Audit medical bills against Medicare rates and federal data to spot billing errors and dispute them.
Cross-references medical charges against CMS Medicare rates, hospital quality ratings, and federal billing rules. Identifies potential overcharges and provides dispute language backed by federal statutes. Preview free; full reports with dispute letters require payment.
Try asking Muse: "Check if my hospital bill for an ER visit matches what Medicare allows for that procedure code."
Source: Found in the official MCP Registry (io.github.DGOnlineCode/medibill-saver) · First listed September 24, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 5 h ago.
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
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://www.medibillsaver.com/api/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
MediBill Saver 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://www.medibillsaver.com/api/mcpResponse time at the last check: 185ms. Worked in 0% 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.
lookup_cpt_rateReturns the Medicare national-average non-facility allowed amount for a CPT or HCPCS procedure code from the CMS Physician Fee Schedule. Useful for benchmarking what a hospital or clinic billed against what Medicare reimburses. Free, no authentication required. For the patient-falookup_hospitalReturns hospital metadata from CMS data: name, location, ownership type, CMS overall rating (1-5 stars), and 501(c)(3) charity-care eligibility. Useful when a patient mentions a specific hospital and wants to know the facility's federally-published quality profile and whether chaget_dispute_scenarioReturns a summary of one MediBill Saver dispute scenario: title, category, the federal statute backing the patient's right to dispute, and a link to the full scenario page (which contains the how-to-spot checklist and sample dispute language). Useful when a patient asks 'how do Ilist_dispute_scenariosReturns the full index of dispute scenarios MediBill Saver covers — slug, title, category, and the federal statute. Useful to discover which scenarios exist before calling get_dispute_scenario. Free, no authentication required.audit_medical_billRuns a full audit on a medical bill — cross-references every charge against six federal data sources (CMS PFS, NADAC, HPT, NCCI, Hospital Compare, IRS Pub 78) and identifies potential billing errors plus the federal statutes the patient can cite. Returns a free preview (severity,https://www.medibillsaver.com/api/mcpNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use MediBill Saver to help me. It is a free service with an MCP server at https://www.medibillsaver.com/api/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.
At the last check (November 13, 2026, 10:15 UTC) the endpoint was having trouble, answering in 185ms. Over the last 7 days it answered 0% of health checks. It is checked every 15 minutes.
It was screened on September 24, 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 5 tools, including lookup_cpt_rate, lookup_hospital, get_dispute_scenario, list_dispute_scenarios. For example, you could ask Muse: "Check if my hospital bill for an ER visit matches what Medicare allows for that procedure code."
This listing was added from public sources (Found in the official MCP Registry (io.github.DGOnlineCode/medibill-saver)). If you build MediBill Saver, claim it to correct the details and get your badge.
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