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WhatsScale MCP server

Send WhatsApp messages, manage contacts, and automate conversations via WAHA

WhatsScale is not a separate install. One Activepieces MCP server exposes it alongside 760+ other apps, behind a single URL.

Start building See the WhatsScale integration
Tools
41
Works with
Any MCP client
Auth
API key
License
MIT, open source
Updated
September 2026

About the WhatsScale MCP server

Connect WhatsScale once in Activepieces and every action it ships becomes a tool your assistant can call, behind the same server URL as the rest of your apps. Your agent reaches WhatsScale and 760+ other apps over a single connection, on our cloud or a self-hosted install.

Tools

WhatsScale tools your AI can run

Once connected, your assistant can call any of these WhatsScale actions by asking in plain language.

  • Send a Message to a Contact

    Send a text message to a WhatsApp contact selected from your contact list

    3 fields

  • Send a Message to a Group

    Send a text message to a WhatsApp group selected from your group list

    3 fields

  • Send a Text to a Channel

    Send a text message to a WhatsApp Channel

    3 fields

  • Send a Message to a CRM Contact

    Send a text message to a contact from your WhatsScale CRM

    3 fields

  • Send an Image to a Contact

    Send an image to a WhatsApp contact selected from the dropdown.

    4 fields

  • Send an Image to a Group

    Send an image to a WhatsApp group selected from the dropdown.

    4 fields

  • Send an Image to a Channel

    Broadcast an image to a WhatsApp Channel selected from the dropdown.

    4 fields

  • Send an Image to a CRM Contact

    Send an image to a WhatsScale CRM contact selected from the dropdown.

    4 fields

  • Send a Video to a Contact

    Send a video to a WhatsApp contact selected from the dropdown.

    4 fields

  • Send a Video to a Group

    Send a video to a WhatsApp group selected from the dropdown.

    4 fields

  • Send a Video to a Channel

    Broadcast a video to a WhatsApp Channel selected from the dropdown.

    4 fields

  • Send a Video to a CRM Contact

    Send a video to a WhatsScale CRM contact selected from the dropdown.

    4 fields

  • Send a Document to a Contact

    Send a document to a WhatsApp contact selected from the dropdown.

    5 fields

  • Send a Document to a Group

    Send a document to a WhatsApp group selected from the dropdown.

    5 fields

  • Send a Document to a CRM Contact

    Send a document to a WhatsScale CRM contact selected from the dropdown.

    5 fields

  • Get a CRM Contact

    Retrieve a CRM contact by ID

    1 field

  • Update a CRM Contact

    Update the name or tags of an existing CRM contact

    3 fields

  • Delete a CRM Contact

    Permanently delete a contact from your WhatsScale CRM

    1 field

  • Add Tags to a CRM Contact

    Add one or more tags to an existing CRM contact

    2 fields

  • Remove a Tag from a CRM Contact

    Remove a single tag from a CRM contact

    2 fields

  • Create a CRM Contact

    Add a new contact to your WhatsScale CRM

    3 fields

  • Find a CRM Contact by Phone

    Look up a CRM contact using their phone number

    1 field

  • List CRM Contacts

    Retrieve a paginated list of CRM contacts with optional filters

    4 fields

  • List CRM Tags

    List every unique tag currently used across CRM contacts.

  • Send an Audio Message (By ID)

    Send an audio file to a contact, group, channel, or CRM contact by ID rather than picking from a list.

    7 fields

  • Send a Location (By ID)

    Send GPS coordinates to a contact, group, channel, or CRM contact by ID rather than picking from a list.

    6 fields

  • Send a Poll (By ID)

    Send an interactive poll to a contact, group, channel, or CRM contact by ID rather than picking from a list.

    6 fields

  • Add Participants to a Group

    Add contacts to a WhatsApp group, both selected from dropdowns.

    3 fields

  • Remove Participants from a Group

    Remove members from a WhatsApp group, both selected from dropdowns.

    3 fields

  • Promote Group Admins

    Grant admin rights to members of a WhatsApp group, both selected from dropdowns.

    3 fields

  • Demote Group Admins

    Revoke admin rights from members of a WhatsApp group, both selected from dropdowns.

    3 fields

  • Leave a Group

    Make the connected session leave a WhatsApp group selected from the dropdown.

    2 fields

  • List Group Participants

    List the members of a WhatsApp group selected from the dropdown, and their roles.

    4 fields

  • Post a Text Status

    Post a text-only WhatsApp Status (story) with an optional background color.

    3 fields

  • Post an Image Status

    Post an image WhatsApp Status (story) with an optional caption.

    3 fields

  • Post a Video Status

    Post a video WhatsApp Status (story) with an optional caption.

    3 fields

  • Check WhatsApp Number

    Check if a phone number has WhatsApp

    2 fields

  • List WhatsApp Sessions

    List every WhatsApp session (device) connected to this account, and its status.

  • List WhatsApp Contacts

    List the raw WhatsApp contacts synced to a session. Not the same as the WhatsScale CRM contacts.

    2 fields

  • List WhatsApp Groups

    List the WhatsApp groups a session belongs to.

    1 field

  • Custom API Call

    Make a custom API call to a specific endpoint

    10 fields

Triggers

WhatsScale events your agent can watch

These start a run the moment something happens in WhatsScale, so work gets picked up on its own.

  • Watch Channel Messages

    Triggers when a new message is posted to any WhatsApp Channel (includes own posts).

    1 field

  • Watch Group Messages

    Triggers when a new message is received in any WhatsApp group.

    1 field

  • Watch Incoming Messages

    Triggers when a new 1-on-1 WhatsApp message is received.

    1 field

  • Watch Specific Group Messages

    Triggers when a new message is received in a specific WhatsApp group.

    2 fields

  • Watch Specific Channel Messages

    Triggers when a new message is posted to a specific WhatsApp Channel.

    2 fields

Give your assistant WhatsScale

Connect WhatsScale once and every tool above is callable from Claude, Cursor or any MCP client, behind the same server URL as 760+ other apps. Free to start.

Get your server URLTalk to sales

WhatsScale MCP, answered.

No. That is the point of it. One Activepieces server exposes WhatsScale alongside every other piece you connect, so your client keeps a single connection.

Yes. Activepieces is open source and free to start, and the MCP server is included on every plan, from the free cloud tier to any self-hosted deployment.

Connect WhatsScale in Activepieces, enable the server under Settings → MCP Server, then paste your server URL into your client config. It authenticates over OAuth on first use.

It can call 41 tools, including Send a Message to a Contact, Send a Message to a Group, Send a Text to a Channel, and chain them with steps in other apps inside the same run.

Connections use OAuth2 with limited scopes and are stored under 256-bit encryption, with no API to read them back, so an agent gets scoped access rather than your keys.

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