# Dunn Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## Dunn

Work out invoice due dates, late fees and polite payment reminders so you get paid on time.

- Record: https://musedirectory.ai/connector/dunn
- Category: Finance & Bills
- Developer: Dunn (https://getdunn.org/ai)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 272ms, checked 2026-11-03T04:31:13Z
- Endpoint: https://getdunn.org/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-11-03T04:31:13Z)
- Source: Found in the official MCP Registry (org.getdunn/dunn) https://registry.modelcontextprotocol.io/v0/servers?search=org.getdunn%2Fdunn

Free invoice tools. Calculates due dates from payment terms like net 30 or 2/10 net 30, works out late fees and how many days late an invoice is, and writes payment reminder emails that get firmer as a bill ages. No account or sign-in needed.

Example request: "Figure out when the invoice I sent on March 3 with net 30 terms is due, and draft a reminder if it's late."

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Dunn to help me. It is a free service with an MCP server at https://getdunn.org/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- invoice_due_date: Exact due date for an invoice from its date and payment terms ("net 30", "due on receipt", "EOM", "net 30 EOM", "2/10 net 30"), including any early-payment discount date.
- late_fee_calculator: Works out a late fee: the amount, the new total, the exact day it applies, a ready-to-use line for the invoice, and whether the fee is in the usual range.
- how_late_is_this_invoice: How many days late an invoice is (or until it is due), and what to send the client now and next, following a proven reminder schedule.
- payment_reminder_email: Writes the right payment reminder for where the invoice is now (before due, due today, late, or a final notice), with subject line. Polite by default; firm on request.

Screening checks:
- MCP handshake: pass (Answered in 272ms)
- Domain against threat feeds (Cloudflare security DNS): pass (getdunn.org not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (4 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (Domain registered 60 days ago)
- AI review of purpose and tool behavior: pass (No concerns)