MCP server for Brazilian e-invoicing: NF-e and NFC-e (modelo 55/65), schema 4.00, SEFAZ.
MCP server for Brazilian e-invoicing: NF-e and NFC-e (modelo 55/65), schema 4.00, SEFAZ.
Add the server to your MCP client configuration. For Claude Desktop, edit claude_desktop_config.json:
mcp-einvoicing-core (installed automatically as a dependency)Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.
Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| br__validate_cpf | Validates a CPF (Cadastro de Pessoas Físicas), the individual taxpayer identification number, using the Receita Federal modulo 11 algorithm. |
| br__validate_cnpj | Validates a CNPJ (Cadastro Nacional da Pessoa Jurídica), the business taxpayer identification number. Accepts both the traditional numeric format (14 digits) and the alphanumeric format introduced by NT 2026.004 (PL_010d |
| br__generate_nfe | Returns {"xml": ..., "chave_acesso": ..., "warnings": [...]}. The warnings in Portuguese remind that the document is **not signed** (ICP-Brasil) and **was not transmitted to SEFAZ**. Both steps are the responsibility of |
| br__validate_nfe_xml | Validates an NF-e/NFC-e 4.00 XML document against the official PL_010d XSD (local "unsigned" variant, see note below). |
| br__build_access_key | Builds an access key (chNFe, 44 characters) with a modulo 11 check digit, from the components cUF, dhEmi, issuer CNPJ, model, series, and document number. |
| br__generate_cte | |
| br__validate_cte_xml | Validates a CT-e 4.00 XML document against the bundled PL_CTe_400 XSD (auto-selects the unsigned or official signed schema based on <ds:Signature> presence). |
| br__consult_cte_sefaz_status | Checks SEFAZ CT-e webservice availability (CTeStatusServicoV4). Read-only, no confirmation required. |
| br__consult_cte | Queries a CT-e's status by access key (CTeConsultaV4). Read-only, no confirmation required — it queries one already-known document, not a bulk data pull. |
| br__submit_cte | Submits a signed CT-e to SEFAZ authorization (CTeRecepcaoSincV4, synchronous). The payload is automatically GZip-compressed and Base64-encoded before transmission, per the CT-e MOC. Gated with a two-step confirmation (Co |
| br__cancel_cte | Requests cancellation of an authorized CT-e (event 110111, CTeRecepcaoEventoV4). cStat=135 indicates the cancellation was homologated. Gated. |
| br__correct_cte | Issues a Carta de Correção Eletrônica (event 110110, CTeRecepcaoEventoV4). Per Art. 58-B of CONVÊNIO/SINIEF 06/89, a CC-e cannot alter tax values, party registration data, or the issue/departure date. Gated. |
claude mcp add nfe-br -- uvx mcp-nfe-brmcp-einvoicing-core (installed automatically as a dependency)Store entities, relations and observations in a local knowledge graph with the reference Memory MCP server.
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