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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "kyb-brasil": {
      "type": "http",
      "url": "https://kyb-br-agents.marcelfons.workers.dev/mcp"
    }
  }
}

claude mcp add --transport http kyb-brasil https://kyb-br-agents.marcelfons.workers.dev/mcp

[mcp_servers.kyb-brasil]
url = "https://kyb-br-agents.marcelfons.workers.dev/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "kyb-brasil": {
      "type": "remote",
      "url": "https://kyb-br-agents.marcelfons.workers.dev/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "kyb-brasil": {
      "type": "http",
      "url": "https://kyb-br-agents.marcelfons.workers.dev/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=kyb-brasil&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8va3liLWJyLWFnZW50cy5tYXJjZWxmb25zLndvcmtlcnMuZGV2L21jcCJ9"
}

{
  "servers": {
    "kyb-brasil": {
      "type": "http",
      "url": "https://kyb-br-agents.marcelfons.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "kyb-brasil": {
      "httpUrl": "https://kyb-br-agents.marcelfons.workers.dev/mcp"
    }
  }
}

extensions:
  "kyb-brasil":
    enabled: true
    name: "kyb-brasil"
    type: streamable_http
    uri: "https://kyb-br-agents.marcelfons.workers.dev/mcp"
    timeout: 300

Quality 80 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene86 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations11 of 11 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: br_about (destructiveHint, openWorldHint); br_company_check (destructiveHint, idempotentHint); br_company_search (destructiveHint, idempotentHint); …
pass
tools.token_costabout 2,093 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability75 · weight 15

warn
stability.changes22 tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

11 tools, about 2,093 tokens to load them all · tool set 401b8c53fd74 · tools last changed 2026-10-12 · checked 2026-10-20 04:41 UTC

Tool changes

2026-10-12br_company_listchangeddescription
before
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.
after · 86% of words in common
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.
2026-10-12br_batch_dossierchangeddescription
before
Up to 10 CNPJs in one paid call (one payment, 20% 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.
after · 74% of words in common
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.
2026-10-12br_batch_sanctionschangeddescription
before
Up to 10 CNPJs in one paid call (one payment, no per-item gas): 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.
after · 74% of words in common
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.
2026-10-12br_company_dossierchangeddescription
before
One-call KYB due diligence on a Brazilian company: Receita Federal registration + ownership (no personal IDs) + economic group + sanctions (CEIS/CNEP/CEPIM/leniency/forced labour) + PGFN debt and fiscal regularity + IBAMA embargoes + federal contracts + BNDES + OFAC/UN/EU screening + gazette mentions + 0-100 risk score with explained red flags + per-section data quality. Summary in English and Portuguese, sources[].
after · 67% of words in common
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.
2026-10-12br_risk_screenchangeddescription
before
Red flags only, a third of the dossier price: Receita Federal status + sanctions (CEIS/CNEP/CEPIM/leniency/forced labour) + PGFN federal debt and fiscal regularity (Simples/MEI, CND hint) + IBAMA embargoes + OFAC/UN/EU name screening + economic group (other companies sharing partners, with their flags) + deterministic 0-100 risk score + per-section data quality. No contracts, BNDES or gazettes. Summary in English and Portuguese.
after · 66% of words in common
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.
2026-10-12br_sanctions_screenchangeddescription
before
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.
after · 82% of words in common
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.
2026-10-12br_aboutadded
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.
2026-10-12br_company_searchchangeddescription
before
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). 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).
after · 87% of words in common
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).
2026-10-12br_company_listchangedoutput schema
2026-10-12br_company_dossierchangedoutput schema

Showing the latest 10. Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 79 / 100

no-repository

provenance45

liveness99

freshness100

hygiene80

+website +reachable +uptime-97% +updated-7d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://kyb-br-agents.marcelfons.workers.dev/mcp` streamable-http	none	yes	97%	774 ms	2025-11-25	2026-10-20

Tools (11)

`br_about`read-only	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.
`br_batch_dossier`read-only	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`read-only	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.
`br_company_check`read-only	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`read-only	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`read-only	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`read-only	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`read-only	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).
`br_replay`read-only	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.
`br_risk_screen`read-only	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.
`br_sanctions_screen`read-only	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.

Schemas: list_tools.

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More from io.github.celfons

Official server.json

{
  "name": "io.github.celfons/kyb-brasil",
  "icons": [
    {
      "src": "https://kyb-br-agents.marcelfons.workers.dev/icon.svg",
      "sizes": [
        "any"
      ],
      "mimeType": "image/svg+xml"
    }
  ],
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://kyb-br-agents.marcelfons.workers.dev/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.4.2",
  "websiteUrl": "https://kyb-br-agents.marcelfons.workers.dev",
  "description": "Brazilian KYB beyond registry checks: CGU sanctions, forced labour, PGFN, IBAMA, signed risk score"
}