Transaction status on 16 EVM chains
Transaction status on 16 EVM chains: pending in the mempool or confirmed, execution result, fee against the base fee, nonce gap and confirmations.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
486 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-tx
| Category | Code and developer |
|---|---|
| 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 | $0.01 | 486 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"chain": "ethereum",
"hash": "0x4161950dcf2da21c66767c7935ecaffbb78042b5a1f369d93134decaee69247a"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"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"
},
"hash": {
"description": "the transaction hash (0x plus 64 hex characters)",
"type": "string"
}
},
"required": [
"chain",
"hash"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"block_number": {
"description": "block that included the transaction, null while pending",
"type": [
"number",
"null"
]
},
"chain": {
"description": "the chain name that was queried",
"type": "string"
},
"chain_id": {
"description": "EIP-155 chain id of that network",
"type": "number"
},
"confirmations": {
"description": "blocks on top of the including block, counting it",
"type": [
"number",
"null"
]
},
"current_base_fee_gwei": {
"description": "base fee of the latest block in gwei",
"type": [
"number",
"null"
]
},
"execution": {
"description": "success or reverted, once mined",
"type": [
"string",
"null"
]
},
"fee_below_base_fee": {
"description": "true when a pending transaction's fee cap is under the current base fee",
"type": [
"boolean",
"null"
]
},
"from": {
"description": "sender address",
"type": [
"string",
"null"
]
},
"gas_limit": {
"description": "gas limit set on the transaction",
"type": "number"
},
"gas_price_gwei": {
"description": "gas price in gwei (effective price once mined)",
"type": [
"number",
"null"
]
},
"gas_used": {
"description": "gas actually used, once mined",
"type": [
"number",
"null"
]
},
"hash": {
"description": "the transaction hash that was looked up",
"type": "string"
},
"max_fee_per_gas_gwei": {
"description": "fee cap in gwei for type-2 transactions",
"type": [
"number",
"null"
]
},
"max_priority_fee_gwei": {
"description": "tip cap in gwei for type-2 transactions",
"type": [
"number",
"null"
]
},
"native_symbol": {
"description": "native currency of the chain",
"type": "string"
},
"nonce": {
"description": "sender nonce of this transaction",
"type": [
"number",
"null"
]
},
"nonce_ahead_of_account": {
"description": "how many nonces a pending transaction sits ahead of the sender's confirmed nonce",
"type": [
"number",
"null"
]
},
"note": {
"description": "plain-language reading of the result",
"type": "string"
},
"source": {
"description": "where the data was read from",
"type": "string"
},
"status": {
"description": "pending, confirmed or not_found",
"type": "string"
},
"to": {
"description": "recipient or contract, null for contract creation",
"type": [
"string",
"null"
]
},
"value_native": {
"description": "value sent in the native currency",
"type": "number"
}
},
"required": [
"chain",
"chain_id",
"hash",
"status",
"note",
"source"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}