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mcp/harbor
Verified official

Dunn MCP

v1.0.0

org.getdunn/dunn

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

transport:streamable-http tools:4
Website

Target client

run in your project directory 

claude mcp add --transport http dunn https://getdunn.org/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

invoice_due_date

invoice due date

late_fee_calculator

late fee calculator

how_late_is_this_invoice

how late is this invoice

payment_reminder_email

payment reminder email

All 4 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.