Pending versus confirmed nonce for an address on 16 EVM chains
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.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
967 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/chain/pending-nonce
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.01 | 967 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"chain": "ethereum"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$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"
}