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Muse + Wayfern

A custom connector is the one door to try.

  • No documented MCP setting
  • A custom connector to try
  • Muse is rolling out in the US
Set it up Create an account

Muse runs errands from WhatsApp and the Muse app, on a computer in Meta's cloud. Meta does not document a way to add an MCP server to Muse.

Muse can make a custom connector for a service that is not in its list. This page shows how to try one that calls the Wayfern REST API with a token. Nobody has tested it yet.

Note:Muse to Wayfern is not tested. Meta's help does not say if a custom connector can use an MCP server or a REST API with a Bearer token.

A custom connector sheet for the Wayfern API fills in line by line: the base URL, the scrape endpoint and a hidden token. Then a stamp lands on it that reads Not tested.

Setup

A custom connector to try.

These steps are a test. Give the token only the web and search scopes, so the connector can do nothing else.

  1. 1

    Create a token

    On the Tokens page, create a token with the web and search scopes. Wayfern shows it one time.

  2. 2

    Ask Muse for the connector

    Ask in chat. Give the token only when Muse asks for it for its Secure Credentials Store.

    prompt

    Create a Custom Connector for the Wayfern API. To read a page, send POST https://api.wayfern.com/api/v1/scrape with the header Authorization: Bearer <token> and a body like {"url": "https://example.com", "formats": ["markdown"]}. Use the markdown in the answer.
  3. 3

    Set the permission

    In Muse, open Settings, Permissions and set the connector to Always ask.

  4. 4

    Test it

    prompt

    Use the Wayfern connector to read https://example.com and tell me the page title.

Route

Try a custom connector on the REST API.

Muse reaches services outside its list through custom connectors with a key. The Wayfern REST API takes a wf_ token in a header, so it is the route to try first.

Remote MCP OAuth sign-in
Not tested
Meta's help does not say that custom connectors speak MCP.
MCP + token Authorization header
Not tested
Meta documents no MCP setting, with or without a header.
Agent skill SKILL.md
No
Muse does not document a shell on its computer.
REST API api.wayfern.com/api/v1
Best fit
The route to try: a custom connector that calls api.wayfern.com/api/v1 with a token.

Example tasks

Errands that need the web

  • 01

    Check opening hours

    “Read the opening hours on the garden centre's site and tell me if it is open on Sunday.”

    POST /api/v1/scrape costs 1 credit a page.

  • 02

    Find the lowest price

    “Read the price of the Dyson V15 on these three shop pages and tell me which is the cheapest.”

    Three scrapes, 1 credit each.

  • 03

    Search for a place

    “Search for vegan restaurants in Austin that are open after 10pm. Give me three with links.”

    POST /api/search/v1 bills 2 credits for each provider page.

  • 04

    Keep a picture

    “Take a screenshot of the event page so I can send it to my sister.”

    POST /api/v1/screenshot costs 5 credits a capture.

Tools

What Muse can call

The same tools on every route, at the REST API rates. Every result reports credits_charged.

All tool inputs
  • scrape_page Fetch one page through an anti-detect browser and return clean markdown, HTML, links and metadata. The screenshot, pdf and json formats add +4 credits (once); summary adds +2. 1 credit / page
  • extract_data Extract structured data from one or more pages with a prompt and an optional JSON Schema. Re-running over pages already fetched is free. 1 credit / uncached source page
  • map_site List a site's URLs from its sitemaps and page links. 2 credits / 10 URLs
  • capture_screenshot Capture a clean image of a page: cookie banners and ads removed, lazy images loaded, tall pages captured end to end. Returns a short-lived download URL and an artifact key, not image bytes. Slices of a full page cost nothing extra; a fail_if_contains match is not charged. 5 credits / capture
  • brand_profile Identity, colours, logos, social links and company metadata for a domain. 10 credits / profile
  • site_styleguide Colours, typography, spacing, radii, shadows and the design tokens a site declares. 10 credits / site
  • site_fonts Font families, where each is served from, available weights, file formats and where they are used. 5 credits / site
  • crawl_site Start a bounded multi-page crawl. Returns a job id immediately and charges nothing up front; pages are billed as the crawl runs. 1 credit / successful page
  • crawl_status Poll a crawl started with crawl_site and read a page of its results. The pages were billed as they were crawled. Free
  • search_web Search Google, Bing, and DuckDuckGo. Returns ranked results, ads, provider failures, pagination, and related queries. 2 credits / provider page
  • list_search_engines List live provider ids and labels. Free

Good to know

Where Muse is
Meta launched Muse on 8 September 2026. It is rolling out in the US, and Meta's Small Business post also names Canada.
Muse plans
Muse is free with a usage limit. Power is $20 a month and Maximum is $100 a month.

More agents

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Connect Muse in a minute.

Sign in once and the tools appear. Tool calls use the credits of your Wayfern plan, at the same rates as the API.

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