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 integrates with the Wassenger WhatsApp API to manage chat contacts, specifically allowing you to upsert (update or insert) metadata for a contact associated with a WhatsApp number. This operation is useful when you want to enrich or maintain additional information about your WhatsApp contacts in an automated workflow.

Common scenarios include:

Adding custom tags or notes to contacts for segmentation or personalized messaging.
Updating contact attributes dynamically based on interactions or external data sources.
Synchronizing contact metadata from CRM or other systems into WhatsApp contacts.

For example, you could use this node to add a "customer_status" metadata key with values like "premium" or "trial" to tailor subsequent communications.

Properties

Name	Meaning
WhatsApp Number	The ID of the WhatsApp number (device) to which the contact belongs.
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 be added or updated for the contact.

The Metadata property supports multiple entries, each consisting of:

Key: An alphanumeric string (including underscores) that identifies the metadata field.
Value: A string value up to 300 characters representing the metadata content.

Output

The node outputs JSON objects representing the result of the upsert operation for each input item. Each output JSON typically contains the response from the Wassenger API confirming the metadata update or insertion for the specified contact.

If the operation fails and "Continue On Fail" is enabled, the output will contain an error message under the error key.

No binary data output is produced by this node.

Dependencies

Requires an active Wassenger WhatsApp API account.
Needs an API key credential configured in n8n to authenticate requests.
The node depends on the Wassenger API endpoints for managing chat contacts and their metadata.

Troubleshooting

Invalid Contact ID: If the contact ID does not exist or is malformed, the API may return an error. Verify the contact ID format (e.g., 447362053576@c.us) and ensure the contact exists.
Invalid Metadata Key/Value: Metadata keys must be alphanumeric or underscore characters only; values are limited to 300 characters. Violating these constraints can cause errors.
Authentication Errors: Ensure the API key credential is correctly set up and has sufficient permissions.
API Rate Limits: Excessive requests might lead to rate limiting; consider adding delays or batching inputs.
Network Issues: Connectivity problems can cause request failures; verify network access to the Wassenger API.

Links and References

Wassenger Official API Documentation
WhatsApp Business API Concepts
n8n Documentation on Creating Custom Nodes

WassengerInstall