Atlas entry

`dadosb3.com`

36 capabilities over MCP. First atlas observation.

Observed 6 Nov 2026, 12:04 UTC · passive: no tools called, no credentials sent · sha256:678ec3…341d

36 tools. 34 only read. 2 have no reading.

AI reading, beta. side-effects v1 on claude-haiku-5.5, calibrated on MCP (golden-3). Only readings above a measured precision count. Counts are tools, not calls: no tool was called.

AI readings summary · beta

The service lists 36 tools, and 34 have AI readings.

34 tools are read as read-only, including indicadores_anuais, bancos and quanto_rendeu.

Written by code from the AI readings on this page: it groups them and says nothing they do not.

What an agent can do here

AI readings, beta · Readings on 34 of 36 MCP tools.

Moves money
0
No tool read this way.
Deletes or cancels records
0
No tool read this way.
Sends messages to people
0
No tool read this way.
Changes permissions
0
No tool read this way.
Runs code
0
No tool read this way.
Should ask a person first
0
No tool read this way.

No counted reading 2 tools No reading was counted, so any effect above is possible for them: auditar_amostra, dicionario.

What changed

First atlas observation. Atlas history

Look first

AI reading, beta: AI adds items here; it never removes one.

No tool is read as one of the six effects. A zero is a count, not a clearance.

Surfaces

5 protocols checked

ARD	Not found	No document retrieved
A2A	Not found	0 skills
MCP	Valid	2026-07-28 · 36 tools · 0 resources · 0 prompts
OpenAPI	Not detected	0 operations
WebMCP	Not detected	0 declarative form tools · experimental

Exact states and meaning

ARD
absent
Exact state: not found · No document retrieved
The supported discovery location returned no matching document.
Not found does not prove the service exposes no such interface elsewhere.
Not observed / not fetched
A2A
absent
Exact state: not found · 0 skills
The supported discovery location returned no matching document.
Not found does not prove the service exposes no such interface elsewhere.
Not observed / not fetched
MCP
observed
Exact state: valid · Revision 2026-07-28 · 36 tools · 0 resources · 0 prompts
A usable protocol document was retrieved and validated.
Directly observed
OpenAPI
absent
Exact state: not detected · 0 operations
No endpoint was established from the evidence and scope that InterfaceDelta inspected.
Not detected does not prove that no endpoint exists.
Not observed / not fetched
WebMCP
absent
Exact state: not detected · 0 declarative form tools · experimental
No named declarative WebMCP form tools were observed in the origin root HTML.
Script-registered tools and other pages are not observed, so this does not mean the site has no WebMCP tools.
Not observed / not fetched

36 · inventory complete

Showing 36 of 36.

Tool and inputs							◇ AI reading, beta · confidence
Read as none of the six 34 Not a clearance.
ate, cnpj, de, servico							Reads only0.80
`acessos_telecom` inputs `ate`, `cnpj`, `de`, `servico` AI Reads only 0.80
ticker							Reads only0.85
`bancos` inputs `ticker` AI Reads only 0.85
ate, chave_api, de, serie and 2 more							Reads only0.92
`bdr` inputs `ate`, `chave_api`, `de`, `serie` and 2 more AI Reads only 0.92
ate, chave_api, de, media_curta and 2 more							Reads only0.80
`desempenho` inputs `ate`, `chave_api`, `de`, `media_curta` and 2 more AI Reads only 0.80
chave_api, ticker*							Reads only0.92
`dividendos` inputs `chave_api`, `ticker` (required) AI Reads only 0.92
ate, chave_api, de, serie and 1 more							Reads only0.90
`etf` inputs `ate`, `chave_api`, `de`, `serie` and 1 more AI Reads only 0.90
no inputs							Reads only0.86
`etfs_ranking` AI Reads only 0.86
chave_api, ticker*							Reads only0.88
`eventos` inputs `chave_api`, `ticker` (required) AI Reads only 0.88
chave_api, ticker*, trimestral							Reads only0.90
`fatos_contabeis` inputs `chave_api`, `ticker` (required), `trimestral` AI Reads only 0.90
categoria, limite, ticker							Reads only0.92
`fatos_relevantes` inputs `categoria`, `limite`, `ticker` AI Reads only 0.92
ate, chave_api, de, serie and 1 more							Reads only0.88
`fii` inputs `ate`, `chave_api`, `de`, `serie` and 1 more AI Reads only 0.88
chave_api							Reads only0.88
`fiis_ranking` inputs `chave_api` AI Reads only 0.88
chave_api, limite, ticker*							Reads only0.88
`fundos_da_acao` inputs `chave_api`, `limite`, `ticker` (required) AI Reads only 0.88
busca, cnpj, limite							Reads only0.89
`fundos_investimento` inputs `busca`, `cnpj`, `limite` AI Reads only 0.89
no inputs							Reads only0.85
`hoje` AI Reads only 0.85
chave_api, ticker*							Reads only0.90
`indicadores_anuais` inputs `chave_api`, `ticker` (required) AI Reads only 0.90
ate, chave_api, codigo, de and 3 more							Reads only0.84
`indice` inputs `ate`, `chave_api`, `codigo`, `de` and 3 more AI Reads only 0.84
no inputs							Reads only0.90
`listar_empresas` AI Reads only 0.90
chave_api, limite, lista							Reads only0.90
`listas` inputs `chave_api`, `limite`, `lista` AI Reads only 0.90
nome							Reads only0.90
`metodologia` inputs `nome` AI Reads only 0.90
chave_api, ticker*							Reads only0.88
`multiplos` inputs `chave_api`, `ticker` (required) AI Reads only 0.88
ate, campos, chave_api, de and 2 more							Reads only0.93
`precos` inputs `ate`, `campos`, `chave_api`, `de` and 2 more AI Reads only 0.93
ate, campo, cnpj, de and 3 more							Reads only0.86
`producao_petroleo_gas` inputs `ate`, `campo`, `cnpj`, `de` and 3 more AI Reads only 0.86
ticker*							Reads only0.85
`quanto_rendeu` inputs `ticker` (required) AI Reads only 0.85
chave_api, ticker*							Reads only0.88
`reapresentacoes` inputs `chave_api`, `ticker` (required) AI Reads only 0.88
ano							Reads only0.84
`saiu_da_bolsa` inputs `ano` AI Reads only 0.84
no inputs							Reads only0.88
`saude` AI Reads only 0.88
chave_api, ticker*							Reads only0.86
`scores` inputs `chave_api`, `ticker` (required) AI Reads only 0.86
ano, as_of, chave_api, filtros* and 2 more							Reads only0.85
`screener` inputs `ano`, `as_of`, `chave_api`, `filtros` (required) and 2 more AI Reads only 0.85
chave_api, filtros*							Reads only0.88
`screener_fiis` inputs `chave_api`, `filtros` (required) AI Reads only 0.88
ate, cnpj, de							Reads only0.90
`tarifas_energia` inputs `ate`, `cnpj`, `de` AI Reads only 0.90
ate, data, de, titulo and 1 more							Reads only0.88
`tesouro_direto` inputs `ate`, `data`, `de`, `titulo` and 1 more AI Reads only 0.88
chave_api, ticker*							Reads only0.92
`trimestres` inputs `chave_api`, `ticker` (required) AI Reads only 0.92
ticker*							Reads only0.90
`veredito` inputs `ticker` (required) AI Reads only 0.90
No counted reading 2 No reading was counted, so any effect is possible.
n, semente*	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`auditar_amostra` inputs `n`, `semente` (required)
no inputs	unknown	unknown	unknown	unknown	unknown	unknown	No reading
`dicionario`

