Check Ethereum gas before you complete checkout
Get a fresh fee estimate at the moment an Airtop browser workflow reaches checkout, so you can decide whether to proceed.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Get Gas Prices
Retrieves gas price estimates for likely transaction inclusion.
Why this helps
A checkout flow can reach the final step before you have checked whether the transaction fee still makes sense.
- Check fee estimates at a decision point in a browser workflow.
- Reduce manual switching between checkout and gas tools.
- Use the estimate to decide whether to continue or wait.
Setup
Build it in a few focused steps.
- 1Connect Airtop and Blocknative once in Notis.
- 2Create an automation and describe the checkout decision you want supported.
- 3Tell Notis to retrieve Blocknative gas estimates when the Airtop workflow reaches the checkout checkpoint.
- 4Choose a webhook trigger and where run reports should go.
- 5Test with one real checkout example and a transaction context that includes the needed chain.
Questions about this workflow
Does Airtop start this automation through a native event?
No. Airtop exposes no trigger events in this setup. Use a Notis webhook started by an HTTP request from your browser workflow.
Does the gas estimate complete the checkout?
No. The Blocknative action retrieves gas estimates. Your checkout workflow still handles its own continuation decision.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Airtop to Blocknative. A trigger fires from one place; an action lands in another.
Airtop triggers
Blocknative actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Configure Mempool Filters
Configures filters and decoding for Ethereum mempool transactions.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Get Gas Price Distribution
Retrieves the current breakdown of gas prices in the mempool.
Get Gas Oracles
Lists supported gas oracles by blockchain network.
Get Gas Prices
Retrieves gas price estimates for likely transaction inclusion.
Get Supported Chains
Lists supported blockchain networks for gas services.
Get Base Fee Estimates
Retrieves real-time estimates of Ethereum's base and transaction fees for the next five blocks.
Subscribe Multichain
Prepares a subscription to real-time transaction or account events across supported chains.
Subscribe Transaction Hash
Prepares a subscription to status changes for an Ethereum transaction.
Connect any two apps with Notis in the middle.
Airtop and Blocknative, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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