- Protocol — protocol name.
- Protocol availability — details of the mempool availability on the protocol level.
- Chainstack availability — how to access the protocol’s mempool on Chainstack.
- Client configuration — the default node client configuration for the mempool as deployed at Chainstack.
- Example — a simple curl example. Remember to replace YOUR_CHAINSTACK_NODE with your Chainstack node endpoint for that particular protocol.
Protocol | Protocol availability | Chainstack availability | Client configuration | Example |
---|---|---|---|---|
Ethereum | Available to everyone | Archive with Debug and trace APIs | 4096 pending transactions | Ethereum txpool_content |
Polygon | Available to everyone | Archive with Debug and trace APIs | 4096 pending transactions | Polygon txpool_content |
BNB Smart Chain | Available to everyone | Archive with Debug and trace APIs | 4096 pending transactions | BSC txpool_content |
Base | Private to Sequencer. | N/A | N/A | N/A |
Avalanche | Available only to validators. | Not available on Chainstack | N/A | N/A |
TON | External messages are available in mempool | Available | ||
Arbitrum | No mempool. Only Sequencer FIFO. | N/A | N/A | N/A |
zkSync Era | Sequencer only | N/A | N/A | N/A |
Polygon zkEVM | Sequencer only | N/A | N/A | N/A |
Optimism | Private to Sequencer | N/A | N/A | N/A |
Oasis Saphire | Confidential mempool | N/A | N/A | N/A |
NEAR | No mempool | N/A | N/A | N/A |
Aurora | No mempool | N/A | N/A | N/A |
Solana | No mempool | N/A | N/A | N/A |
Scroll | Publicly available through Sequencer. | N/A | N/A | N/A |
Ronin | Available to everyone | Not available on Chainstack | N/A | N/A |
Aptos | Available to everyone but there is no transaction stream | Full or archive node deployment | N/A | N/A |
Gnosis Chain | Available to everyone | On a dedicated node. | Any configuration | Gnosis txpool_content |
Cronos | No mempool. Only Sequencer FIFO. | N/A | N/A | N/A |
Filecoin | Available to everyone | Full node deployment | 20,000 pending messages | Filecoin MpoolPending |
Sonic | Available to everyone | On a dedicated node | 4096 pending transactions | txpool_* |
Fantom | Available to everyone | On a dedicated node | 4096 pending transactions | txpool_* |
TRON | Available to everyone | On a dedicated node | 4096 pending transactions | txpool_* |
Starknet | Private to Sequencer | N/A | N/A | N/A |
Tezos | Available to everyone | Full or archive node deployment | 240 blocks | Tezos pending_operations |
Bitcoin | Available to everyone | Full node deployment | mempool size: 300 MB mempool tx expiry: 336 hours (14 days) | Bitcoin getrawmempool |