{"slug":"saylorinnovations-com-api-chain-pending-nonce-a86052","title":"Pending versus confirmed nonce for an address on 16 EVM chains","host":"saylorinnovations.com","method":"GET","resource":"https://saylorinnovations.com/api/chain/pending-nonce","category":"other","description":"Pending versus confirmed nonce for an address on 16 EVM chains: the next nonce to use and how many of its transactions are waiting in the mempool.","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":967,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:137","eip155:42161","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"address":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","chain":"ethereum"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"address":{"description":"the sending address","type":"string"},"chain":{"description":"chain name (ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, gnosis, linea, scroll, mantle, blast, sonic, celo, berachain, unichain) or chain id","type":"string"}},"required":["chain","address"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"address":{"description":"the address that was queried","type":"string"},"chain":{"description":"the chain name that was queried","type":"string"},"chain_id":{"description":"EIP-155 chain id of that network","type":"number"},"confirmed_nonce":{"description":"transactions mined from this address (next nonce if nothing is in flight)","type":"number"},"has_pending":{"description":"true when at least one is waiting","type":["boolean","null"]},"next_nonce_to_use":{"description":"nonce to put on the next transaction","type":"number"},"note":{"description":"plain-language reading of the result","type":"string"},"pending_nonce":{"description":"nonce counting transactions in the node's mempool","type":["number","null"]},"pending_tx_count":{"description":"transactions waiting in the mempool","type":["number","null"]},"source":{"description":"where the data was read from","type":"string"}},"required":["chain","chain_id","address","confirmed_nonce","next_nonce_to_use","note","source"],"type":"object"},"type":{"const":"json","type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-21","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":967,"error":null}],"description_full":"Pending versus confirmed nonce for an address on 16 EVM chains: the next nonce to use and how many of its transactions are waiting in the mempool.","last_updated":"2026-10-21T04:11:11.42Z","schemes":["exact"]}