Stockmarket Loans: Broker Margin Rates
Compare published margin loan rates across US brokers and see what borrowing against your portfolio would cost.
Looks up published US broker margin rate schedules by balance tier and compares brokers at any loan amount. Calculates interest per month and over a set period, and can add a rate you were quoted for a side-by-side check. No sign-in required. Figures come from each broker's published schedule and are dated.
Try asking Muse: "Compare margin rates at Schwab, Fidelity and Interactive Brokers for a $100,000 loan held for 12 months."
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Source: Found in the official MCP Registry (loans.stockmarket/stockmarket-loans) · First listed November 1, 2026
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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://stockmarket.loans/mcpNot 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
Stockmarket Loans: Broker Margin Rates 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://stockmarket.loans/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 295ms. Worked in n/a of checks over 30 days.
Screening · November 1, 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
get_margin_ratesOne broker's published margin rate schedule: every balance tier with its annual rate and the broker's own wording for how it is set, the base rate and its date, whether tiers blend, maintenance and minimum-equity notes, the schedule date, our check date and the broker's source URcompare_brokersEvery compared broker's published annual margin rate on one loan balance, ranked from lowest to highest (ties shared), with the tier that applies, the yearly interest at that rate, schedule dates and source links. Brokers that print no rate at that balance are listed separately wborrowing_costWhat a margin loan costs over a number of months at every compared broker's published rate, as the site's margin interest calculator works it: rate, interest per month, total over the period and the extra cost versus the lowest rate, simple interest on a flat balance. Optionally Link
https://stockmarket.loans/mcpQuestions about Stockmarket Loans: Broker Margin Rates in Muse
How do I connect Stockmarket Loans: Broker Margin Rates to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Stockmarket Loans: Broker Margin Rates to help me. It is a free service with an MCP server at https://stockmarket.loans/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.
Is Stockmarket Loans: Broker Margin Rates working right now?
At the last check (November 1, 2026, 22:16 UTC) the endpoint was working, answering in 295ms. It is checked every 15 minutes.
Is Stockmarket Loans: Broker Margin Rates safe to connect to Muse?
It was screened on November 1, 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 Stockmarket Loans: Broker Margin Rates do in Muse?
It exposes 3 tools, including get_margin_rates, compare_brokers, borrowing_cost. For example, you could ask Muse: "Compare margin rates at Schwab, Fidelity and Interactive Brokers for a $100,000 loan held for 12 months."
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