txpool_inspect

txpool_inspect returns a human-readable text summary of every pending and queued transaction sitting in an OP Mainnet node's transaction pool — the OP Stack rollup that settles to Ethereum L1 and uses ETH for gas. The response is organised by sender address and then by nonce, with each entry rendered as a short string showing recipient, value in wei, and gas. Send the call to https://optimism.therpc.io/YOUR_API_KEY (chain ID 10, 0xa) to get an at-a-glance view of what is waiting to be included by the sequencer.

Use cases

• Debug a stuck OP Mainnet transaction by locating it under its sender address and nonce to see whether it is pending or stranded in the queued set behind a nonce gap.
• Audit pool contents during a congestion incident to understand which senders are flooding the mempool and at what gas levels.

Parameters

Este método no acepta parámetros. Pasa un array vacío [].

Response

Example request

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

Try it live in the Optimism playground.

Errors & troubleshooting

Common pitfalls

• Belongs to the txpool namespace and is only served by Geth-compatible clients (op-geth); other OP Stack execution clients may not expose it, returning a "method not found" error.
• The string format is meant for human eyes, not parsers — for programmatic access to full transaction objects use txpool_content instead.
• Under heavy mempool activity the response can grow very large; when you only need totals, reach for the lightweight txpool_status counts.

Supported networks

• Mainnet — Chain ID: 10
• Sepolia — Chain ID: 11155420

See also

• txpool_status

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