MCP Fiscal Brasil
Capped at 70: no passing tool call yet; the tests add up to 100. Why scores are capped
Test points add up to 100; the score is capped at 70 until a tool call passes. Not a quality or security rating. Methodology
Test points before the cap (100/100)
- Install20/20
- Handshake30/30
- Maintenance25/25
- Docs15/15
- License10/10
Transport (tested 2026-10-28): stdio
Score 70/100 · Tools 44 · Token cost ~10,156 · Compare · Last tested 2026-10-28 · Version tested 0.5.1 · Package mcp-fiscal-brasil · Repo DeHor-Labs/mcp-fiscal-brasil
Summary: MCP Fiscal Brasil completed an MCP handshake without credentials and exposed 44 tools.
Evidence summary
- Handshake
- pass
- Tools listed
- 44
- Context cost
- 10,156 model-visible tokens (name, description, inputSchema; tiktoken cl100k_base)
Extra payload (sent by the server, usually not read by the model): 1,598 tokens; raw tools/list total 11,754. Clients differ in what they forward. ranking · add up your servers' context cost - API key
- No key to connect (handshake passed)
- Tested
- 2026-10-28
Test results
| Test | Result | Points | Evidence |
|---|---|---|---|
| install | pass | 20 | uv pip install mcp-fiscal-brasil (Python venv, Linux) succeeded in 1s. |
| handshake | pass | 30 | MCP initialize + tools/list over stdio succeeded with no credentials; 44 tools listed in 6.2s. |
| maintenance | pass | 25 | Repo pushed 1 days before test; 396 GitHub stars. |
| docs | pass | 15 | README over 3,000 chars; install instructions present; mcpServers config example present. Automated check of the package's own README (PyPI long_description (package README)). |
| license | pass | 10 | MIT (OSI-approved). |
Local-model readiness
Schema context cost: ~10,156 tokens for 44 tools (33,757 bytes) · about 124% of an 8k context. Method: tiktoken cl100k_base over compact JSON of name+description+inputSchema (approximate).
Small-model friendly (schema heuristic, not a model result): unknown.
Small-model task runs: Not yet tested.
What we tested and what we didn't
Tested on 2026-10-28
- Install from the registry
- We connected with no credentials and asked for its tool list: it listed 44 tools (Method details: MCP
initializethentools/list) - Maintenance signals (last push, archived/deprecated status)
- Docs (README length, install and config example)
- License (OSI-approved or not)
- Tool-schema token cost (estimate)
Not tested
- Security: not audited (no code review, no permission or data-flow analysis)
- Real tasks (no functional task runs yet)
- Behaviour with real credentials or a real account
- Performance, rate limits or load
- Correctness of results beyond the listed tasks
Methodology: how we test. A high score means it installs and responds, not that it is safe to give it access to your data.
Known security issues
Not yet checked.
Monthly roundup: MCP security issues, October 2026.
Tool list changes
Baseline recorded from the 2026-10-28 test run; changes appear after the next test.
Snapshot hash (fingerprint of the tool list)
78f1d8efad51: SHA-256 of the canonical tool names, descriptions and input schemas. If it changes, the tool list changed.
Raw test record (JSON)
{
"name": "mcp-fiscal-brasil",
"version": "0.5.1",
"registry": "pypi",
"status": "working",
"tested": "2026-10-28",
"tools_count": 44,
"tools_schema_tokens_est": 10156,
"deprecated": false,
"archived": false,
"tests": {
"install": [
"pass",
20,
"`uv pip install mcp-fiscal-brasil` (Python venv, Linux) succeeded in 1s."
],
"handshake": [
"pass",
30,
"MCP `initialize` + `tools/list` over stdio succeeded with no credentials; 44 tools listed in 6.2s."
],
"maintenance": [
"pass",
25,
"Repo pushed 1 days before test; 396 GitHub stars."
],
"docs": [
"pass",
15,
"README over 3,000 chars; install instructions present; `mcpServers` config example present. Automated check of the package's own README (PyPI long_description (package README))."
],
"license": [
"pass",
10,
"MIT (OSI-approved)."
]
}
}Install
uvx mcp-fiscal-brasil
Tools listed
consultar_cnpj, listar_cnpjs_por_nome, validar_cpf, consultar_nfe, validar_chave_nfe, consultar_status_sefaz, parse_nfe_xml, gerar_danfe, validar_assinatura_nfe, baixar_nfe_distribuicao, manifestar_nfe, consultar_nfse, consultar_simples_nacional, analisar_sped, listar_registros_sped, listar_eventos_esocial, validar_evento_esocial, consultar_certidao_federal, consultar_certidao_fgts, analyze_cnpj_compliance, compare_tax_regimes, simular_transicao_reforma_tributaria, risk_score_supplier, consultar_empresas_lote, validate_nfe_full, summarize_sped, consultar_ncm, consultar_cfop, validar_cst, consultar_cest, consultar_aliquota_icms, taxa_selic, ipca_periodo, ptax_data, calcular_correcao_monetaria, consultar_cep, consultar_cnae, buscar_cnae, consultar_municipios_ibge, consultar_estado_ibge
Quick config
{
"mcpServers": {
"mcp-fiscal-brasil": {
"command": "uvx",
"args": [
"mcp-fiscal-brasil"
]
}
}
}Add to config Opens the config generator with this server selected.
Setup
- Install. Run
uv pip install mcp-fiscal-brasil(Python venv). This is the exact command we ran on 2026-10-28. - Configure. Add the mcpServers entry below to your MCP client config.
- Verify. Restart the client and check that tools/list returns tools (44 in our test).
{
"mcpServers": {
"mcp-fiscal-brasil": {
"command": "uvx",
"args": [
"mcp-fiscal-brasil"
]
}
}
}Test history
No dated events yet.
FAQ
Is MCP Fiscal Brasil deprecated?
No. mcp-fiscal-brasil was not deprecated or archived when we last tested it on 2026-10-28.
What replaces MCP Fiscal Brasil?
Nothing; MCP Fiscal Brasil is not deprecated as of 2026-10-28.
Does MCP Fiscal Brasil need an API key?
No. It completed an MCP handshake with no credentials and listed 44 tools.
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