brazil-cnpj

brazil-cnpj is a skill for Claude Code from Nolpak14/getregdata. It costs 215 tokens per session (2,719 once invoked), scanned A, original, MIT.

A lookup tool for Brazilian companies using public data from the Receita Federal, Brazil's tax authority. It returns registered company details, business activities, legal form, tax flags, address, partners, and administrators.

In plain words
What is it for?
It helps with company verification, know-your-business checks, due diligence, and finding Brazilian company registration or partner information.
Why use it?
It reduces the need to search several sources when checking whether a Brazilian company exists and what its registered status and ownership details are.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the regdata-company-lookup plugin — 28 skills shipped together

Good fit It helps with company verification, know-your-business checks, due diligence, and finding Brazilian company registration or partner information.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nolpak14/getregdata/brazil-cnpj
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Nolpak14/getregdata --skill brazil-cnpj
Clone the repo
git clone --depth 1 https://github.com/Nolpak14/getregdata

Made for: Claude Code.

Or install regdata-company-lookup, the plugin that ships this one along with the rest of its 28 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for brazil-cnpj

README.md
[![agentmods](https://agentmods.dev/badge/skills/nolpak14/getregdata/brazil-cnpj/github.svg)](https://agentmods.dev/skills/nolpak14/getregdata/brazil-cnpj)
Your own site
<a href="https://agentmods.dev/skills/nolpak14/getregdata/brazil-cnpj"><img src="https://agentmods.dev/badge/skills/nolpak14/getregdata/brazil-cnpj/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for brazil-cnpj

Your own site · 80×15
<a href="https://agentmods.dev/skills/nolpak14/getregdata/brazil-cnpj"><img src="https://agentmods.dev/badge/skills/nolpak14/getregdata/brazil-cnpj.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 215 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,719 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00215 $0.02719
Opus 5 $0.00108 $0.01359
Sonnet 5 $0.00043 $0.00544
Haiku 4.5 $0.00021 $0.00272

Measured 9d ago against content hash ce94ee71c279, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

brazil-cnpj scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

**curl pattern** (no auth header on any of them; example is Petrobras, CNPJ 33000167000101):
skills/brazil-cnpj/SKILL.md · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

brazil-cnpj

Free, keyless Brazilian company data from public open-data CNPJ APIs built on the Receita Federal (RF) open dataset. This skill needs no paid actor, no Apify token, and no API key at all - the primary endpoints are wide open. Use it as the front door for Brazilian entity verification, and route to the paid regdata actors when you need a jurisdiction that has no free API.

Persona

You are a KYB / due-diligence analyst verifying Brazilian companies against the official register. You resolve a company to its CNPJ, confirm its situacao cadastral is ATIVA, identify its partners and administrators (the quadro de socios), and read its registered details for signals - all from Receita Federal open data, not a commercial aggregator.

What this gives you (for free)

  • Company profile - cnpj, razao_social (legal name), nome_fantasia (trade name), situacao_cadastral + descricao_situacao_cadastral, data_inicio_atividade (start date), natureza_juridica (legal form), capital_social, porte (company size), and MEI / Simples Nacional flags.
  • Activity codes - cnae_fiscal + cnae_fiscal_descricao (primary CNAE), and cnaes_secundarios[] (secondary activities).
  • Address - logradouro, numero, bairro, municipio, uf (state), cep (postcode).
  • qsa[] (partners and administrators) - the KYB gold: the quadro de socios e administradores. Each entry carries nome_socio, qualificacao_socio (the role/qualification), faixa_etaria (age band), and data_entrada_sociedade (date joined). This is the partner / UBO-ish graph for the entity.

CNPJ data is Brazilian public open data published by Receita Federal - commercial reuse is permitted. Read-only.

Authentication

None. No API key, no registration, no auth. Three free options, all keyless:

  • BrasilAPI (primary) - keyless, no signup, hosted, tracks the RF monthly open-data releases.
  • minhareceita.org - open-source and self-hostable; serves the full RF dump with the identical RF schema. Self-host it when you need volume or the complete dataset locally.
  • ReceitaWS - keyless but the free tier is ~3 requests/min and cache-only (a CNPJ that was never cached may not return); it has a paid tier for scale.

Read the full file on GitHub · 145 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 145 lines · 215 tokens per session scan A ce94ee71c279

Subscribe to this mod's changes

brazil-cnpj is a skill published in the GitHub repository Nolpak14/getregdata (6 stars, last pushed 1mo ago), licensed MIT. It adds 215 tokens to every session and 2,719 once invoked, about $0.0011 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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