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Notis

Monitor urgent transactions from a webhook

Start status tracking the moment another system flags a transaction.

Trigger

Webhook received

Notis starts this workflow when an external tool or custom backend sends an HTTP request.

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

Urgent transaction alerts lose value when monitoring setup waits for manual intervention.

  • Start monitoring from an external alert
  • Shorten response time for urgent transactions
  • Keep the monitoring handoff consistent

Setup

Build it in a few focused steps.

  • 1Connect Blocknative in Notis.
  • 2Create a webhook automation for urgent transaction monitoring.
  • 3Describe that Notis should read the incoming hash and chain and prepare a Blocknative transaction subscription.
  • 4Choose the webhook trigger and report destination.
  • 5Test with one valid webhook payload.

Questions about this workflow

What should the webhook include?

Include the transaction hash and chain required for the subscription.

Can it monitor a batch?

Create an instruction that handles each hash in the payload if your sender provides multiple hashes.

When this happens · Trigger

Do this · Action

Supported Triggers and Actions

Notis builds workflows that link Google Tasks to Blocknative. A trigger fires from one place; an action lands in another.

Google Tasks triggers

Blocknative actions

Recurring trigger

Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.

TriggerScheduled

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.

ActionInstant

Webhook trigger

Notis starts this workflow when an external tool or custom backend sends an HTTP request.

TriggerInstant

Get Gas Price Distribution

Tool to retrieve the current mempool gas price distribution breakdown. use when analyzing gas price trends or preparing fee strategies.

ActionInstant

New Task Created

Triggers when a new task is created in a Google Tasks list. Uses timestamp filtering (updatedMin) to efficiently detect new tasks.

TriggerPolling

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.

ActionInstant

New Task List Created

Triggers when a new Google Tasks task list is created. This trigger monitors Google Tasks and fires when new task lists are detected.

TriggerPolling

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.

ActionInstant

Task Details Changed

Triggers when a specific task's details change. This trigger monitors a single Google Task and fires when any of its details (title, notes, status, due date, completion, position) are modified.

TriggerPolling

Get Supported Chains

Tool to retrieve supported chains metadata. use when discovering available networks for blocknative gas services.

ActionInstant

Task List Changed

Triggers when a task list changes (title or content updates). This trigger monitors a specific Google Tasks list and fires when changes are detected.

TriggerPolling

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.

ActionInstant

Task Updated

Triggers when an existing task is updated in a Google Tasks list. This trigger monitors a specific task list and fires when tasks are modified.

TriggerPolling

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.

ActionInstant

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.

ActionInstant

Connect any two apps with Notis in the middle.

Google Tasks and Blocknative, or any other combination from 1,000+ integrations.

When this happens · Trigger

Do this · Action

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