Dunn for Claude.ai

org.getdunn/dunn

Free invoice tools: due dates from payment terms, late fees, days late, payment reminder emails.

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

Install Dunn in Claude.ai

Settings → Connectors → Add custom connector

https://getdunn.org/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

invoice_due_date
late_fee_calculator
how_late_is_this_invoice
payment_reminder_email

Dunn in other clients

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

Dunn MCP server