NF-e end to end
Issuance, query, cancellation, correction letter, interested party and financial reconciliation (ECONF) in the same API.
- POST /v1/invoices/product/sent
- sent-product-invoice event
- Field names in Portuguese
Docs
Tax invoices by API
NF-e, NFS-e and NFCom with asynchronous processing, batch download and webhooks for every invoice event.
Docs
NF-e 10472
Sale, R$ 1,284.90
Issuer
Razao Social Emitente Ltda
Recipient
Customer
- POST sent/v1/invoices/product/sent
- processinginvoiceId pi_1234567890
- webhooksent-product-invoice
- issueddelivered to the customer
- NFS-e
- NFS-e Nacional
- NFCom
- Received invoices
- Batch download
Clients and partners
What Openi Docs is
Openi Docs is Openi's tax invoice API. With it you issue, query and cancel NF-e, issue NFS-e (including NFS-e Nacional) and NFCom asynchronously, and follow every invoice event by webhook.
From registered company to authorized invoice.
Register the company
Register the issuer through the API. A single key serves several companies.
Set up the webhook
Subscribe to the sent-product-invoice event before issuing. Issuance is asynchronous.
Send the invoice
POST /v1/invoices/product/sent validates the data and returns the invoiceId with status processing.
Follow the result
The webhook delivers every update. Query, cancel or send a correction letter through the same API.
One POST to issue. One webhook to know.
# Abridged body. The full schema is in the documentation.
curl -X POST "https://api.twdocs.com.br/v1/invoices/product/sent" \
-H "Authorization: Bearer $DOCS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"natureza_operacao": "Venda",
"data_emissao": "2024-05-12",
"tipo_documento": 1,
"finalidade_emissao": 1,
"cnpj_emitente": "YOUR_CNPJ",
"nome_emitente": "Razao Social Emitente Ltda",
"uf_emitente": "SP"
}'CaseTax invoices
40,000 tax invoices a month run by API
WAM Group runs 40,000 tax invoices a month on Docs. Issuance is one call, processing is asynchronous and every invoice event arrives by webhook, with single or batch download of the documents.
- tax invoices per month
- 40K
Invoice sent (API)Event (webhook)
NFS-e · Company 1
R$ 1,840.00
AuthorizedAuthorized
Document available
NF-e · Company 2
R$ 12,300.00
AuthorizedAuthorized
Document available
NFS-e · Company 1
R$ 560.00
RejectedRejected
With the reason
NF-e · Company 3
R$ 4,215.90
processingProcessing
Sample data, to illustrate the flow.
The tax documents your operation issues and receives.
NFS-e and NFS-e Nacional
Single and batch issuance, with lookup of received invoices.
NFCom
Communication invoices with the same authentication and response pattern.
Downloads
Download tax documents one by one or in batch.
Separate staging
A development environment with its own URL to test before production.
- Simple API
- REST, JSON and key authentication. Ready-made examples and a Postman collection in the documentation.
- Agent-ready
- An MCP server and llms.txt on every product, so your agents can read the documentation and operate the API.
- Start free
- A free plan on all three products and monthly plans from R$ 59.90, with a usage allowance included.
Combine with the other products
“We integrated Open Finance in one sprint. The documentation answers before we need to ask.”
“The reconciliation that took the team two days now runs on its own.”
Teams from fintechs, retail and accounting already integrate with Openi.
Request accessRun Docs on your account. The reference is already open.
Read the endpoints, copy the examples above and request credentials to make the same calls with your own data.