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Billdu

Invoice creation, billing, and payment management for small businesses.

3 triggers7 searches11 actionsPollingAuth: API key

AI-assisted documentation8 min read

This documentation is compiled from our integration source code, internal specs for Billdu, its official API documentation and anonymized requests logs we collect from our support team[2].

Open Billdu on WEXTL →

Billdu requires an active account and an API access token from your account settings to connect — both are set up on its own site.[3]

  • API KeytextRequired

    Your API key. Found under Settings > API in your account.

    [1]
  • API SecretpasswordRequired

    Your API secret used to sign every request.

    [1]
  1. Log in to your WEXTL account, add the Billdu node module to your workflow, and click Create new credential.
  2. Optional: In the Credential name field, enter a name for the credential.
  3. Enter the authentication credentials you copied from your Billdu account, or follow the on-screen instructions to create the credential.
  4. If prompted, authenticate your account and confirm access.
  5. If you want to make changes to your credential in the future, follow the steps in Manage credentials →
Connecting Billdu to WEXTL®
Video slide demonstrates how to integrate Billdu in the WEXTL visual workflow builder.[4]

Notes

Credentials are org-scoped; share them with teammates from the Credentials picker on any of its nodes.For detailed information on connecting an application, see Connect an application →

Watch ClientsTrigger
Output fields[3]
FieldType
IDnumber
Countrytext
Degreetext
Salutationtext
Companytext
Nametext
Surnametext
Fullnametext
Streettext
Ziptext
Citytext
Createddate
Modifieddate
Phonetext
Mobiltext
Faxtext
Weburl
Notetext
Emailemail
Com IDtext
7other output fields
Watch DocumentsTrigger
Output fields[3]
FieldType
IDnumber
Custom IDtext
Currencytext
Vstext
Cstext
Sstext
Statustext
Paymenttext
Delivery typetext
Notetext
Order numbertext
Delivery notetext
Discountnumber
Sconto daysnumber
Createddate
Modifieddate
Issue datetext
Delivery datetext
Execution datetext
Maturity datenumber
17other output fields
Watch ProductsTrigger
Output fields[3]
FieldType
IDnumber
Labeltext
Descriptiontext
Stock numbertext
Pricenumber
Vatnumber
Countnumber
Unittext
Createddate
Modifieddate
linksobject
Selfobject
Get a ClientAction
Input fields[3]
FieldType
ClientRequired
choice
Output fields[3]
FieldType
IDnumber
Countrytext
Degreetext
Salutationtext
Companytext
Nametext
Surnametext
Fullnametext
Streettext
Ziptext
Citytext
Createddate
Modifieddate
Phonetext
Mobiltext
Faxtext
Weburl
Notetext
Emailemail
Com IDtext
7other output fields
Get a DocumentAction
Input fields[3]
FieldType
DocumentRequired
choice
Output fields[3]
FieldType
IDnumber
Custom IDtext
Currencytext
Vstext
Cstext
Sstext
Statustext
Paymenttext
Delivery typetext
Notetext
Order numbertext
Delivery notetext
Discountnumber
Sconto daysnumber
Createddate
Modifieddate
Issue datetext
Delivery datetext
Execution datetext
Maturity datenumber
17other output fields
Get a ProductAction
Input fields[3]
FieldType
ProductRequired
choice
Output fields[3]
FieldType
IDnumber
Labeltext
Descriptiontext
Stock numbertext
Pricenumber
Vatnumber
Countnumber
Unittext
Createddate
Modifieddate
linksobject
Selfobject
Get an ImageAction
Input fields[3]
FieldType
Image IDRequired
text
Output fields[3]
FieldType
Datatext
List ClientsSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDnumber
Countrytext
Degreetext
Salutationtext
Companytext
Nametext
Surnametext
Fullnametext
Streettext
Ziptext
Citytext
Createddate
Modifieddate
Phonetext
Mobiltext
Faxtext