Read as this effect No reading: unknown Not read as this effect◇ AI readings, beta. A zero is a count, not a clearance.

Not observed in this Passport: A2A skills, MCP resources, MCP prompts, OpenAPI operations.

The atlas shows each capability by its plain identifier, inputs and declared sign-in. Publisher descriptions, paths, links and source evidence are not published here.

The comparison with the previous observation is shown only to the account that recorded it.

Atlas history

1 observation

6 Nov 2026, 12:04 UTC36 capabilities · MCP 2026-07-28 · MCP endpoint validFirst observation
Fingerprint and versions
Fingerprint
678ec399414fdcd72c3af573a30dbce0574c3bf5024a4355383e02aa0172341d
Passport schema
0.5.0, passport-semantic-v4
Consistency
MCP_PROMPTS_ADVERTISEMENT_LIST: match · MCP_RESOURCES_ADVERTISEMENT_LIST: match · MCP_TOOLS_ADVERTISEMENT_LIST: match · OPENAPI_MCP_EXPLICIT_MAPPING: not applicable

Each class compares an observation with the previous atlas observation. Runs of unchanged observations are grouped. Struck values are what the previous observation recorded; inserted values are what this one recorded.

Declared and observed

36 tools declare hints; the AI readings agree with all 34 that have a reading.

A disagreement is not a finding about the service: either side can be wrong. How we compare declarations and readings.

About this entry

io.github.Val7h/dados-b3
Listed
Official MCP Registry · first listed 5 Nov 2026 · last listed 5 Nov 2026

Passive observations of a public interface listed in the Official MCP Registry. An observation does not verify security, ownership or compliance, and InterfaceDelta assigns no scores or rankings. Methodology · Report an inaccuracy · Ask for removal

Identity and snapshot

Target key: sha256:2f4d57fc5f83d4c63db3b1460fa9852220958013da7ced7a3c4b219d8818cd21
Locator SHA-256: 9473988dc116ba09280c67530e677fdd8cd64d9b3ac1c6b70b749f7d0ba3b23d
Snapshot generated: 11 Nov 2026, 22:36 UTC

The entry is one exact observed target, not a real-world service identity, and implies no ownership. Endpoint paths are not published; the locator hash lets an operator confirm their own URL.

Capability facts

As observed from outside, at the time below

Observed: 6 Nov 2026, 12:04 UTC
Signed: 6 Nov 2026, 23:28 UTC

Protocols: MCP
Tools: 36
Declared sign-in: None declared

Effects counted AI readings, beta

Moves money: 0
Deletes or cancels records: 0
Sends messages to people: 0
Changes permissions: 0
Runs code: 0
Asks a person: 0

36 tools examined; 34 counted above a measured threshold.

Declared vs read disagreements

Declared read-only, read as writing: 0
Declared destructive, read as not writing: 0
Declared non-destructive, read as deleting: 0
Declared closed-world, read as reaching out: 0

Change since previous: First observation
Label status: Current