Keep an E2B sandbox alive with a Slack reaction
When the team signals that work is continuing, use a familiar reaction to refresh the environment.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Refresh Sandbox
Tool to refresh an E2B sandbox and extend its time to live. Use when you need to keep a sandbox alive longer and prevent it from timing out.
Why this helps
A sandbox may time out while the team is still relying on it because nobody remembers to extend its TTL.
- Ties a refresh to a visible signal that the work is continuing.
- Helps avoid interruption while the sandbox is still needed.
Setup
Build it in a few focused steps.
- 1Connect Slack and E2B to Notis once through the portal.
- 2Create the automation through the portal or ask Notis to make it in plain language.
- 3Instruct Notis to refresh the E2B sandbox identified in a Slack message when the designated continue-work reaction is added.
- 4Choose the Slack message reaction added trigger and a channel for run reports.
- 5Test with a real message about continuing work in a sandbox.
Questions about this workflow
What does the refresh reaction do?
It prompts Notis to extend the TTL of the sandbox identified in the message.
Does it change the sandbox configuration?
No. It refreshes the sandbox to help keep it available longer.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to E2b. A trigger fires from one place; an action lands in another.
Slack triggers
E2b actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Connect to Sandbox
Tool to connect to an existing E2B sandbox and retrieve its details. Use when you need to reconnect to a sandbox from different environments or resume a paused sandbox. The TTL is extended upon connection.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Create Template
Tool to create a new E2B template with specified configuration. Use when you need to define a new sandbox template that can be used to spawn sandbox environments.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Create Webhook
Tool to register a new webhook to receive sandbox lifecycle events for the team. Use when you need to set up notifications for sandbox lifecycle events such as creation, updates, or termination.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Delete Sandbox
Tool to terminate and permanently delete a running E2B sandbox instance. Use when you need to kill a sandbox that is no longer needed. Once terminated, the sandbox cannot be resumed.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Delete Webhook
Tool to unregister a webhook and stop receiving lifecycle events. Use when you need to remove a webhook that is no longer needed or to clean up webhook registrations.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Check API Health
Tool to check the health status of the E2B API. Use when you need to verify that the API service is operational and accessible.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Get Sandbox
Tool to retrieve detailed information about a specific sandbox by its ID. Use when you need to check sandbox status, metadata, or configuration details.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Get Sandbox Logs
Tool to retrieve logs from a specific E2B sandbox instance. Use when you need to debug or monitor sandbox execution by viewing its console output and system logs.
Connect any two apps with Notis in the middle.
Slack and E2b, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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