Lemon Squeezy MCP connector for Power Platform

February 17, 2026

I looked at Stripe first. Great API, well-documented, but I didn’t want to deal with sales tax compliance myself—calculating rates, filing returns, handling exemptions across jurisdictions. Lemon Squeezy is a merchant of record, which means they handle all of that. They collect payment, calculate and remit taxes, and send you the net amount. For digital products—software, courses, ebooks, memberships—it’s one less thing to manage.

This connector wraps 35+ operations across the Lemon Squeezy API into a Power Platform custom connector with MCP tools for Copilot Studio agents and Application Insights telemetry.

You can find the complete code in my SharingIsCaring repository.

What’s included

Account (1 operation)

Get the authenticated user account. Useful for verifying API key validity and retrieving account details.

Stores (2 operations)

List all stores the authenticated user has access to and get details for a specific store. Most filtering operations use store ID as a parameter.

Products (4 operations)

Customers (4 operations)

List, get, create, and update customers. Filter by store or email when listing. Customer records link to orders and subscriptions.

Orders (5 operations)

Subscriptions (6 operations)

Full subscription lifecycle: list, get, update, cancel, and retrieve invoices. The Update Subscription operation handles upgrades, downgrades, pausing, and resuming.

License Keys (3 operations)

List, get, and update license keys. Update lets you change activation limits, expiration dates, or disable keys entirely. Useful for managing software licenses from Power Automate.

Discounts (4 operations)

Create, list, get, and delete discount codes. Supports percentage and fixed-amount discounts with optional usage limits and expiration dates.

Webhooks (5 operations)

Manage webhook subscriptions programmatically. Create webhooks for events like order_created, subscription_cancelled, or license_key_updated without logging into the Lemon Squeezy dashboard.

MCP tools for Copilot Studio

The connector exposes 22 MCP tools via JSON-RPC 2.0:

Add the connector as an action in Copilot Studio, and the agent discovers the tools automatically:

User: “Show me all active subscriptions for my SaaS product” Agent: Calls list_subscriptions with status filter

User: “Create a 25% off discount code LAUNCH25 for the next 30 days” Agent: Calls create_discount with the parameters

User: “How many license keys have been activated for ProductX?” Agent: Calls list_license_keys filtered by product

Setup

Get your API key

1. Log in to your Lemon Squeezy dashboard.
2. Navigate to Settings → API.
3. Click Create API Key.
4. Copy the key immediately—it won’t be shown again.

Import the connector

1. Go to Power Automate or Power Apps → Custom connectors.
2. Import from OpenAPI file: upload apiDefinition.swagger.json.
3. Create a connection and enter your API key when prompted.

Or use PAC CLI:

pac connector create --api-definition apiDefinition.swagger.json --api-properties apiProperties.json

Status values reference

Subscription status

Order status

License key status

Examples

List active subscriptions

In Power Automate, use the List Subscriptions action with:

• Status: active
• Store ID: Your store ID (optional)

Create a discount code

Use the Create Discount action:

• Name: Internal reference (for example, “Launch Promo”)
• Code: What customers enter (for example, SAVE20)
• Amount: Discount value (20 for 20% or 2000 for $20.00)
• Amount Type: percent or fixed
• Store ID: Your store ID

Pause a subscription

Call Update Subscription with:

• Subscription ID: The subscription to pause
• Pause: true

API notes

• Rate limit: 300 requests per minute
• Response format: JSON:API specification with data, attributes, and relationships structure
• Pagination: Use page[number] and page[size] parameters
• Filtering: Most list endpoints support filter[field] parameters
• Test mode: Products and orders created in test mode have test_mode: true

Webhook events

Common events you can subscribe to:

• order_created, order_refunded
• subscription_created, subscription_updated, subscription_cancelled, subscription_resumed, subscription_expired, subscription_paused, subscription_unpaused
• subscription_payment_success, subscription_payment_failed, subscription_payment_recovered, subscription_payment_refunded
• license_key_created, license_key_updated

Application Insights (optional)

Update the connection string in script.csx:

private const string APP_INSIGHTS_CONNECTION_STRING = "InstrumentationKey=xxx;IngestionEndpoint=https://xxx.in.applicationinsights.azure.com/";

Events logged: RequestReceived, RequestCompleted, RequestError, MCPRequest, MCPToolCall, MCPToolError.

Sample KQL query:

customEvents
| where name startswith "Lemon"
| extend CorrelationId = tostring(customDimensions.CorrelationId)
| extend Tool = tostring(customDimensions.Tool)
| summarize count() by Tool, bin(timestamp, 1h)
| render timechart

Try it yourself

The complete connector code is available in my SharingIsCaring repository:

• apiDefinition.swagger.json — OpenAPI specification
• script.csx — Connector script with MCP tools
• apiProperties.json — Connector metadata
• readme.md — Full documentation

Resources

• Lemon Squeezy API documentation
• Lemon Squeezy developer guide
• JSON:API specification
• Application Insights telemetry for connectors