Review vendor numbers from Slack
Turn vendor contact details shared in a channel into a Callerapi lookup your team can review.
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
Get Phone Number Information
Tool to retrieve detailed information about a specific phone number, including reputation, business and carrier details, and ftc complaints. use when the number is in e.164 format and set hlr=true to include hlr data (adds 1-3 seconds to response).
Why this helps
Vendor details often arrive in busy threads, where deciding whether to follow up can get pushed behind other work.
- Retrieve number details while the vendor conversation is still active.
- Keep the lookup associated with the channel message.
- Make contact review a small follow-up instead of a separate research session.
Setup
Build it in a few focused steps.
- 1Connect Slack and Callerapi to Notis once in the portal.
- 2Create a new automation and write one prompt describing how to recognize vendor numbers for lookup.
- 3Pick Slack Channel Message Received as the trigger.
- 4Set a channel for run reports and test with a vendor number in E.164 format.
Questions about this workflow
Does Callerapi confirm that a vendor is trustworthy?
The action retrieves phone-number information, including reputation and carrier details. It does not provide a definitive trust decision.
Can it look up any format?
The action says the number should be in E.164 format.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Callerapi. A trigger fires from one place; an action lands in another.
Slack triggers
Callerapi actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Get Phone Number Information
Tool to retrieve detailed information about a specific phone number, including reputation, business and carrier details, and ftc complaints. use when the number is in e.164 format and set hlr=true to include hlr data (adds 1-3 seconds to response).
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Get User Information
Tool to retrieve information about the authenticated user, including email and credit usage details. use after authentication to fetch credits spent, monthly allocation, and credits left.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Connect any two apps with Notis in the middle.
Slack and Callerapi, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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