Counterfoil

Connect Remote server

claude mcp add --transport http counterfoil https://einvoicegoblin.com/mcp

{
  "mcpServers": {
    "counterfoil": {
      "url": "https://einvoicegoblin.com/mcp"
    }
  }
}

{
  "servers": {
    "counterfoil": {
      "type": "http",
      "url": "https://einvoicegoblin.com/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://einvoicegoblin.com/mcp

Tools 4 found in our last check

• get_rule

  Read one stored EU e-invoice rule by id. Returns the stored statement, context, test, plain reading, fix, and source URL. Does not check an invoice.

• search_rules

  Find stored rules by words, a BT code, or a group. Each hit returns the stored statement, plain reading, fix, and source URL. At most 100 hits. Does not check an invoice.

• explain_error

  Read a stored rule named in a rule id or a validator message. Returns the stored statement, plain reading, fix, and source URL when a stored rule matches. Does not check an invoice.

• check_invoice

  Read a UBL Invoice XML slice of at most 60000 characters. Returns the business terms that slice writes, the field-map gaps, and one stored note when BR-DE-15 finds no non-empty buyer reference (BT-10). evaluation is false: no Schematron runs. The result does not say the invoice…

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