Weburl
Notetext
Emailemail
Com IDtext
7other output fields
List DocumentsSearch
Input fields[3]
FieldType
Document Typechoice
Limitnumber
Output fields[3]
FieldType
IDnumber
Custom IDtext
Currencytext
Vstext
Cstext
Sstext
Statustext
Paymenttext
Delivery typetext
Notetext
Order numbertext
Delivery notetext
Discountnumber
Sconto daysnumber
Createddate
Modifieddate
Issue datetext
Delivery datetext
Execution datetext
Maturity datenumber
17other output fields
List ProductsSearch
Input fields[3]
FieldType
Limitnumber
Output fields[3]
FieldType
IDnumber
Labeltext
Descriptiontext
Stock numbertext
Pricenumber
Vatnumber
Countnumber
Unittext
Createddate
Modifieddate
linksobject
Selfobject
Add a PaymentAction
Input fields[3]
FieldType
DocumentRequired
choice
PriceRequired
number
Currencytext
Payment Datedate
Variable Symboltext
Create a ClientAction
Input fields[3]
FieldType
CompanyRequired
text
Full Nametext
Streettext
Street 2text
ZIPtext
Citytext
Province / Statetext
Countrytext
Shipping Companytext
Shipping Nametext
Shipping Surnametext
Shipping Full Nametext
Shipping Streettext
Shipping Street 2text
Shipping ZIPtext
Shipping Citytext
Shipping Provincetext
Shipping Countrytext
Phonetext
Mobiletext
7other input fields
Output fields[3]
FieldType
IDnumber
Degreetext
Salutationtext
Companytext
Nametext
Surnametext
Fullnametext
Streettext
Street 2text
Ziptext
Citytext
Provincetext
Countrytext
Shipping companytext
Shipping nametext
Shipping surnametext
Shipping fullnametext
Shipping streettext
Shipping street 2text
Shipping ziptext
20other output fields
Create a DocumentAction
Input fields[3]
FieldType
Document TypeRequired
choice
ClientRequired
choice
ItemsRequired
array
Issue Datedate
Delivery Datedate
Maturity (Days)text
Payment Methodchoice
Delivery Type (Orders)choice
Currencytext
Discountnumber
Discount Typechoice
Output fields[3]
FieldType
IDnumber
Custom IDtext
Currencytext
Vstext
Cstext
Sstext
Statustext
Paymenttext
Delivery typetext
Notetext
Order numbertext
Delivery notetext
Discountnumber
Discount typetext
Sconto daysnumber
Createddate
Modifieddate
Issue datetext
Delivery datetext
Execution datetext
18other output fields
Create a ProductAction
Input fields[3]
FieldType
LabelRequired
text
Descriptiontext
Stock Numbertext
PriceRequired
number
Tax (%)number
Countnumber
Unittext
Output fields[3]
FieldType
IDnumber
Labeltext
Stock numbertext
Pricenumber
Vatnumber
Countnumber
Unittext
Createddate
Modifieddate
linksobject
Selfobject
Delete a ClientAction
Input fields[3]
FieldType
ClientRequired
choice
Delete a DocumentAction
Input fields[3]
FieldType
DocumentRequired
choice
Delete a ProductAction
Input fields[3]
FieldType
ProductRequired
choice
Download a DocumentAction
Input fields[3]
FieldType
DocumentRequired
choice
Output fields[3]
FieldType
Datatext
Make an API Calluniversal
Input fields[3]
FieldType
URLRequired
text
MethodRequired
choice
Headersarray
Headerobject
Query Stringarray
Parameterobject
Bodytext
Output fields[3]
FieldType
Bodytext
Headersobject
Status codenumber
Send a DocumentAction
Input fields[3]
FieldType
DocumentRequired
choice
SubjectRequired
text
MessageRequired
text
RecipientsRequired
array
Recipient Emailemail
Update a DocumentAction
Input fields[3]
FieldType
DocumentRequired
choice
Paid Ondate
Payment Methodchoice
Notetext
Headertext
Currencytext
Discountnumber
Discount Typechoice
Localetext
Document Colortext

Look for Billdu templates in the WEXTL template library.

Browse templates →
  1. WEXTL® Billdu Source Code connector implementation.
  2. Our users use cases and automations.
  3. Official API Documentation for Billdu.
  4. WEXTL® visual workflow builder data.

Last updated: Jul 18, 2026 19:12