Makes phone calls in Japanese or English and reports back what was said.
Connects Muse to a service that places real phone calls in Japanese or English. Muse can ask it to call a business, then read back the outcome and a transcript of the conversation.
Try asking Muse: "Call the dentist and ask if they have any openings on Friday afternoon."
Source: Found in the official MCP Registry (jp.callout/callout) · First listed November 15, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 1 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.
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://mcp.callout.jp/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Callout 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://mcp.callout.jp/mcpResponse time at the last check: 385ms. Worked in 100% of checks over 30 days.
Screened, needs a closer look
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.
callout_create_callPlaces a real outbound phone call through Callout's voice agent and returns a call_id at once; the call itself runs in the background and is billed to the signed-in Callout account. Destinations: numbers in Japan, the US and Canada. A call lasts up to 4 minutes (one credit); max_callout_get_call_statusGet the current status of a Callout call: queued (not dialed yet), initiated, ringing, in-progress (answered), or once it has ended Twilio's final status (completed, no-answer, busy, failed, canceled).callout_wait_for_call_completionWaits until a call reaches a final status or the timeout is reached, and returns the status. Calls usually take 1 to 3 minutes.callout_get_call_resultThe structured result of a completed call. outcome is one of ok (someone answered and the conversation took place, whatever came of it: read summary), needs_human (the other side will only deal with the user, or the matter needs the user's decision), needs_website (they said it mcallout_get_transcriptGet the transcript of a completed call.https://mcp.callout.jp/mcpNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Callout to help me. It is a free service with an MCP server at https://mcp.callout.jp/mcp. It needs an API key from Callout; 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 15, 2026, 17:30 UTC) the endpoint was working, answering in 385ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
It was screened on November 15, 2026 with the result "screened, needs a closer look". 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 callout_create_call, callout_get_call_status, callout_wait_for_call_completion, callout_get_call_result. For example, you could ask Muse: "Call the dentist and ask if they have any openings on Friday afternoon."
This listing was added from public sources (Found in the official MCP Registry (jp.callout/callout)). If you build Callout, claim it to correct the details and get your badge.
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