NormAPI for Claude.ai

com.normapi/mcp

Validate, generate and read German e-invoices (XRechnung, ZUGFeRD) against the official KoSIT rules.

client:Claude.ai transport:streamable-http runtime:npm tools:4

Install NormAPI in Claude.ai

Settings → Connectors → Add custom connector

https://normapi.com/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

validate_invoice
parse_invoice
generate_invoice
explain_rule

NormAPI in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

NormAPI MCP server