Find companies that fit your product and draft cold emails to the people who decide.
Connects to GrowFast's B2B outreach service. Muse can read a product site to build an ideal customer profile, score matching companies, draft first emails to named decision-makers, clean an existing contact list, and watch Reddit for people asking for the product. Sending runs on a daily limit.
Try asking Muse: "Scan my product site, find ten companies that fit, and draft a first email to the decision-maker at each one."
Source: Found in the official MCP Registry (sh.growfast/growfast) · First listed November 12, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 18 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.
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://growfast.sh/api/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
GrowFast 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://growfast.sh/api/mcpResponse time at the last check: 651ms. 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.
scan_domainRead a product's website and return its ideal customer profile, a first cold email and the best-fit companies scored 1-10. Takes about 30 seconds.import_leadsClean your own list (CSV text with an email column, optional company, name, website) into leads: drops invalid, duplicate, already-emailed, public-sector, role-mailbox (info@, support@) and no-mail-server addresses, and says why. A list that is mostly unmailable is refused whole.get_email_allowanceHow many outreach emails are left this month on the plan.export_outreachEveryone this account has emailed, as CSV: email, company, contact, product, subject, delivery, replied, reply category.list_sending_domainsThe account's sending domains and managed GrowFast address, with remaining sends today.list_autopilotsEvery autopilot on the account (one per product) with its last result.set_autopilotCreate or change the autopilot for one product and turn it on or off. Each day it finds new fits (8/10 or better), writes to the decision-maker and sends within the daily limit.send_replySend the founder's answer to a prospect who replied, in the same thread, from the address they wrote to.list_reddit_monitorsThe Reddit monitors on the account, one per product.set_reddit_monitorSet what to listen for on Reddit for one product. Replaces that product's existing monitor settings. GrowFast finds posts where the author needs the product and drafts a reply and DM; the founder posts them.list_reddit_matchesReddit posts found for a product, best first, with drafted replies.draft_outreach_emailsFor up to 10 companies (for example from scan_domain), find the named decision-maker on each company's own site and write a first email to them. Nothing is sent and nothing is saved: the founder reads and edits the drafts. Takes 10-60 seconds.https://growfast.sh/api/mcpNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use GrowFast to help me. It is a free service with an MCP server at https://growfast.sh/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 12, 2026, 08:36 UTC) the endpoint was working, answering in 651ms. It is checked every 15 minutes.
It was screened on November 12, 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 12 tools, including scan_domain, import_leads, get_email_allowance, export_outreach. For example, you could ask Muse: "Scan my product site, find ten companies that fit, and draft a first email to the decision-maker at each one."
This listing was added from public sources (Found in the official MCP Registry (sh.growfast/growfast)). If you build GrowFast, claim it to correct the details and get your badge.
Paste this on your site or README. It always shows the latest check.
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