Dados B3

REMOTE · DADOSB3.COM · SCANNED AUG 20

Brazilian stock (B3) fundamentals: ratios, multiples, dividends, scores. Public methodology.

Available components

+3 this week 63 63 Trust /100

Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score →

Endpoint Security57

The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
Authorisation not fully verified: no authorisation is required to call this server, and 14 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail

Transport & Reachability100

Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass

Schema Quality & AI Usability72

AI-judged instruction clarity (good).Pass
Tool/resource definitions use about 1249 tokens (~89/item across 14 items; 14 tools + 0 resources), lean.Pass
Usage-examples check failed: none of the tools include examples. See how to fix → Fail

Stability & Change Management30

Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial

Tool Coverage67

100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
0% of tool parameters carry a description.Fail

Capabilities100

Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass

Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

remote · dadosb3.com

Claude Codex opencode OpenClaw Hermes Other

# add to Claude Code

claude mcp add --transport http val7h-dados-b3 https://dadosb3.com/mcp/

# ~/.codex/config.toml

[mcp_servers.val7h-dados-b3]
url = "https://dadosb3.com/mcp/"

// opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "val7h-dados-b3": {
      "type": "remote",
      "url": "https://dadosb3.com/mcp/",
      "enabled": true
    }
  }
}

# add to OpenClaw

openclaw mcp add val7h-dados-b3 --url https://dadosb3.com/mcp/ --transport streamable-http

# ~/.hermes/config.yaml

mcp_servers:
  val7h-dados-b3:
    url: "https://dadosb3.com/mcp/"

// mcp.json

{
  "mcpServers": {
    "val7h-dados-b3": {
      "type": "http",
      "url": "https://dadosb3.com/mcp/"
    }
  }
}

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

19 Aug 26 +1

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
17 Aug 26 +1

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
15 Aug 26 +1

No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
13 Aug 26 0
- Schema quality: 78 → 89 ▼ functional
- New tool “screener_fiis” functional
- New tool “fii” functional
- New tool “fiis_ranking” functional
12 Aug 26 +1
- Stability: unverified → 0.03 ▲ functional
11 Aug 26 59

First indexed and scored.

Show 5 earlier entries Hide earlier entries

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 20 Aug 2026 · Probed https://dadosb3.com/mcp/

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject	Issuer	Valid from	Valid until	Key	Signature	Serial
CN=dadosb3.com	CN=WE1,O=Google Trust Services,C=US	11 Aug 2026	9 Nov 2026	ECDSA 256	ECDSA-SHA256	ed6f468396701e730e3b6d278d0001e9
SANs: dadosb3.com
CN=WE1,O=Google Trust Services,C=US (CA)	CN=GTS Root R4,O=Google Trust Services LLC,C=US	13 Dec 2023	20 Feb 2029	ECDSA 256	ECDSA-SHA384	7ff31977972c224a76155d13b6d685e3
CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA)	CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE	15 Nov 2023	28 Jan 2028	ECDSA 384	SHA256-RSA	7fe530bf331343bedd821610493d8a1b

DNSSEC insecure

Validation of dadosb3.com. — Not signed

Zone	DS	Keys	Algorithms	Outcome
.	trust_anchor	20326, 38696	8, 8	Verified
com.	present	19718	13	Verified
dadosb3.com.	absent			Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation

Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result	No authorisation required
HTTP status	200

Transports 2 probes

Transport	URL	Outcome	Status	Location
streamable-http	https://dadosb3.com/mcp/	Verified	200
http (plaintext)	http://dadosb3.com/mcp/	HTTPS enforced	301	https://dadosb3.com/mcp/

MCP tools · 14 exposed · ~1,249 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens

dicionario ~61

Metodologia dos indicadores em JSON: fórmula, contas CVM e a BASE do lucro de cada um. IMPORTANTE para comparar corretamente: margem_liquida usa lucro consolidado TOTAL; roe usa lucro dos CONTROLADORES. Gratuito.

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

dividendos ~94

Histórico de proventos em dinheiro (dividendos e JCP) de uma empresa da B3: valor por ação, data de aprovação, data-com e preço na data-com, mais resumo anual e dividend yield 12 meses. WEGE3 é gratuita; demais tickers exigem chave_api (grátis ou Pro).

Input Output Examples

Name	Type	Req	Description
chave_api	string	–	–
ticker	string	yes	–

No output schema declared.

No examples provided.

fatos_contabeis ~92

Contas padronizadas (receita, EBIT, lucro, PL, dívida, caixa...) com a conta CVM de origem de cada número — auditável de ponta a ponta. Anual ou trimestral (Q1-Q3 isolado). WEGE3 gratuita.

Input Output Examples

Name	Type	Req	Description
chave_api	string	–	–
ticker	string	yes	–
trimestral	boolean	–	–

No output schema declared.

