NF-e Key & Boleto Inspector

Inspect, validate, and generate 44-digit Brazilian NF-e/CT-e access keys and decode 47-digit FEBRABAN bank slip lines.

Code type

Access key or digitable line

Check digit statusVALID

Issuing State (UF)SP (35)

Issue Year / Month2026-10

Issuer CNPJ96.224.537/0001-04

Invoice Model55 — NF-e (Nota Fiscal Eletrônica)

Series / Invoice NumberSérie 004 • Nº 000284705

Use from the terminal (JSON)

This tool also runs outside the site: the cli.js script uses the same logic as this page and returns the result as JSON. Parameters are the same as this page's URL — copy the command below with the values on screen.

Deno

deno run -q "https://tools.thecodecodex.com/cli.js?tool=br-codes"

Node.js / Bun

curl -s https://tools.thecodecodex.com/cli.js | node --input-type=module - br-codes mode=…

Parameter	Description	Default
mode	nfe \| boleto	nfe
v	chave NF-e (44 dígitos) ou linha digitável de boleto (47/48 dígitos) para inspecionar	—
uf	UF para gerar chave NF-e de teste	SP
mod	modelo fiscal para gerar chave: 55 \| 57 \| 58 \| 65	55

Requires Deno, Node.js or Bun. With Deno the script runs with no permissions: it cannot read files or access the network. Central Bank indicators are from the day the site was published.

More in Brazil Documents