Example prompt:

"Show me all Gumroad sales from January 2025 for product prod_ABC123"

Key parameters:

• after -- ISO8601 date/time to filter sales after (e.g., 2025-01-01T00:00:00Z)
• before -- ISO8601 date/time to filter sales before
• email -- Filter by customer email address
• product_id -- Filter by specific product ID
• page -- Page number for paginated results (minimum 1)

3. Verify License Keys

Check if a license key is valid against a specific product, inspect usage count, or verify membership entitlement.

Tool: GUMROAD_VERIFY_LICENSE

Example prompt:

"Verify license key ABCD-EFGH-IJKL-MNOP for product prod_ABC123"

Key parameters (all required):

• product_id -- The product ID to verify against (required for products created on/after Jan 9, 2023)
• license_key -- The license key string (e.g., ABCD-EFGH-IJKL-MNOP)
• increment_uses_count -- Whether to increment usage count (defaults to true)

4. Subscribe to Webhook Events

Set up real-time event notifications by subscribing your endpoint URL to specific Gumroad resource events.

Tool: GUMROAD_SUBSCRIBE_TO_RESOURCE

Example prompt:

"Subscribe my webhook https://example.com/hook to Gumroad sale events"

Key parameters (all required):

• resource_name -- One of: sale, refund, dispute, dispute_won, cancellation, subscription_updated, subscription_ended, subscription_restarted
• post_url -- Your endpoint URL that receives HTTP POST notifications

5. List Active Webhook Subscriptions

Review existing webhook subscriptions for a given resource type before adding new ones to avoid duplicates.

Tool: GUMROAD_GET_RESOURCE_SUBSCRIPTIONS

Example prompt:

"Show all my active Gumroad webhook subscriptions for sale events"

Key parameters (required):

• resource_name -- One of the eight supported event types (e.g., sale, refund)

Known Pitfalls

• Product ID required for license verification: Products created on or after January 9, 2023 require the product_id parameter. Older products may work without it but providing it is recommended.
• Pagination on sales: Sales results are paginated. Always check if more pages exist by incrementing the page parameter.
• Webhook deduplication: Before subscribing to a resource, use GUMROAD_GET_RESOURCE_SUBSCRIPTIONS to check for existing subscriptions and avoid duplicate webhooks.
• ISO8601 date format: Date filters on sales must use ISO8601 format (e.g., 2025-01-01T00:00:00Z), not plain dates.

Quick Reference

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