Watch pending EVM transactions from Slack
When a transaction needs attention before it is confirmed, ask in Slack for a mempool watch and let Notis subscribe to pending EVM activity.
Trigger
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Action
Mempool Subscription
Tool to subscribe to real-time mempool updates for evm chains (ethereum, bnb, etc.). use after constructing your graphql subscription to stream pending transactions live.
Why this helps
Pending transactions can be easy to miss while switching between a team discussion and a live monitoring view.
- Start a pending transaction watch from the relevant team conversation.
- Focus monitoring on EVM mempool activity before confirmation.
- Reduce the manual step of initiating a separate subscription.
Setup
Build it in a few focused steps.
- 1Connect Slack and Bitquery to Notis once in the portal.
- 2Create an automation in the portal or ask Notis to start a Bitquery mempool watch when requested in Slack.
- 3Use one prompt: When a Slack channel message asks to monitor pending transactions and names an EVM network and any relevant transaction criteria, subscribe to Bitquery's mempool updates and summarize the requested monitoring scope.
- 4Select Channel Message Received as the trigger and choose a channel for run reports.
- 5Test with a real request for a supported EVM network and clear criteria.
Questions about this workflow
What does the mempool subscription monitor?
It subscribes to realtime mempool updates for EVM chains such as Ethereum and BNB.
Does it show confirmed historical transactions?
This action is for pending mempool updates. Use a database query for confirmed blockchain records.
What should I include in the Slack request?
Name the EVM network and the transaction or activity criteria you want to monitor.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Bitquery. A trigger fires from one place; an action lands in another.
Slack triggers
Bitquery actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Aliases Metric
Tool to use graphql aliases to rename fields in the response for clarity and disambiguation. use when you need to query multiple metrics with identical field names in one call.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Archive Database Query
Tool to query the archive database. use when you need full historical blockchain data (delayed by tens of minutes to hours).
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Combined Database Query
Tool to query the combined database, which merges archive and real-time databases. use when you need both historical and up-to-the-second blockchain data in one request.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Conditional Metrics Snippet
Tool to generate a graphql metric snippet with conditional logic. use when you need to apply filters directly on metric calculations via the `if` attribute.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Count Distinct Metric
Tool to use the count distinct metric to aggregate unique values for a field. use when you need to count the number of unique occurrences in a dataset.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Count Metric
Tool to use the count metric to aggregate the number of records matching a graphql query. use when you need simple record counts.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Database Selection
Tool to select the database (archive, realtime, combined) to query at the top level of a graphql request. use after determining whether you need live, historical, or combined blockchain data.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Early Access Program Query
Tool to access streaming data across various blockchain networks for evaluation purposes. use when querying chains not available via the v2 endpoint; limited to real-time data only.
Connect any two apps with Notis in the middle.
Slack and Bitquery, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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