Transaction Parameters

The Transaction Parameters trigger gives you granular control over exactly which transactions produce alerts. You can match on any field of the transaction, receipt, or block — from the sender address and gas price to block-level metadata.

Use cases

Gas price anomaly detection

Alert when a transaction arrives with an unusually high gas price, which can indicate front-running or a misconfigured bot.

Large value transfers

Fire an alert whenever a transaction carries more than a threshold amount of native token (Value field).

Specific sender monitoring

Watch for transactions from a particular address without adding it to a blacklist — useful for monitoring partner wallets or known bots.

Receipt and status checks

Trigger on receipt fields such as gas used or cumulative gas to catch unexpectedly expensive transactions.

Configuration

Trigger Name

Enter a descriptive label, e.g. High Gas Price Detected.

From contract (optional)

Toggle From contract on to restrict the trigger to transactions that originate from a smart contract (i.e., internal calls), rather than externally owned accounts.

Parameters

Configure one or more parameter rules. Each rule consists of:

Field	Description
Parameter	The transaction/block/receipt field to inspect (see full list below).
Operator	Comparison operator: `=`, `!=`, `>`, `>=`, `<`, `<=`, `contains`, `startsWith`, `endsWith`.
Value	The value to compare against.

Enable Choose multiple parameters to add additional rules. Multiple rules are combined with AND logic — all rules must match for the trigger to fire.

Severity

Choose the alert severity: Critical, High, Medium, Low, or Info.

Notification Channels

Select one or more channels to receive the alert.

Available parameters

Parameter	Description
From	Sender address of the transaction.
To	Recipient address of the transaction.
Value	Native token amount sent with the transaction (in wei).
Gas	Gas limit set by the sender.
Gas Price	Gas price set by the sender (in wei).
Max Fee Per Gas	Maximum total fee per gas unit (EIP-1559).
Max Priority Fee Per Gas	Maximum priority fee (tip) per gas unit (EIP-1559).
Nonce	Sender’s transaction nonce.
Input	Raw calldata of the transaction.
Transaction Hash	Unique hash identifying the transaction.
Transaction Index	Position of the transaction within its block.
Transaction Type	Transaction type (0 = legacy, 1 = access list, 2 = EIP-1559).
Timestamp	Unix timestamp of the block containing the transaction.
Block Number	Height of the block containing the transaction.
Block Hash	Hash of the block.
Block Gas Limit	Maximum gas allowed in the block.
Block Gas Used	Total gas used by all transactions in the block.
Block Base Fee Per Gas	Base fee per gas in the block (EIP-1559).
Block Miner	Address of the block producer.
Block Difficulty	Proof-of-work difficulty of the block.
Block Total Difficulty	Cumulative difficulty up to this block.
Block Size	Size of the block in bytes.
Block Transaction Count	Number of transactions in the block.
Block Parent Hash	Hash of the parent block.
Block Nonce	Block nonce used in proof-of-work.
Block SHA-3 Uncles	SHA3 hash of the uncle blocks list.
Block State Root	Root hash of the state trie after the block.
Block Transactions Root	Root hash of the transactions trie.
Block Receipts Root	Root hash of the receipts trie.
Block Logs Bloom	Bloom filter for log entries in the block.
Block Extra Data	Extra data field set by the block producer.
Receipt Status	Transaction receipt status (1 = success, 0 = failure).
Receipt Gas Used	Gas used by this transaction specifically.
Receipt Cumulative Gas Used	Total gas used in the block up to and including this transaction.
Receipt Effective Gas Price	Actual gas price paid (base fee + tip).
Receipt Contract Address	Contract address created by this transaction, if any.
Receipt Root	Post-transaction state root (pre-Byzantium).

​Use cases

​Configuration

​Available parameters

Use cases

Configuration

Available parameters