# Moltline Shopify Prep Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## Moltline Shopify Prep

Validate Shopify product CSVs, handles, variants and metafields before import

- Record: https://musedirectory.ai/connector/moltline-shopify-prep
- Category: Shopping & Commerce
- Developer: Moltline Studio (https://moltlinestudio.com/servers.html#shopify)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 1237ms, checked 2026-09-28T07:46:03Z
- Endpoint: https://mcp.moltlinestudio.com/shopify
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-09-24T16:46:10Z)
- Source: Found in the official MCP Registry (com.moltlinestudio/shopify) https://registry.modelcontextprotocol.io/v0/servers?search=com.moltlinestudio%2Fshopify

Checks product CSV headers against current Shopify columns, generates valid URL handles, calculates variant counts, validates metafield keys, and estimates pricing changes and payouts. Four tools free, two premium.

Example request: "Check if my product CSV columns are correct before importing 500 items to my Shopify store"

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Moltline Shopify Prep to help me. It is a free service with an MCP server at https://mcp.moltlinestudio.com/shopify. 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.

Tools:
- product_csv_check: Check a product CSV's header row against Shopify's current columns. FREE. Catches the failure that wastes the most time: a template copied from an out-of-date guide, using column names Shopify renamed. Typical input {"header_row": ["Handle", "Title", "Body (HTML)", "Variant Price
- url_handle: Turn a product title into a valid, unique Shopify URL handle. FREE. Shopify handles are lowercase, may contain letters, numbers and dashes, and may not contain spaces. Typical input {"title": "Men's Merino Wool Socks (2-Pack)"} returns {"handle": "mens-merino-wool-socks-2-pack", 
- variant_matrix: Count the variants a set of options produces, and flag the ceilings. FREE. Option counts multiply, so three modest lists become a number nobody intended. Typical input {"options": {"Size": ["S", "M", "L"], "Colour": ["Black", "Navy"]}} returns {"option_count": 2, "variant_count":
- metafield_key_check: Validate a metafield namespace and key before you define it. FREE. Shopify metafield namespaces and keys are lowercase alphanumerics and underscores; a capital letter or a dash is rejected at definition time, usually after the rest of the import has already run. Typical input {"n
- bulk_price_change: Apply one pricing rule across a list of prices and show the effect. PREMIUM (license). Percentage first, then the flat amount, then rounding — stated explicitly because the order changes the answer. Typical input {"prices": [19.99, 24.5], "change_pct": 10, "charm_ending": ".99"} 
- payout_estimate: Estimate what actually lands in the bank after processing fees. PREMIUM (license). Typical input {"order_total": 84.5, "fee_pct": 2.9, "fee_fixed": 0.3, "orders": 120, "refund_rate_pct": 4} returns {"gross": 10140.0, "fees": 330.06, "refunds": 405.6, "net_payout": 9404.34, "effec

Screening checks:
- MCP handshake: pass (Answered in 618ms)
- Domain against threat feeds (Cloudflare security DNS): pass (mcp.moltlinestudio.com, moltlinestudio.com not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (6 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)