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Recheck crypto events when a Slack reaction is removed

Use a change in team sentiment as a prompt for one final calendar check.

Trigger

Message Reaction Removed

Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.

Action

List Cryptocurrency Events

Tool to retrieve list of cryptocurrency events. Use when you need to fetch upcoming or past crypto events filtered by date range, coins, categories, or other criteria. Note: Cannot retrieve events before 25/11/2017. The can_occur_before field is important as some events may happen before their stated date.

Why this helps

Removing a reaction can signal uncertainty, but the underlying event research is rarely refreshed.

  • Capture why a review status changed
  • Refresh dates before closing research
  • Keep decisions tied to current event data

Setup

Build it in a few focused steps.

  • 1Connect Slackbot and Coinmarketcal once in Notis.
  • 2Create an automation named Reaction removed event recheck.
  • 3Describe that when a reaction is removed from a project message, refresh matching CoinMarketCal events and summarize current dates plus any unresolved research questions.
  • 4Pick Message Reaction Removed as the trigger and choose a report destination.
  • 5Test it by removing a reaction from one real project message.

Questions about this workflow

Does this infer why the reaction was removed?

No. It can summarize the refreshed event data but cannot know the person's reason unless the message provides it.

Can the same channel and emoji be filtered?

Yes. The reaction removed trigger supports optional channel and emoji filters.

When this happens · Trigger

Do this · Action

Supported Triggers and Actions

Notis builds workflows that link Slackbot to Coinmarketcal. A trigger fires from one place; an action lands in another.

Slackbot triggers

Coinmarketcal actions

Recurring trigger

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

TriggerScheduled

List Coins

Tool to retrieve list of all available coins/cryptocurrencies in CoinMarketCal database. Use when you need to fetch coin information including IDs, names, symbols, and event counts.

ActionInstant

Webhook trigger

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

TriggerInstant

List Event Categories

Tool to list all event categories. Use when you need to fetch available event categories.

ActionInstant

New Channel Created Trigger

Triggered when a new channel is created in Slack.

TriggerInstant

List Cryptocurrency Events

Tool to retrieve list of cryptocurrency events. Use when you need to fetch upcoming or past crypto events filtered by date range, coins, categories, or other criteria. Note: Cannot retrieve events before 25/11/2017. The can_occur_before field is important as some events may happen before their stated date.

ActionInstant

Channel Message Received

Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.

TriggerInstant

Direct Message Received

Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.

TriggerInstant

Message Reaction Added

Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.

TriggerInstant

Message Reaction Removed

Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.

TriggerInstant

Reaction Added Trigger

DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.

TriggerInstant

Connect any two apps with Notis in the middle.

Slackbot and Coinmarketcal, or any other combination from 1,000+ integrations.

When this happens · Trigger

Do this · Action

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