Plan around upcoming base fees privately
Use a private conversation to check how base fees may move over the next blocks before choosing a transaction window.
Trigger
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Action
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.
Why this helps
Planning from a single quote can create uncertainty and prompt repeated checking while priorities are waiting.
- Review predictions across the next five blocks.
- Use confidence estimates in a timing conversation.
- Keep a focused planning question out of a busy channel.
Setup
Build it in a few focused steps.
- 1Connect Slack and Blocknative to Notis once in the portal.
- 2Create the automation in Automations or ask Notis conversationally.
- 3Give one plain-language instruction to fetch next-five-block base fee estimates when a DM asks about transaction timing.
- 4Choose the Slack direct message trigger and a channel for run reports.
- 5Test with a real private timing question.
Questions about this workflow
Are these guaranteed fees?
No. They are real-time predictions and should be treated as estimates.
Why use the DM trigger?
It is useful when an individual wants a focused fee check in a private conversation.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Blocknative. A trigger fires from one place; an action lands in another.
Slack 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.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
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.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
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.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Get Supported Chains
Tool to retrieve supported chains metadata. use when discovering available networks for blocknative gas services.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
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.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
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.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
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.
Slack and Blocknative, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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