Stax Invoice API

The Invoice API from Stax — 9 operation(s) for invoice.

Operations 13

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

POST /invoice/schedule/ Schedule a recurring or one-time invoice · Create a Scheduled Invoice #
Ask an LLM
“Can I set up an invoice that bills a customer automatically every month?”
“Is it possible to schedule a one-time invoice for a future date with a recurrence rule?”
Tell an agent
Schedule a recurring {total} invoice for customer {customer_id} using rule {rule}, linking to {url}.
Create an invoice schedule for {total} that auto-charges payment method {payment_method_id}, payment page {url}.
POST /invoice Create an invoice for a customer · Create an Invoice #
Ask an LLM
“How do I bill a customer with a one-off invoice?”
“Can I let a customer pay an invoice in partial payments?”
Tell an agent
Create a {total} invoice for customer {customer_id} with payment page {url}.
Invoice customer {customer_id} for {total}, due {due_at}, payable at {url}.
GET /invoice List and search invoices · Get All Invoices #
Ask an LLM
“Which invoices have I sent to a particular customer email?”
“Can I find all invoices generated by a specific recurring schedule?”
Tell an agent
List all my invoices.
Find invoices sent to {email}.
DELETE /invoice/{id} Delete an invoice · Delete an Invoice #
Ask an LLM
“Can I delete an invoice that was created by mistake?”
“What happens to a single invoice when I remove it?”
Tell an agent destructive · confirm first
Delete invoice {id}.
Remove the invoice {id} from my account.
GET /invoice/{id} Get one invoice · Get an Invoice #
Ask an LLM
“What is the status and balance of a specific invoice?”
“Can I look up a single invoice by its ID?”
Tell an agent
Get invoice {id}.
Show me the line items and total on invoice {id}.
PUT /invoice/{id} Update an existing invoice · Update an Invoice #
Ask an LLM
“Can I change the invoice date on an invoice I already created?”
“Is it possible to edit an invoice after it has been issued?”
Tell an agent
Change the invoice date on invoice {id} to {invoice_date_at}.
Update existing invoice {id}.
DELETE /invoice/schedule/{id} Delete a recurring invoice schedule · Delete an Invoice Schedule #
Ask an LLM
“Can I stop a recurring billing schedule for good?”
“Does deleting an invoice schedule need merchant authentication?”
Tell an agent destructive · confirm first
Delete invoice schedule {id}.
Cancel the recurring invoice schedule {id} permanently.
PUT /invoice/schedule/{id} Edit an invoice schedule · Edit an Invoice Schedule #
Ask an LLM
“Can I pause a recurring invoice schedule without deleting it?”
“Is it possible to change the amount or recurrence rule on an existing invoice schedule?”
Tell an agent
Set invoice schedule {id} active to {active}.
Change invoice schedule {id} to bill {total} on rule {rule}.
POST /invoice/{id}/pay/{method} Mark an invoice paid by cash, check or gift card · Mark an Invoice Paid in Cash or Check #
Ask an LLM
“Can I record that a customer paid an invoice with cash or a check outside of Stax?”
“Is it possible to log a check number when marking an invoice paid manually?”
Tell an agent
Mark invoice {id} as paid by {method}.
Mark invoice {id} paid by {method} with check number {check_number}.
POST /invoice/{id}/pay Pay an invoice with a payment method · Pay an Invoice #
Ask an LLM
“How do I charge a customer's saved card to pay off an invoice?”
“Can I apply a partial payment to an invoice using a stored payment method?”
Tell an agent
Pay invoice {id} with payment method {payment_method_id}.
Charge {apply_balance} toward invoice {id} on payment method {payment_method_id}.
GET /invoice/schedule List scheduled invoices · Retrieve All Scheduled Invoices #
Ask an LLM
“Which recurring invoice schedules are set up on my merchant account?”
“Can I see the invoice schedules for just one customer?”
Tell an agent
List all my scheduled invoices.
Show the invoice schedules for customer {customer_id}.
PUT /invoice/{id}/send/email Email an invoice to the customer · Send an Invoice via Email #
Ask an LLM
“Can I email an invoice to a customer and copy other addresses on it?”
“Is there a way to resend an invoice to a customer's inbox?”
Tell an agent
Email invoice {id} to the customer.
Email invoice {id} and CC {ccEmails}.
PUT /invoice/{id}/send/sms Text an invoice to the customer · Send an Invoice via SMS #
Ask an LLM
“Can I send an invoice to a customer by text message?”
“Is it possible to include a custom message when texting an invoice?”
Tell an agent
Text invoice {id} to {phone}.
Send invoice {id} by SMS with the message {message}.

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OpenAPI Specification

stax-invoice-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: stax-api Invoice API
  version: '0.1'
servers:
- url: https://apiprod.fattlabs.com/
security:
- ApiKeyAuth: []
tags:


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# Full source: https://raw.githubusercontent.com/api-evangelist/stax/refs/heads/main/openapi/stax-invoice-api-openapi.yml