Wassenger

Interact with Wassenger WhatsApp API

Actions148

Send messages Actions
- Send text message
- Send multimedia message
- Send scheduled message
- Send poll message
- Send votes in a poll
- Delete votes in a poll
- Send meeting event
- Send meeting confirmation
- Send location
- Send contacts
- Send reaction
- Send catalog product
- Forward message
Outbound Messages Actions
- Search Messages
- Get Message
- Update Message
- Delete Message
WhatsApp Numbers Actions
- Get Numbers
- Get Number by ID
- Create Number
- Update Number
- Delete Number
- Delete Chats
Groups Actions
- Get Groups
- Get Group
- Create Group
- Update Group
- Update Group Image
- Add Participants
- Update Participants
- Remove Participants
- Get Pending Members
- Approve Members
- Reject Members
- Get Invite Code
- Revoke Invite Code
- Join Group
- Leave Group
Channels Actions
- Get Channels
- Get Channel
- Create Channel
- Update Channel
- Update Channel Image
- Delete Channel
- Join Channel
- Search Channels
Chats Actions
- Get Chats
- Get Chat Details
- Send Typing Status
- Sync Device Chats
- Sync Chat Messages
- Update Chat Read Status
- Set Chat Status
- Get Group Participants
- Assign Chat
- Unassign Chat
- Create Chat Note
- Delete Chat Note
- Update Chat Labels
- Update Chat Attributes
- Archive Chat
- Unarchive Chat
- Delete Chat
- Bulk Update Chats
Chat Contacts Actions
- Get Contacts
- Get Contact Details
- Create Contact
- Update Contact
- Update Contact Metadata
- Upsert Contact Metadata
- Delete Contact
- Bulk Create Contacts
- Block Contacts
- Unblock Contacts
Chat Messages Actions
- Get Messages
- Get Message Details
- Get Message Delivery Info
- Edit Message
- Delete Message
Chat Files Actions
- Get Files
- Get File Details
- Download File
Team Actions
- Get Team Members
- Update Team Member
- Delete Team Members
- Get Device Team Members
- Create Team Member
- Grant Device Access
- Revoke Device Access
Labels Actions
- Get Labels
- Create Label
- Update Label
- Delete Label
Departments Actions
- Get Departments
- Create Department
- Update Department
- Delete Department
Files Actions
- Search Files
- Upload File
- Delete Files
- Get File Preview
- Download File
- Get File
- Update File
- Delete File
Quick replies Actions
- Get Quick Replies
- Create Quick Reply
- Update Quick Reply
- Delete Quick Replies
Queue Actions
- Get Queue Status
- Set Queue Status
- Route Queue
- Empty Queue
WhatsApp session Actions
- Sync session
- Start session
- Scan QR
- Reset session
- Reboot session
- Get session health
- Request Authentication Code
WhatsApp profile Actions
- Get Profile
- Update Profile
- Get Profile Image
- Update Profile Image
Business catalog Actions
- Get My Catalog
- Query Business Catalog
Campaigns Actions
- Get Campaigns
- Get Campaign
- Update Campaign Status
- Get Campaign Contacts
- Delete Campaign
Meeting Links Actions
- Get Meeting Links
- Create Meeting Link
- Delete Meeting Links
User Status Actions
- Get User Status
- Get User Status by ID
- Update User Status
- Delete User Status
Webhooks Actions
- Get Webhooks
- Create Webhook
- Get Webhook
- Update Webhook
- Delete Webhook
- Enable Webhook
- Get Webhook Logs
Other Actions
- Verify number exists
- Validate phone numbers
- Send API request

Overview

This node interacts with the Wassenger WhatsApp API to update metadata associated with a specific chat contact on a given WhatsApp number. It allows users to add or modify key-value pairs of metadata for contacts, which can be useful for organizing, tagging, or storing additional information about contacts within WhatsApp conversations.

Common scenarios:

Adding custom tags or notes to contacts for segmentation or follow-up.
Storing customer preferences or statuses as metadata.
Updating contact details dynamically based on interactions or external data sources.

Practical example:
A support team might use this node to update a contact's metadata with the current ticket status or priority level after each interaction, enabling better tracking and automation downstream.

Properties

Name	Meaning
WhatsApp Number	The ID of the WhatsApp number (device) where the contact exists. Options are loaded dynamically.
Contact ID	The unique identifier of the contact in WhatsApp (e.g., `447362053576@c.us`).
Metadata	One or more key-value pairs representing metadata to set or update for the contact. Keys must be alphanumeric or underscores; values can be up to 300 characters.

Output

The node outputs JSON data representing the result of the metadata update operation for the specified contact. This typically includes confirmation of the updated metadata or the updated contact object as returned by the Wassenger API.

No binary data output is involved.

Dependencies

Requires an API key credential for authenticating with the Wassenger WhatsApp API.
The node depends on the Wassenger service being accessible and properly configured.
The "WhatsApp Number" property relies on a dynamic options loader method to fetch available devices linked to the user's account.

Troubleshooting

Common issues:
- Invalid or missing WhatsApp Number or Contact ID will cause the operation to fail.
- Metadata keys containing invalid characters or values exceeding length limits may be rejected by the API.
- Network or authentication errors if the API key is incorrect or the Wassenger service is unreachable.
Error messages:
- Errors related to missing required parameters indicate that either the WhatsApp Number or Contact ID was not provided.
- API errors about invalid metadata format suggest checking the key/value constraints.
- Authentication failures require verifying the API key credential setup.

To resolve these, ensure all required fields are correctly filled, metadata keys/values conform to restrictions, and the API key is valid and active.

Links and References

Wassenger Official API Documentation (for detailed API capabilities and metadata usage)
n8n Documentation on Creating Custom Nodes

WassengerInstall