carried that ID, usually because the filter already lapsed on its own. Treat it as an idempotent confirmation rather than an error.
• Idle filters get reaped automatically after roughly five minutes. On a busy BSC node, calling this method explicitly keeps memory pressure down instead of leaning on that timeout.

Supported networks

• Mainnet — Chain ID: 56
• Testnet — Chain ID: 97

See also

• eth_newFilter
• eth_newBlockFilter
• eth_newPendingTransactionFilter
• eth_getFilterChanges

1curl https://bsc.therpc.io/YOUR_API_KEY \
2  -X POST \
3  -H 'Content-Type: application/json' \
4  -d '{"jsonrpc":"2.0","id":1,"method":"eth_uninstallFilter","params":["0x1"]}'