Draft invoices and Stripe payment links for your clients, with you deciding when to send them.
Connects Muse to an InvoiceFlow account. Muse can check and create client records, draft invoices with line items, list invoices by status, and fetch a Stripe Checkout payment link to share. Drafts are not emailed, so you send them yourself. Requires an InvoiceFlow API key.
Try asking Muse: "Draft a $2,500 invoice for Maria Chen's website redesign, due in 30 days, and give me the payment link."
Source: Found in the official MCP Registry (io.github.EarthyPunyapat/invoiceflow) · First listed November 2, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 2 h ago.
What Muse can see: You sign in to your own account with it, so Muse can reach what that account allows. Read what it asks for before you agree.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
Sensitive: this app deals with your money. Only connect it if you are comfortable with Muse reading that information.
musedirectory.ai is not part of Meta. More about how Muse handles your information
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. 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.
https://invoiceflow-ten-azure.vercel.app/api/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
InvoiceFlow is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
In Claude, open Settings, then Connectors.
Choose Add custom connector, give it a name, and paste the link.
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://invoiceflow-ten-azure.vercel.app/api/mcpResponse time at the last check: 359ms. Worked in n/a of checks over 30 days.
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
invoiceflow_whoamiCheck which InvoiceFlow account this key belongs to and that the key works. Call this first; it is the cheapest way to fail early.invoiceflow_create_clientCreate a customer record. A client is required before an invoice can be created. Returns the new client id.invoiceflow_list_clientsList existing clients. Use this before create_client to avoid making duplicate customer records.invoiceflow_create_invoiceCreate a DRAFT invoice for an existing client. Amounts are INTEGER CENTS: unitPrice 25000 means $250.00, not $25,000. Do not send totals - the server derives subtotal and total from the line items. Does not email anyone.invoiceflow_list_invoicesList invoices with their status and totals. Invoices belonging to other accounts are not visible and return as absent, not as errors.invoiceflow_get_invoiceFetch one invoice by id, including line items and derived totals.invoiceflow_share_invoiceGet the payable Stripe Checkout link for an invoice. This is what you give a human so they can actually pay. Does not email anyone.https://invoiceflow-ten-azure.vercel.app/api/mcpNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use InvoiceFlow to help me. It is a free service with an MCP server at https://invoiceflow-ten-azure.vercel.app/api/mcp. It needs an API key from EarthyPunyapat; ask me to enter it through your secure credential prompt. 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.
At the last check (November 2, 2026, 02:11 UTC) the endpoint was working, answering in 359ms. It is checked every 15 minutes.
It was screened on November 2, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
It exposes 7 tools, including invoiceflow_whoami, invoiceflow_create_client, invoiceflow_list_clients, invoiceflow_create_invoice. For example, you could ask Muse: "Draft a $2,500 invoice for Maria Chen's website redesign, due in 30 days, and give me the payment link."
This listing was added from public sources (Found in the official MCP Registry (io.github.EarthyPunyapat/invoiceflow)). If you build InvoiceFlow, claim it to correct the details and get your badge.
Paste this on your site or README. It always shows the latest check.
<a href="https://musedirectory.ai/connector/invoiceflow"><img src="https://musedirectory.ai/badge/invoiceflow.svg" alt="InvoiceFlow on musedirectory.ai" width="236" height="40"></a>