Spree Commerce developer docs for AI agents
Spree Commerce docs for AI coding agents: build headless B2B and marketplace ecommerce on its APIs.
Products, customers, orders, subscriptions, benefits, revenue metrics and refunds.
Pick the AI app you use, then copy the settings.
Passed 4/4 checks · What you ask goes through the maker’s server (polar-sh.usefulapi.io)
First: which AI do you use?
Pick your app and the steps appear below.
Works with Claude · about 2 min
No key, nothing to install · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1 · on Team/Enterprise an Owner adds it
CustomizeConnectors
Copy each value into the field with the same name in Claude, then click Continue
Polar MCP by usefulapihttps://polar-sh.usefulapi.io/mcpLeave Authentication as Claude detected it, then click Add
+ConnectorsPolar MCP by usefulapi
Use Polar MCP by usefulapi and tell me what you can do for me, then show me one thing✓ If Claude says it is using Polar MCP by usefulapi or shows a Polar MCP by usefulapi tool in the answer, you are connected
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with ChatGPT on business plans only
ChatGPT Business, Enterprise or Edu on the web, added by a workspace admin or owner · On Free, Plus or Pro: your ChatGPT plan cannot connect MCP yet
Plugins+Add custom MCP server
Enter a name, paste the address under Connection, tick the risk warning and click Create as a plugin
Polar MCP by usefulapihttps://polar-sh.usefulapi.io/mcpStart a new chat and pick Polar MCP by usefulapi from your plugins before typing
Use Polar MCP by usefulapi and tell me what you can do for me, then show me one thing✓ If ChatGPT says it is using Polar MCP by usefulapi or shows a Polar MCP by usefulapi tool in the answer, you are connected
Menu names checked against OpenAI’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with Claude Code · about 2 min
No key, nothing to install
Mac: press Command+Space and type Terminal · Windows: open PowerShell
claude mcp add --transport http --scope user polar-sh https://polar-sh.usefulapi.io/mcpYou should see Polar MCP by usefulapi listed as connected
Use Polar MCP by usefulapi and tell me what you can do for me, then show me one thing✓ If Claude Code says it is using Polar MCP by usefulapi or shows a Polar MCP by usefulapi tool in the answer, you are connected
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with Cursor · about 2 min
No key, nothing to install
Use Polar MCP by usefulapi and tell me what you can do for me, then show me one thing✓ If Cursor says it is using Polar MCP by usefulapi or shows a Polar MCP by usefulapi tool in the answer, you are connected
Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with VS Code · about 2 min
No key, nothing to install
Use Polar MCP by usefulapi and tell me what you can do for me, then show me one thing✓ If VS Code says it is using Polar MCP by usefulapi or shows a Polar MCP by usefulapi tool in the answer, you are connected
Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.
Address for apps that connect over the web
https://polar-sh.usefulapi.io/mcpJSON settings are under “For developers” below
Claude Code
claude mcp add --transport http --scope user polar-sh https://polar-sh.usefulapi.io/mcpCursor (~/.cursor/mcp.json)
{
"mcpServers": {
"polar-sh": {
"url": "https://polar-sh.usefulapi.io/mcp"
}
}
}VS Code (mcp.json)
{
"servers": {
"polar-sh": {
"type": "http",
"url": "https://polar-sh.usefulapi.io/mcp"
}
}
}These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.
Connect over the internet in
ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast
Tool names and descriptions exactly as the server reported them on Nov 9, 2026. The maker wrote them, not us; we show them as plain text.
polar_list_organizationsList the organisations the token can act for. Start here — most other tools take an organization_id. Polar: GET /v1/organizations/.
polar_list_productsList products, optionally filtered by archived state, recurrence or a text query. Polar: GET /v1/products/.
polar_get_productFetch a single product with its prices and attached benefits. Polar: GET /v1/products/{id}.
polar_list_customersList customers, optionally by email or a text query. Polar: GET /v1/customers/.
polar_get_customerFetch a single customer by Polar id. Polar: GET /v1/customers/{id}.
polar_get_customer_stateFetch everything about one customer in a single call — active subscriptions, granted benefits and entitlements. The best answer to 'what does this customer currently have?'. Polar: GET /v1/customers/{id}/state.
polar_get_customer_state_by_external_idSame as polar_get_customer_state, but looked up by YOUR external id rather than Polar's — the usual path when you hold your own user id. Polar: GET /v1/customers/external/{external_id}/state.
polar_list_ordersList orders, filtered by customer, product, subscription, status or a date window. Polar: GET /v1/orders/.
polar_get_orderFetch a single order with its line items, discount and tax. Polar: GET /v1/orders/{id}.
polar_list_subscriptionsList subscriptions, filtered by customer, product, status, active state or cancellation window. Polar: GET /v1/subscriptions/.
polar_get_subscriptionFetch a single subscription with its product, price and period. Polar: GET /v1/subscriptions/{id}.
polar_get_metricsFetch revenue and subscription metrics over a date range, bucketed by interval — orders, revenue, MRR, active subscriptions. Polar: GET /v1/metrics/.
