Start monitoring a transaction after a WhatsApp confirmation
Turn a clear WhatsApp confirmation into a prepared Blocknative transaction subscription.
Trigger
Interactive Reply Received
Triggered when a customer taps a quick-reply button or selects an option from an interactive list message you sent.
Action
Subscribe Transaction Hash
Tool to subscribe to transaction state change events of an ethereum transaction hash. use after establishing a blocknative websocket connection to prepare the subscription message.
Why this helps
When a customer confirms an action in WhatsApp, someone still has to find the transaction hash and start monitoring it separately.
- Connects a customer's confirmation to transaction monitoring preparation.
- Reduces the chance that a confirmed transaction is forgotten.
- Uses the Blocknative transaction hash subscription action for an available Ethereum hash.
Setup
Build it in a few focused steps.
- 1Connect WhatsApp and Blocknative once in the Notis portal.
- 2Create an automation in Automations, New Automation, and give it a name.
- 3In one instruction, tell Notis to use a confirmed interactive reply to prepare a Blocknative subscription for the Ethereum transaction hash available in the conversation, and flag missing hashes for follow-up.
- 4Pick the WhatsApp Interactive Reply Received trigger and choose where run reports go.
- 5Test with one real interactive reply where the conversation already contains a valid transaction hash.
Questions about this workflow
Does the reply itself contain a transaction hash?
Not necessarily. The hash must be available in the message or conversation context Notis can access. If it is missing, Notis should request it instead of inventing one.
Does this guarantee ongoing monitoring?
The Blocknative action prepares a subscription message for an Ethereum transaction hash after a websocket connection is established. The action description does not say that it establishes the websocket or confirms an ongoing subscription.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Whatsapp to Blocknative. A trigger fires from one place; an action lands in another.
Whatsapp triggers
Blocknative actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Configure Mempool Filters
Tool to configure filters and abi decoding for ethereum mempool transactions. use after establishing a blocknative websocket connection to set up event filters and decoding.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Get Gas Price Distribution
Tool to retrieve the current mempool gas price distribution breakdown. use when analyzing gas price trends or preparing fee strategies.
Message Status Updated
Triggers when a WhatsApp message status changes. IMPORTANT LIMITATION: WhatsApp Cloud API does not provide a native polling endpoint for message status. Status updates are ONLY delivered via webhooks in real-time. This trigger cannot directly poll the WhatsApp API for status updates. This trigger will return empty results as WhatsApp does not support this operation. To track message status updates, you must: 1. Set up a webhook endpoint to receive status notifications from WhatsApp 2. Store the webhook data in your own database 3. Use a different mechanism to query your stored webhook data For more information, see: - https://developers.facebook.com/docs/whatsapp/cloud-api/webhooks
Get Gas Oracles
Tool to retrieve metadata on supported gas oracles per chain. use when you need to dynamically discover all available on-chain gas estimation oracles across networks.
New Message Received
Triggered in real time when your WhatsApp Business number receives an inbound message from a customer (text, media, location, or contact). Delivered via the Cloud API webhook.
Get Gas Prices
Tool to fetch gas price estimates for specific inclusion probabilities. use when you need gas price ranges for the next block or next ~10 seconds.
Interactive Reply Received
Triggered when a customer taps a quick-reply button or selects an option from an interactive list message you sent.
Get Supported Chains
Tool to retrieve supported chains metadata. use when discovering available networks for blocknative gas services.
Message Template Status Update
Triggered when the review status of a WhatsApp message template changes — for example approved, rejected, or flagged — on your WhatsApp Business Account.
Get Base Fee Estimates
Tool to get real-time predictions for base fee and blob base fee for the next 5 blocks. use when you need both 99% and 50% confidence estimates for upcoming blocks.
Subscribe Multichain
Tool to generate websocket subscription details for events across multiple chains. use when preparing to track a transaction hash or account address across chains via blocknative multichain sdk.
Subscribe Transaction Hash
Tool to subscribe to transaction state change events of an ethereum transaction hash. use after establishing a blocknative websocket connection to prepare the subscription message.
Connect any two apps with Notis in the middle.
Whatsapp and Blocknative, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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