Dry Run
Monte Carlo cash-flow simulator for small services businesses to test survival odds and find the best levers to pull.
Simulates 52 weeks of cash flow for a small services business (excavation, plumbing, HVAC, landscaping, roofing) 10,000 times to show the odds of running short, when it's most likely to happen, and which operational changes (pricing, payment terms, crew size, overhead) reduce that risk most.
Try asking Muse: "Show me the chance my plumbing business runs out of cash in the next year and which single change would help most."
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Source: Found in the official MCP Registry (com.modernmustardseed/dry-run) · First listed October 29, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 2 h ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
How to add it to Muse
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://mcp.modernmustardseed.com/dry-runNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
Dry Run is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
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.
- 4
Use it in a chat
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
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
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://mcp.modernmustardseed.com/dry-runWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 315ms. Worked in 100% of checks over 30 days.
Screening · October 29, 2026
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.
Tools · 3
simulate_cash_yearSimulate the next 52 weeks of a small services business 10,000 times (Monte Carlo) and report the chance it runs short of money, the week that is most likely to happen, reachable money (bank balance plus unused credit) week by week at the 10th, 50th and 90th percentile, the driverank_leversTest nine single changes a small business owner can make and rank them by how much each lowers the chance of running short of money in the next 52 weeks, with the change in year-end money as a tiebreak. The levers: take a third up front, take 15 days off payment terms, raise priclist_presetsList the six built-in business presets (excavation and septic, plumbing and drain, heating and cooling, landscaping and snow, roofing, and a general small services business) with every default input in the exact field names a simulation accepts, and the revenue, costs and profit Recent checks
Link
https://mcp.modernmustardseed.com/dry-runQuestions about Dry Run in Muse
How do I connect Dry Run to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Dry Run to help me. It is a free service with an MCP server at https://mcp.modernmustardseed.com/dry-run. 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.
Is Dry Run working right now?
At the last check (October 29, 2026, 10:16 UTC) the endpoint was working, answering in 315ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is Dry Run safe to connect to Muse?
It was screened on October 29, 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.
What can Dry Run do in Muse?
It exposes 3 tools, including simulate_cash_year, rank_levers, list_presets. For example, you could ask Muse: "Show me the chance my plumbing business runs out of cash in the next year and which single change would help most."
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This listing was added from public sources (Found in the official MCP Registry (com.modernmustardseed/dry-run)). If you build Dry Run, claim it to correct the details and get your badge.
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