Manage your Swell headless-commerce store — products, orders, customers, and subscriptions. Hosted by usefulapi — connect from Claude, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"swell": {
"url": "https://swell.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"swell": {
"type": "http",
"url": "https://swell.usefulapi.io/mcp"
}
}
}Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.
The login page asks for your Swell store id and Swell secret API key.
Find both in the Swell dashboard → Developer → API keys (use a secret key, not a public one). Your credentials are used only to call the API on your behalf and to derive a private account id; they are never shown to anyone.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Swell store id and Swell secret API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
Turn on the Swell connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
swell_list_products | read | List products List products in the store, with MongoDB-style filtering, sorting, search, field selection, and expansion. Swell backend REST API: GET /products. |
swell_get_product | read | Get a product Fetch a single product by its record id or its slug. Supports `expand` and `fields`. Swell backend REST API: GET /products/{id}. |
swell_list_categories | read | List categories List product categories, with filtering, sorting, search, and expansion. Swell backend REST API: GET /categories. |
swell_list_orders | read | List orders List orders, with MongoDB-style filtering, sorting, search, and expansion. Swell backend REST API: GET /orders. |
swell_get_order | read | Get an order Fetch a single order by its record id or its order number. Supports `expand` and `fields`. Swell backend REST API: GET /orders/{id}. |
swell_list_customers | read | List customers List customers. In Swell, customers are the `accounts` model — this queries GET /accounts, with filtering, sorting, search, and expansion. |
swell_get_customer | read | Get a customer Fetch a single customer (Swell `accounts` model) by id. Supports `expand` and `fields`. Swell backend REST API: GET /accounts/{id}. |
swell_list_carts | read | List carts List shopping carts (including abandoned carts), with filtering, sorting, and expansion. Swell backend REST API: GET /carts. |
swell_list_subscriptions | read | List subscriptions List subscriptions, with filtering, sorting, and expansion. Swell backend REST API: GET /subscriptions. |
swell_get_subscription | read | Get a subscription Fetch a single subscription by id. Supports `expand`. Swell backend REST API: GET /subscriptions/{id}. |
swell_list_invoices | read | List invoices List invoices (typically subscription invoices), with filtering, sorting, and expansion. Swell backend REST API: GET /invoices. |
swell_list_coupons | read | List coupons List discount coupons, with filtering and sorting. Swell backend REST API: GET /coupons. |
swell_query | read | Query any collection (read-only) Power tool: read-only (GET only) access to ANY Swell model not covered by a dedicated tool — e.g. stock, promotions, giftcards, payments, shipments, settings. Supply the collection name plus the usual list params (limit, page, where, sort, expand, fields, search). Swell backend REST API: GET /{collection}. |
swell_create_product | write | Create a product MUTATES LIVE STORE DATA. Create a new product in the store. Provide the common fields directly (name is required); anything else goes in `fields`, which is merged into the request body. Swell backend REST API: POST /products. |
swell_update_product | write | Update a product MUTATES LIVE STORE DATA. Partially update an existing product by id. Provide the id plus a `fields` object of attributes to change. Swell backend REST API: PUT /products/{id}. |
swell_update_order | write | Update an order MUTATES A LIVE ORDER. Partially update an existing order by id — e.g. change status, fulfillment, or notes. Provide the id plus a `fields` object of attributes to change, e.g. {"status":"complete"}. Swell backend REST API: PUT /orders/{id}. |
swell_usage_status | Usage status (free-tier meter) Report the caller's current free-tier usage this month: calls used, monthly limit, remaining, and whether the cap is reached. Read-only; does not count against the meter. | |
swell_request_feature | Request a missing feature Tell usefulapi that the user needs something the Swell tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. | |
swell_upgrade | Upgrade to Pro (unlimited) Subscribe to the Pro plan for UNLIMITED Swell tool calls (the free tier caps monthly usage). Choose monthly ($9/month) or yearly ($90/year — 2 months free) billing. Returns a Stripe Checkout link to open in your browser; after payment your account upgrades automatically. Does not count against the meter. | |
swell_cancel_subscription | Cancel the Pro subscription Cancel the caller's Swell Pro subscription at the end of the paid period (no refund for the current period; unlimited calls continue until then, then the free tier applies). Requires confirm: true. Run swell_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 100 tool calls / month |
| Pro | $9/mo · $90/yr | Unlimited |
Pro covers this Swell server only. Subscribe with swell_upgrade (it returns a Stripe Checkout link). Cancel any time with swell_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running swell_upgrade before then undoes the cancel. Or write to [email protected].
No. usefulapi is an independent service. It is not affiliated with or endorsed by Swell. The server calls the Swell API with your own Swell access, so it sees only the data that your account can see.
The login page asks for your Swell store id and Swell secret API key. See Before you connect for where to find them.
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Swell store id and Swell secret API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Swell API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Swell.
Yes, if you approve it. 3 of the 16 Swell tools can create or change data. The other 13 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 100 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls, for this Swell server only. Run swell_usage_status to see how many calls you used.
Ask the AI to run swell_upgrade: it returns a Stripe Checkout link. To cancel, run swell_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with swell_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.