Check live fast food prices across 10 US chains, by item, chain and state.
Connects to Fast Food Index, which collects menu prices weekly from the ordering systems of 10 US chains. Muse can look up the national median price of a Big Mac, Whopper or Crunchwrap Supreme, compare prices by state, search menu items, and report recent verified price changes.
Try asking Muse: "What does a Big Mac cost in Texas compared to the national average?"
Source: Found in the official MCP Registry (com.fastfoodindex/fast-food-index) · First listed November 15, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 6 min 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.
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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://api.fastfoodindex.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Fast Food Index 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://api.fastfoodindex.com/mcpResponse time at the last check: 45ms. 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.
get_big_mac_indexThe Fast Food Index Big Mac index: the national median Big Mac price across priced US McDonald's restaurants, its range and extremes, and the median by state with each state vs the national figure. Data collected weekly from McDonald's own ordering system.get_chain_overviewEvery chain Fast Food Index prices (10 US chains): flagship item, its national median price and range, and restaurants priced. Data collected weekly from the chains' own ordering systems.get_item_priceThe price of one menu item at one chain: national median, typical range, restaurants priced, and the cheapest / priciest states (for flagship items) or stores. Chain accepts names like "McDonald's", "taco bell", "bk".get_state_pricesOne US state: its fast-food price index position (percent vs the national basket) and the flagship item medians in that state (Big Mac, Whopper, Chick-fil-A Chicken Sandwich, Crunchwrap Supreme where priced). Accepts a state name or abbreviation.get_price_changesThe latest verified fast-food price changes: gated repricing events (same item, same old and new price, at 40+ restaurants) from the most recent weekly collection round.search_itemsSearch priced menu items by name across all 10 chains (e.g. "nuggets", "frosty", "burrito"). Returns matching items with national medians and restaurant counts.https://api.fastfoodindex.com/mcpNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Fast Food Index to help me. It is a free service with an MCP server at https://api.fastfoodindex.com/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 15, 2026, 01:36 UTC) the endpoint was working, answering in 45ms. It is checked every 15 minutes.
It was screened on November 15, 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 6 tools, including get_big_mac_index, get_chain_overview, get_item_price, get_state_prices. For example, you could ask Muse: "What does a Big Mac cost in Texas compared to the national average?"
This listing was added from public sources (Found in the official MCP Registry (com.fastfoodindex/fast-food-index)). If you build Fast Food Index, claim it to correct the details and get your badge.
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