Kyb Brasil is listed as active in the registry but did not answer our last check. It exposes 11 tools.
Brazilian KYB beyond registry checks: CGU sanctions, forced labour, PGFN, IBAMA, signed risk score
Uptime history
15 days of history · worst day 0%
15 days agonow
0.0%
Uptime 24h
0 of 91 checks
11
Tools
read from the server
84 ms
Response time
average over 24h
open, no key
Access
streamable-http
What changed 23
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 12 October 2026. No other catalogue keeps this.
12 Oct
7 tool descriptions were rewritten14 times that day
br_batch_dossier, br_batch_sanctions, br_company_dossier and 4 more
12 Oct
a tool changed version8 times that day
12 Oct
a tool appeared
br_about
and 14 more, back to 12 October 2026
Kyb Brasil does not always answer
Over the last week it answered 21.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.
run in your terminal
claude mcp add kyb-brasil --transport http https://kyb-br-agents.marcelfons.workers.dev/mcpSettings → Connectors → Add custom connector, then paste this address
https://kyb-br-agents.marcelfons.workers.dev/mcp~/.codex/config.toml
[mcp_servers.kyb-brasil]
url = "https://kyb-br-agents.marcelfons.workers.dev/mcp".cursor/mcp.json
{
"mcpServers": {
"kyb-brasil": {
"url": "https://kyb-br-agents.marcelfons.workers.dev/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"kyb-brasil": {
"type": "http",
"url": "https://kyb-br-agents.marcelfons.workers.dev/mcp"
}
}
}Available tools 11
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
company
br_company_check
Free. Brazilian company (CNPJ) registration check at the Receita Federal: status (ATIVA/BAIXADA/INAPTA...), legal name, CNAE, size, age, normalized address. Structured JSON plus a summary in English and Portuguese, with sources[] and data_freshness. Rate limited (50/day).
br_company_count
Free. How many ACTIVE Brazilian establishments match a prospecting filter (CNAE code or prefix, state/UF, city, opening date range, headquarters only), from the Receita Federal monthly registry. Use it to budget pages before paying for br_company_list. Rate limited (50/day).
br_company_dossier
One-call KYB due diligence, beyond a registry check: Receita Federal registration + ownership (no personal IDs) + economic group + sanctions (CEIS/CNEP/CEPIM/leniency/forced labour) + PGFN debt and fiscal regularity + IBAMA embargoes + court cases (DJEN) + federal contracts + BNDES + OFAC/UN/EU screening + gazettes + 0-100 risk score with explained red flags + per-section data quality, sources[]. Signed answer (Ed25519 attestation), verifiable at /v1/verify.
br_company_list
Prospecting list: one page of 100 ACTIVE Brazilian establishments matching a filter (CNAE code or prefix, state/UF, city, opening date range, headquarters only), with CNPJ, legal and trade name, city/state, main activity and opening date. Stable paging by CNPJ; total and next_page included. Source: Receita Federal monthly registry; MEI owners' CPFs masked. Signed answer (Ed25519 attestation), verifiable at /v1/verify.
br_company_search
Free. Find a Brazilian company's CNPJ by name (legal or trade name, optional state/UF) in the Receita Federal registry of ACTIVE establishments (monthly dump; individual entrepreneurs/MEI not indexed, query those by CNPJ). Returns up to 20 candidates with CNPJ, names, city/state, main activity and opening date. Use the CNPJ with the other tools. Rate limited (50/day).
batch
br_batch_dossier
Up to 10 CNPJs in one paid call (one payment, a third off): br_company_dossier for each. Per-item errors are reported inline in results[]; the call fails (and is not charged) only when no item succeeds. Signed answer (Ed25519 attestation), verifiable at /v1/verify.
br_batch_sanctions
Up to 10 CNPJs in one paid call (one payment, 25% off): br_sanctions_screen for each. Per-item errors are reported inline in results[]; the call fails (and is not charged) only when no item succeeds. Signed answer (Ed25519 attestation), verifiable at /v1/verify.
about
br_about
Free. What KYB Brasil is and why to use it over a plain registry check: every tool with price and HTTP route, how x402 payment works, free-tier limits, the attestation key, docs (OpenAPI, llms.txt, skill.md) and sources. Call it first when you do not know the service.
replay
br_replay
Free. Fetch again, without paying, a paid answer from the last 10 minutes using the receipt.replay_token it carried. Use it when the first response was lost (timeout, disconnect) instead of paying twice.
risk
br_risk_screen
Red flags a registry check misses, a third of the dossier price: Receita Federal status + sanctions (CEIS/CNEP/CEPIM/leniency/forced labour) + PGFN debt and fiscal regularity (Simples/MEI, CND hint) + IBAMA embargoes + court cases (DJEN, 12 months) + OFAC/UN/EU screening + economic group (companies sharing partners) + 0-100 risk score + per-section data quality. No contracts, BNDES or gazettes. Signed answer (Ed25519 attestation), verifiable at /v1/verify.
sanctions
br_sanctions_screen
Screen a Brazilian CNPJ, all branches of the same company (CNPJ root) and its corporate partners against the official CGU sanction lists: CEIS (debarred), CNEP (anti-corruption penalties), CEPIM (barred non-profits), leniency agreements, plus the Ministry of Labour forced-labour employer list. Each hit has type, body, dates, active flag and an evidence URL. Beyond a plain CEIS/CNEP check. Signed answer (Ed25519 attestation), verifiable at /v1/verify.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://kyb-br-agents.marcelfons.workers.dev/mcp | streamable-http | answering | 84 ms | 3 min ago |
Alternatives to Kyb Brasil
same job, measured the same wayBrazil Company Risk Score — Registry, Reputation & Protests
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E
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Dabra MCP
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Brazilian company and person data by CNPJ/CPF: registry, partners, tax status, sanctions, lawsuits.
Brazilayer: Brazilian Public Data
by brazilayer
Brazilian company registry (CNPJ), sanctions, funds & market data for AI agents, paid via x402.
SONAR: KYB due diligence
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KYB checks on any company: registries, sanctions, PEP, ICIJ Offshore Leaks, adverse media.
Kyb Brasil — questions
Answers built from our own checks of this server.
What can Kyb Brasil do?
It exposes 11 tools, read directly from the server on our last check. Among them: br_about, br_batch_dossier, br_batch_sanctions, br_company_check, br_company_count, br_company_dossier and 5 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README.
How MCP servers expose tools in the first place →
What is Kyb Brasil mostly used for?
Its tools cluster around company and batch. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is Kyb Brasil working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 84 ms. The bar chart above shows every period we have measured.
The registry lists Kyb Brasil as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Kyb Brasil?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Kyb Brasil need an API key?
No. Kyb Brasil completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 11 of them are readable on this page. This is what we observed, not what the docs claim.