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Receita Federal SICALC: Gerar DARF, official-source lookup. Platform-hosted, pay per query with prep
Streamable HTTP
https://api.mcp.ai/p_receita_federal_sicalc_darfclaude mcp add --transport http receita-federal-sicalc-darf-mcp https://api.mcp.ai/p_receita_federal_sicalc_darfThis server publishes no installable package.