txpool_status

txpool_status returns the number of pending and queued transactions in a Base node's transaction pool, both as hex-encoded integers. Pending transactions are ready for inclusion in the next block; queued ones are waiting behind a nonce gap. Base is Coinbase's OP Stack optimistic rollup that settles to Ethereum and uses ETH for gas, where transactions queue in the sequencer's pool before being ordered into ~2-second blocks — so these two counts are a cheap read on how deep the current backlog is. Query it at https://base.therpc.io/YOUR_API_KEY on chain ID 8453 (hex 0x2105).

Use cases

• Monitor Base mempool depth to detect congestion and bump the ETH gas price you set on outgoing transactions when the pending count spikes.
• Feed a dashboard gauge that shows the current Base transaction backlog by decoding the pending and queued hex counts to decimals at a regular interval.

Parameters

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Response

Example request

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

Try it live in the Base playground.

Errors & troubleshooting

Common pitfalls

• txpool_status is part of the txpool namespace exposed only by Geth-compatible Base clients; other implementations return "method not found."
• The counts are an instantaneous snapshot and shift fast — on Base's ~2-second blocks the pool drains and refills constantly, so do not cache the result aggressively or treat a single reading as stable.

Supported networks

• Mainnet — Chain ID: 8453
• Sepolia — Chain ID: 84532

See also

• txpool_inspect

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