No examples provided.

fii ~101

Detalhe de um fundo imobiliário (FII): cadastro, último informe (cotistas/PL/competência), a série histórica de P/VP ponto-no-tempo, o DY 12m corrente e os últimos rendimentos pagos. MXRF11 é o FII aberto para degustação; demais fundos exigem chave_api (grátis ou Pro).

Input Output Examples

Name	Type	Req	Description
chave_api	string	–	–
ticker	string	yes	–

No output schema declared.

No examples provided.

fiis_ranking ~119

Ranking dos fundos imobiliários (FIIs): os mais descontados (menor P/VP), os maiores pagadores (DY 12m) e a mediana de P/VP e DY por segmento. Tudo do informe mensal da CVM + COTAHIST, só valores limpos (sem flag) e fundos líquidos. Requer chave_api (grátis ou Pro); o FII MXRF11 é aberto para degustação nas ferramentas por ticker.

Input Output Examples

Name	Type	Req	Description
chave_api	string	–	–

No output schema declared.

No examples provided.

indicadores_anuais ~88

Série anual (2010–hoje) de ROIC, ROE, margens, crescimento e dívida líquida/EBITDA de uma empresa da B3, com flags de qualidade. WEGE3 é gratuita; demais tickers exigem chave_api (grátis ou Pro).

Input Output Examples

Name	Type	Req	Description
chave_api	string	–	–
ticker	string	yes	–

No output schema declared.

No examples provided.

listar_empresas ~36

Lista as 402 companhias abertas brasileiras disponíveis (nome, CNPJ e ticker quando resolvido). Gratuito, sem chave.

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

metodologia ~46

Metodologia pública dos indicadores. Sem argumento, lista as páginas; com nome (ex.: 'roic'), devolve o texto completo. Gratuito.

Input Output Examples

Name	Type	Req	Description
nome	string	–	–

No output schema declared.

No examples provided.

multiplos ~86

Múltiplos ponto-no-tempo (P/L, P/VP, EV/EBITDA anuais; P/L TTM trimestral) — preço do 1º pregão APÓS a publicação real do balanço, sem vazamento de informação futura. WEGE3 gratuita.

Input Output Examples

Name	Type	Req	Description
chave_api	string	–	–
ticker	string	yes	–

No output schema declared.

No examples provided.

reapresentacoes ~97

Balanços REPUBLICADOS de uma empresa: quando um número do exercício muda entre o arquivo original e a republicação, as duas versões ficam lado a lado (ano, conta CVM, valor antigo × novo, variação). Diferencial do Dados B3 — reapresentação registrada, nunca corrigida em silêncio. WEGE3 gratuita.

Input Output Examples

Name	Type	Req	Description
chave_api	string	–	–
ticker	string	yes	–

No output schema declared.

No examples provided.

saude ~24

Cobertura atual do banco (contagens e última ingestão). Gratuito.

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

scores ~88

Scores fundamentalistas prontos com a conta aberta: Piotroski F-Score (0-9, cada um dos 9 critérios auditável) e o critério de Graham (barato se P/L × P/VP ≤ 22,5). Banco não tem Piotroski. WEGE3 gratuita.

Input Output Examples

Name	Type	Req	Description
chave_api	string	–	–
ticker	string	yes	–

No output schema declared.

No examples provided.

screener ~154

Filtra as 402 empresas por faixas de indicadores. `filtros` é um dict tipo {"roic_min": 0.15, "dl_ebitda_max": 2}. Indicadores: roic, roe, margem_bruta, margem_ebit, margem_liquida, dl_ebitda, cresc_receita_1a, cresc_receita_5a_cagr (sufixos _min/_max). Sem `ano` usa o último de cada empresa. Só valores SEM flag entram. Requer chave_api (grátis ou Pro).

Input Output Examples

Name	Type	Req	Description
ano	–	–	–
chave_api	string	–	–
filtros	object	yes	–

No output schema declared.

No examples provided.

screener_fiis ~163

Filtra os FIIs por faixas. `filtros` é um dict tipo {"pvp_max": 0.9, "dy_min": 0.10, "segmento": "Logística", "cotistas_min": 5000}. Válidos: pvp_min, pvp_max, dy_min, dy_max (limites inclusivos), segmento (match exato, sem caixa) e cotistas_min (piso de liquidez). Só entram valores limpos (P/VP e DY sem flag). Ordena por P/VP crescente, teto de 100. Requer chave_api (grátis ou Pro).

Input Output Examples

Name	Type	Req	Description
chave_api	string	–	–
filtros	object	yes	–

No output schema declared.

No examples provided.

On this page

Handy links

Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

11 Aug 20 Aug

Day	Score
11 Aug	59
12 Aug	60
13 Aug	60
14 Aug	60
15 Aug	61
16 Aug	61
17 Aug	62
18 Aug	62
19 Aug	63
20 Aug	63