Integration · Accounting
Connect Claude & ChatGPT to Space Invoices / Apollo
Ask your AI to draft an invoice, check whether it has been paid, or send a customer a payment reminder in Space Invoices. It can create invoices, estimates and credit notes, record payments you have received, and download or email documents as PDF. Customers, items and tax rates are looked up for you, so you only describe what to bill.
Free plan, no credit card. Takes about a minute.
Try asking
“Create an invoice for Acme Ltd: 8 hours of design at 90 EUR, due in 30 days.”
The AI finds the customer and tax rate, then creates the invoice with the line item and due date. It can keep it as a draft.
“Is invoice 2026-041 paid?”
It gets the invoice with line items, totals, payments and status.
“Record a 1,200 EUR bank transfer against invoice 2026-041.”
It records the payment with amount, type and date. No money is moved, it only updates the invoice.
What your AI can do
Invoices and estimates
Create, update and search invoices and estimates, create credit notes, void an invoice and download any document as PDF.
Payments and reminders
Record and search payments, delete one entered by mistake, email documents and send payment reminders.
Customers and items
Search, create and update customers and items, list tax rates, search expenses and switch between businesses.
“Make an estimate for the website project and email it to the client.”
It creates the estimate and emails it with the PDF attached. This sends a real email.
“Send Bistro Mare a reminder about their open invoices.”
It emails a payment reminder to the customer with your subject and message.
“Credit 2 of the 10 licenses on the last invoice to Lumen.”
It creates a credit note for the customer with the line items to reverse.
30 tools for Space Invoices / Apollo
These tools are switched on when you connect. You can switch any of them off, or require your approval before it runs.
create_credit_noteChanges dataCreate a credit note with line items and a customer, for example to reverse part of an invoice.create_customerChanges dataCreate a customer with name and optional email, address, country, tax number and company number.create_estimateChanges dataCreate an estimate (quote) with line items, a customer_id or customer details, dates and notes.create_invoiceChanges dataCreate an invoice with line items (name, quantity, price, taxes), a customer_id or customer details, dates, due date and notes. Set is_draft to keep it as a draft.create_itemChanges dataCreate an item (product or service) with name and optional price, unit, SKU, description and taxes.delete_paymentDeletesDelete a recorded payment by payment_id, for example one entered by mistake.download_document_pdfDownload the PDF of an invoice, estimate or credit note by document_id.email_documentVisible to othersEmail an invoice, estimate or credit note by document_id to the address in to, with optional subject, message and PDF attached. Sends a real email.get_credit_noteGet one credit note by credit_note_id, with line items and totals.get_current_userGet the signed-in Space Invoices user and account.get_customerGet one customer by customer_id, including address and tax details.get_estimateGet one estimate by its ID, with line items and totals.get_invoiceGet one invoice by invoice_id, with line items, totals, payments and status.get_paymentGet one recorded payment by payment_id.list_entitiesList the businesses (entities) on your account with their IDs. Use it when you manage more than one business.list_taxesList the tax rates set up for your business, with their IDs for use on line items.record_paymentChanges dataRecord a payment received against an invoice (invoice_id) with amount, type (e.g. bank_transfer, cash, card) and date. This only records it; no money is moved.search_credit_notesSearch credit notes by number, customer or text, with paging.search_customersSearch customers by name, email or tax number (search), with paging. Use it to find a customer ID.search_estimatesSearch estimates (quotes) by number, customer or text, with paging.search_expensesSearch expenses (purchase bills), with paging.search_invoicesSearch invoices by number, customer or text (search), with paging and sorting.search_itemsSearch your items (products and services) by name or SKU, with paging.search_paymentsSearch recorded payments, with paging.send_payment_reminderVisible to othersEmail a payment reminder about open invoices to a customer by customer_id, with optional subject, message and recipient email. Sends a real email.update_customerChanges dataUpdate a customer's name, email, address, tax or company number by customer_id. Only the fields you pass change.update_estimateChanges dataUpdate an estimate by its ID: items, customer, dates, notes or validity date.update_invoiceChanges dataUpdate an invoice by invoice_id: items, customer, dates, notes or reference.update_itemChanges dataUpdate an item's name, price, unit, SKU, description or taxes by its ID.void_invoiceDeletesVoid an issued invoice by invoice_id with an optional reason. This cannot be undone.
Set up in three steps
- 1
Pick the app
Create a free PipMCP account and choose Space Invoices / Apollo from the app list.
- 2
Paste your key
Paste a Space Invoices API key. Open app.spaceinvoices.com > Settings > API keys and create a key. An entity key (ek_...) is limited to one business, while an account key (sk_...) controls several entities. Use a live key, not a sandbox key, for real data.
- 3
Add the link to your AI
You get a personal MCP link. Add it to Claude, ChatGPT or Cursor:
- Click your name, then Settings › Connectors › Add custom connector.
- Paste your link as the Remote MCP server URL.
- Switch it on from the + menu in a chat.
Questions
What can the AI do in Space Invoices?
The AI can search and read invoices, estimates, credit notes, payments, customers, items, expenses and tax rates, and download documents as PDF. It can create and update invoices, estimates, customers and items, create credit notes, record and delete payments, void invoices, email documents and send payment reminders.
Does the AI see my Space Invoices credentials?
No. Your Space Invoices API key is encrypted at rest and never shown to the AI. After you save it, it is not shown again, not even to you. The AI only sees the results of the tools it calls.
Can I control what the AI is allowed to do?
Yes. You choose which tools are switched on, so you can start read-only. Voiding an invoice cannot be undone, deleting a payment removes it from your records, and emailing documents or reminders reaches your customers, so these can require your approval before they run. Every tool call is logged.
Does it work with ChatGPT?
Yes. In ChatGPT go to Settings › Apps & Connectors › Advanced and turn on Developer mode, then add your PipMCP link. Developer mode needs a paid ChatGPT plan: Plus, Pro, Business or Enterprise. The same link also works in Claude (Settings › Connectors › Add custom connector), Cursor and other MCP clients.
What does it cost?
PipMCP has a free plan with no credit card required. Paid plans bill per completed task. You also need your own Space Invoices account.
Should I use an entity key or an account key?
An entity key (ek_...) is limited to one business, which is the simplest choice if you only have one. An account key (sk_...) controls several entities, and the AI can list them to pick the right business. Use a live key for real data, not a sandbox key.
Let your AI work in Space Invoices / Apollo today.
Start free. Your key stays encrypted, and you decide what the AI may do.
Connect Space Invoices / Apollo freePipMCP is not affiliated with Space Invoices / Apollo. Product names are trademarks of their owners.






