Send Blocknative mempool alerts to Slack
Keep the right people informed about important pending transactions without watching the mempool all day.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Post message to channel
Deprecated: posts a message to a slack channel, direct message, or private channel. use `send message` instead.
Why this helps
Founders miss time sensitive transaction activity while switching between wallets, explorers, and team chat.
- Reduce manual monitoring
- Surface urgent transactions quickly
- Keep a shared audit trail in Slack
Setup
Build it in a few focused steps.
- 1Connect Blocknative and Slack in Notis once.
- 2Create an automation named Mempool Slack Alerts.
- 3Tell Notis to summarize each incoming Blocknative transaction and post only relevant alerts.
- 4Choose the webhook trigger and a Slack report channel.
- 5Test with one real pending transaction.
Questions about this workflow
Can this watch every transaction?
Yes, but ask Notis to report only transactions that match your supplied addresses, assets, or value thresholds.
Where does the alert appear?
Notis posts it to the Slack channel you choose.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Blocknative to Slack. A trigger fires from one place; an action lands in another.
Blocknative triggers
Slack actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Add a custom emoji to a Slack team
Deprecated: adds a custom emoji to a slack workspace given a unique name and an image url. use `add emoji` instead.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
Add a remote file
Adds a reference to an external file (e.g., google drive, dropbox) to slack for discovery and sharing, requiring a unique `external id` and an `external url` accessible by slack.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Add call participants
Registers new participants added to a slack call.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Add reaction to message
Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.
Connect any two apps with Notis in the middle.
Blocknative and Slack, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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