polar_list_benefitsList benefits — the things a product grants, such as licence keys, file downloads or Discord roles. Polar: GET /v1/benefits/.
polar_list_benefit_grantsList who has been granted one benefit, and whether the grant is still active. Polar: GET /v1/benefits/{id}/grants.
polar_list_discountsList discount codes and their redemption limits. Polar: GET /v1/discounts/.
polar_list_refundsList refunds, filtered by order, subscription, customer or success. Polar: GET /v1/refunds/.
polar_list_license_keysList issued licence keys and their status. Polar: GET /v1/license-keys/.
polar_list_metersList the usage meters that aggregate events into billable quantities. Polar: GET /v1/meters/.
polar_get_meter_quantitiesFetch the aggregated quantities a meter has recorded over a window — what usage-based billing will charge for. Polar: GET /v1/meters/{id}/quantities.
polar_list_eventsList the raw usage events ingested for metering, filtered by customer, meter, name or time. Polar: GET /v1/events/.
polar_list_webhook_deliveriesList webhook delivery attempts with their HTTP results — the tool for 'why did my webhook not arrive?'. Polar: GET /v1/webhooks/deliveries.
polar_list_webhook_endpointsList the configured webhook endpoints and their subscribed events. Polar: GET /v1/webhooks/endpoints.
polar_redeliver_webhook_eventQueue one webhook event for redelivery after your endpoint recovered. Polar: POST /v1/webhooks/events/{id}/redeliver.
polar_create_refundRefund an order, in full or in part. This moves real money back to the customer. Polar: POST /v1/refunds/.
polar_cancel_subscriptionCancel a subscription at the end of its current period. The customer keeps access until then. Polar: PATCH /v1/subscriptions/{id}.
polar_create_checkout_linkCreate a reusable checkout URL for one or more products — the link you put in a page or an email. Polar: POST /v1/checkout-links/.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 12, 2026
The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)
Code last changed yesterday
We have not read this repo from GitHub yet
No sign-in needed
Read 26 tool descriptions and found no hidden instructions to the AI
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Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 4 of 4 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed yesterday, and the latest version (1.38.0) reached the registry today.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT Business and above.
In the same category: Spree Commerce developer docs for AI agents, Stripe MCP, Sessy — Amazon SES observability
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Spree Commerce docs for AI coding agents: build headless B2B and marketplace ecommerce on its APIs.
Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.
Read-only Amazon SES observability: search events, inspect bounces, pull delivery stats.
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Products, customers, orders, subscriptions, benefits, revenue metrics and refunds. Hosted, no local install.
Live endpoint: https://polar-sh.usefulapi.io/mcp · Homepage: https://usefulapi.io
https://polar-sh.usefulapi.io/mcp.claude mcp add --transport http polar-sh https://polar-sh.usefulapi.io/mcp, then run /mcp to log in.{
"mcpServers": { "polar-sh": { "url": "https://polar-sh.usefulapi.io/mcp" } } }
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, and the login page asks for your Polar credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/polar-sh/
On first connect you'll paste your Polar credentials. They are validated, stored per-user, and scoped to you — no keys in config files.
| Tool | Type | What it does |
|---|---|---|
polar_list_organizations | read | List organisations |
polar_list_products | read | List products |
polar_get_product | read | Get one product |
polar_list_customers | read | List customers |
polar_get_customer | read | Get one customer |
polar_get_customer_state | read | Get a customer's full state |
polar_get_customer_state_by_external_id | read | Get a customer's state by your own id |
polar_list_orders | read | List orders |
polar_get_order | read | Get one order |
polar_list_subscriptions | read | List subscriptions |
polar_get_subscription | read | Get one subscription |
polar_get_metrics | read | Get revenue metrics |
polar_list_benefits | read | List benefits |
polar_list_benefit_grants | read | List grants of a benefit |
polar_list_discounts | read | List discounts |
polar_list_refunds | read | List refunds |
polar_list_license_keys | read | List licence keys |
polar_list_meters | read | List usage meters |
polar_get_meter_quantities | read | Get a meter's quantities |
polar_list_events | read | List usage events |
polar_list_webhook_deliveries | read | List webhook deliveries |
polar_list_webhook_endpoints | read | List webhook endpoints |
polar_redeliver_webhook_event | write | Redeliver a webhook event |
polar_create_refund | write | Refund an order |
polar_cancel_subscription | write | Cancel a subscription |
polar_create_checkout_link | write | Create a checkout link |
polar_sh_usage_status | meta | Usage status (free-tier meter) |
polar_sh_request_feature | meta | Request a missing feature |
polar_sh_upgrade | meta | Upgrade to Pro or Pro+ |
polar_sh_cancel_subscription | meta | Cancel the Pro subscription |
read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Pro | $9/mo or $90/yr (2 months free) | Unlimited* |
\*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to support@usefulapi.io.
Pro covers this server only. Subscribe with polar_sh_upgrade (it returns a Stripe Checkout link). Cancel any time with polar_sh_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running polar_sh_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
MIT