| FMRS | 67 / 100 · C | 75 / 100 · B |
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| Reliability | 11 / 20 | 10 / 20 |
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| Security and permissions | 14 / 20 | 16 / 20 |
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| Maintenance | 14 / 20 | 18 / 20 |
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| Documentation | 13 / 20 | 17 / 20 |
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| Setup experience | 15 / 20 | 14 / 20 |
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| Best for | - Accounting, ERP, CRM and finance-automation teams serving the Brazilian market.
- Developers who want local, offline NF-e/SPED processing without uploading XML to third parties.
- Users of MCP clients such as Claude or Cursor who want to query Brazilian tax data in natural language.
- Anyone needing offline reference tables such as NCM/CFOP/CST/CEST/ICMS and BCB indexers.
| - Biomedical researchers
- Clinicians
- AI agents that need efficient access to biomedical literature and data analysis
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| Not for | - Users needing US or other non-Brazilian tax capabilities.
- Those expecting official government backing or an official MCP project (this server is maintained by DeHor-Labs, not officially).
- Anyone wanting SEFAZ real-time status, distribution or manifestation without configuring an A1 certificate.
- Large-scale CNPJ lookup by company name, which is experimental with limited coverage.
| - Users needing to write to upstream databases (read-only)
- Users requiring direct access to closed datasets (e.g., COSMIC is not directly integrated)
- Users expecting all advanced features without API keys
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| Required permissions | - Runs locally as an MCP server over stdio; no account or API key required.
- Network access: calls BrasilAPI (cnpj, nfe, and more) plus an optional ReceitaWS fallback.
- Optional A1 digital certificate: requires reading a local .pfx/.p12 file and its password for SEFAZ mTLS and XMLDSig signing.
- Optional environment variables: MCP_FISCAL_LOG_LEVEL, BRASILAPI_BASE_URL, HTTP_TIMEOUT, and NFE_CERTIFICADO_PATH, NFE_CERTIFICADO_SENHA, NFE_EMITENTE_CNPJ, NFE_AMBIENTE.
| - Requires internet access to query public biomedical APIs
- Optional API keys (NCBI, Semantic Scholar, OpenFDA, etc.) to improve rate limits or unlock features
- Local read/write access for skills, cache, and local study data (e.g., `~/.local/share/biomcp`)
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| Risks and side effects | - Third-party sources (BrasilAPI, ReceitaWS, SEFAZ) can be unstable or change, making results stale or failing.
- With an A1 certificate enabled, the certificate file and password are sensitive local assets: inject them via a secrets manager as documented and never commit plaintext passwords.
- Tool outputs and advice (such as risk scores or regime comparisons) are informative and do not replace a professional accountant or legal advice.
- consultar_status_sefaz raises FiscalConfigurationError when no certificate is configured and the HTTP endpoint returns 503; distinguish this from an actual SEFAZ outage.
- The experimental listar_cnpjs_por_nome tool has limited coverage and may return unexpected results.
| - Upstream API rate limits may affect performance
- Some data sources (e.g., KEGG) have licensing terms that restrict non-academic use
- Features requiring API keys (e.g., OncoKB) may be incomplete without them
- Local binary installations need regular updates for compatibility
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| Supported clients | Claude Desktop, Claude Code, Cursor, VS Code + Continue | Claude Desktop, Claude Code, Codex, Other MCP stdio clients |
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| Tools | 25 | 11 |
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