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Billwerk+ integration

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Overview

Company website:

https://www.billwerk.com

Integration launch date:

October 15, 2026

API Categories:

Payments Accounting Passthrough

API Authorization:

Private API key

ACCOUNTING CONTACT

End-API object:

customer

Unified API Methods:

List Get Create Update Remove

List options:

limit offset query

Readable fields:

billing_address company_name created_at emails first_name id is_active is_customer last_name name shipping_address tax_number telephones

Writable fields:

billing_address company_name emails first_name last_name shipping_address tax_number telephones

ACCOUNTING CREDITMEMO

End-API object:

credit_note

Unified API Methods:

List options:

contact_id limit offset

Readable fields:

contact_id created_at creditmemo_number currency id invoice_id lineitems tax_amount total_amount

Writable fields:

ACCOUNTING INVOICE

End-API object:

invoice

Unified API Methods:

List options:

contact_id limit offset

Readable fields:

cancelled_at contact_id created_at currency discount_amount due_at id invoice_number lineitems paid_amount paid_at refund_amount status sub_total_amount tax_amount total_amount type

Writable fields:

PAYMENT PAYMENT

End-API object:

transaction

Unified API Methods:

List options:

invoice_id limit offset

Readable fields:

allocations card_brand card_last4 contact_id created_at currency id invoice_id paid_at payment_method status tender_type total_amount

Writable fields:

PAYMENT PAYOUT

End-API object:

payout

Unified API Methods:

List options:

Readable fields:

arrival_at created_at currency id notes status total_amount

Writable fields:

PAYMENT SUBSCRIPTION

End-API object:

subscription

Unified API Methods:

List options:

contact_id limit offset

Readable fields:

canceled_at contact_id created_at currency current_period_end_at current_period_start_at end_at id start_at status total_amount

Writable fields:

PASSTHROUGH

Unified API Methods:

POST GET PUT DELETE

List options:

Readable fields:

Writable fields:

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