Pause a sandbox with a Slack wrap-up reaction
Close a work session with one clear team signal, then preserve the sandbox for the next time you need it.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Pause Sandbox
Tool to pause a running E2B sandbox preserving its filesystem and memory state. Use when you need to temporarily suspend a sandbox while maintaining its state for later resumption. Takes approximately 4 seconds per 1 GiB of RAM to pause. Paused sandboxes can be stored for up to 30 days.
Why this helps
End-of-day cleanup often slips when it requires opening another tool and remembering one more task.
- Fits environment cleanup into a familiar wrap-up gesture.
- Keeps sandbox state available for a future session.
Setup
Build it in a few focused steps.
- 1Connect Slack and E2B to Notis once through the portal.
- 2Create the automation in the portal or ask Notis to set it up conversationally.
- 3Instruct Notis to pause the sandbox identified in a Slack message when the agreed wrap-up reaction is added.
- 4Choose the Slack message reaction added trigger and a channel for run reports.
- 5Test by adding the agreed reaction to a real wrap-up message about a sandbox.
Questions about this workflow
Does this permanently remove the environment?
No. Pausing preserves sandbox state for later resumption.
Can the reaction be used for any Slack message?
Describe the specific wrap-up message and reaction that should signal a pause.
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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