Sign in
INVOICES ON AUTOPILOT
Open source · AGPL-3.0

For digital businesses

açaínfe: automatic Brazilian service invoices (NFS-e). Sold.
Invoice sent.

Each approved payment on AbacatePay becomes an NFS-e automatically, with no end-of-month spreadsheets.

R$0.80 per issued invoice. No monthly fee. No sales, no charges.

Get started See how it works
R$0.80 per successfully issued invoiceNo fixed fee
COST CALCULATOR

A month in your business

01 — 03
0 invoices200 invoices
R$
Your estimated cost this monthR$38.40
No monthly feeR$0.80 / invoice

That is 0.41% of estimated revenue of R$9,456.00.

SIMPLE PRICING. NO SURPRISES.Drag to estimate

Pricing

Your volume changes.R$0.00 fixed + R$0.80 per invoiceYour costs follow your sales.
FROM PAYMENT TO INVOICE

You make the sale.
We complete the process.

Set it up once. Then every approved payment follows the process automatically.

01

Connect your platform

Connect AbacatePay just once.

02

Set up your services

Map each product with help from your assistant.

03

Sell. The invoice follows.

Each approved payment triggers an invoice.

AND WHEN THERE ARE NO SALES?

Your costs
pause too.

R$0.00

No sales, no invoices.
No invoices, no charges.

AVAILABLE TODAY

City by city.
Care in every invoice.

Currently available for MEI and Simples Nacional businesses in the Brazilian cities below. We are expanding municipal coverage. In other cities, sign up for the waiting list.

São PauloSP · MEI and Simples Nacional
ACTIVE
São Bernardo do CampoSP · MEI and Simples Nacional
ACTIVE
Check coverage for my business

Independent product, not affiliated with AbacatePay.

AI agents and MCP

açaínfe can be operated by AI agents via MCP (Model Context Protocol). Set up your company and connect your assistant to work with your service invoices.

Information for AI agents
AGPL-3.0 · BUILT ON OPEN SOURCE

Open source.
Ready to audit.

açaínfe is built on Node.js, NestJS, Fastify, MongoDB and the MCP SDK. Opening the code is our way of giving back to the community and letting anyone audit how certificates and invoices are handled.

View the API on GitHub Front end

Contributions are welcome, including support for your own municipality.

WHAT IS IN THE REPOSITORY
  • National NFS-e issuer
  • Ginfes · São Bernardo do Campo
  • NFS-e Paulistana (São Paulo)
  • ICP-Brasil A1 certificate validation and XML signing
  • Full MCP server for AI agents
  • End-to-end tests
Rather not run anything?

The hosted service is the simplest path: no server setup, your certificate stored securely, and support when you need it.

Get started
BEFORE YOU START

No fine print.
Just answers.

The essentials, explained clearly.

Do I need a digital certificate?

Yes, an A1 certificate (.pfx), the same one used with Brazil’s e-CAC. It is encrypted and used only to sign your invoices.

Is my city supported?

Yes, for MEI and Simples Nacional businesses in São Paulo (city)/SP and São Bernardo do Campo/SP. In other cities, sign up for the waiting list: we will notify you by email and WhatsApp when your city is supported.

Do I need to understand taxes?

No. The assistant explains each choice in plain Portuguese, and you confirm it. If in doubt, check with your accountant: everything is recorded.

What if the municipal system goes offline?

Your invoice is queued and issued automatically when the system is back.

Can I cancel an invoice?

Yes, through your assistant. AbacatePay refunds automatically cancel the invoice.

What if I have no sales this month?

You pay nothing. There is no monthly fee, setup fee or plan: you only pay for successfully issued invoices.

How am I charged?

R$0.80 per successfully issued invoice. Invoices rejected by the municipality are not charged.

Are you part of AbacatePay?

No. açaínfe is an independent product for businesses selling through AbacatePay.

PAY FOR WHAT HAPPENS

Your next payment
could already become an invoice.

Set it up once. Then let each approved sale do the rest.

Get started No monthly fee. No setup fee.