Gumroad

Gumroad

Access the Gumroad API with managed OAuth authentication. Manage products, view sales, verify licenses, and set up webhooks for your digital storefront.

Quick Start

Get current user info
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/gumroad/v2/user')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://gateway.maton.ai/gumroad/v2/{resource}

The gateway proxies requests to api.gumroad.com/v2 and automatically injects your OAuth token.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

export MATON_API_KEY="YOUR_API_KEY"

Getting Your API Key

1. Sign in or create an account at [maton.ai](https://maton.ai)

2. Go to [maton.ai/settings](https://maton.ai/settings)

3. Copy your API key

Connection Management

Manage your Gumroad OAuth connections at https://ctrl.maton.ai.

List Connections

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections?app=gumroad&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Create Connection

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'gumroad'}).encode()
req = urllib.request.Request('https://ctrl.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Get Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "connection": {
    "connection_id": "e1a4444f-2bb8-4e09-9265-3afe71b74b1f",
    "status": "ACTIVE",
    "creation_time": "2026-02-08T06:22:48.654579Z",
    "last_updated_time": "2026-02-08T06:23:07.420381Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "gumroad",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Specifying Connection

If you have multiple Gumroad connections, specify which one to use with the Maton-Connection header:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/gumroad/v2/products')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', 'e1a4444f-2bb8-4e09-9265-3afe71b74b1f')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If omitted, the gateway uses the default (oldest) active connection.

API Reference

User Info

#### Get Current User

GET /gumroad/v2/user

Response:

{
  "success": true,
  "user": {
    "name": "Chris",
    "currency_type": "usd",
    "bio": null,
    "twitter_handle": null,
    "id": "1690942847664",
    "user_id": "QmTtTnViFSoocHAexgLuJw==",
    "url": "https://chriswave1246.gumroad.com",
    "profile_url": "https://public-files.gumroad.com/...",
    "email": "chris@example.com",
    "display_name": "Chris"
  }
}

Product Operations

#### List Products

GET /gumroad/v2/products

Response:

{
  "success": true,
  "products": [
    {
      "id": "ABC123",
      "name": "My Product",
      "price": 500,
      "currency": "usd",
      "short_url": "https://gumroad.com/l/abc",
      "sales_count": 10,
      "sales_usd_cents": 5000
    }
  ]
}

#### Get Product

GET /gumroad/v2/products/{product_id}

#### Update Product

PUT /gumroad/v2/products/{product_id}
Content-Type: application/x-www-form-urlencoded

name=Updated%20Name&price=1000

#### Enable/Disable Product

PUT /gumroad/v2/products/{product_id}/disable
Content-Type: application/x-www-form-urlencoded

disabled=true

#### Delete Product

DELETE /gumroad/v2/products/{product_id}

Note: Creating new products via API is not supported. Products must be created through the Gumroad website.

Offer Code Operations

#### List Offer Codes

GET /gumroad/v2/products/{product_id}/offer_codes

#### Get Offer Code

GET /gumroad/v2/products/{product_id}/offer_codes/{offer_code_id}

#### Create Offer Code

POST /gumroad/v2/products/{product_id}/offer_codes
Content-Type: application/x-www-form-urlencoded

name=SUMMER20&amount_off=20

Parameters:

• -name - The code customers enter (required)
• -amount_off - Cents or percentage off (required)
• -offer_type - "cents" or "percent" (default: "cents")
• -max_purchase_count - Maximum uses (optional)

#### Update Offer Code

PUT /gumroad/v2/products/{product_id}/offer_codes/{offer_code_id}
Content-Type: application/x-www-form-urlencoded

max_purchase_count=100

#### Delete Offer Code

DELETE /gumroad/v2/products/{product_id}/offer_codes/{offer_code_id}

Sales Operations

#### List Sales

GET /gumroad/v2/sales

Query parameters:

• -after - Only sales after this date (YYYY-MM-DD)
• -before - Only sales before this date (YYYY-MM-DD)
• -page - Page number for pagination

Example with filters:

GET /gumroad/v2/sales?after=2026-01-01&before=2026-12-31

Response:

{
  "success": true,
  "sales": [
    {
      "id": "sale_abc123",
      "email": "customer@example.com",
      "seller_id": "seller123",
      "product_id": "prod123",
      "product_name": "My Product",
      "price": 500,
      "currency_symbol": "$",
      "created_at": "2026-01-15T10:30:00Z"
    }
  ]
}

#### Get Sale

GET /gumroad/v2/sales/{sale_id}

Subscriber Operations

#### List Subscribers

GET /gumroad/v2/products/{product_id}/subscribers

#### Get Subscriber

GET /gumroad/v2/subscribers/{subscriber_id}

Response:

{
  "success": true,
  "subscriber": {
    "id": "sub123",
    "product_id": "prod123",
    "product_name": "Monthly Subscription",
    "user_id": "user123",
    "user_email": "subscriber@example.com",
    "status": "alive",
    "created_at": "2026-01-01T00:00:00Z"
  }
}

License Operations

#### Verify License

POST /gumroad/v2/licenses/verify
Content-Type: application/x-www-form-urlencoded

product_id={product_id}&license_key={license_key}

Parameters:

• -product_id - The product ID (required)
• -license_key - The license key to verify (required)
• -increment_uses_count - Increment the use count (default: true)

Response (success):

{
  "success": true,
  "uses": 1,
  "purchase": {
    "seller_id": "seller123",
    "product_id": "prod123",
    "product_name": "My Product",
    "permalink": "abc",
    "email": "customer@example.com",
    "license_key": "ABC-123-DEF",
    "quantity": 1,
    "created_at": "2026-01-15T00:00:00Z"
  }
}

Response (failure):

{
  "success": false,
  "message": "That license does not exist for the provided product."
}

#### Enable License

PUT /gumroad/v2/licenses/enable
Content-Type: application/x-www-form-urlencoded

product_id={product_id}&license_key={license_key}

#### Disable License

PUT /gumroad/v2/licenses/disable
Content-Type: application/x-www-form-urlencoded

product_id={product_id}&license_key={license_key}

#### Decrement License Uses

PUT /gumroad/v2/licenses/decrement_uses_count
Content-Type: application/x-www-form-urlencoded

product_id={product_id}&license_key={license_key}

Resource Subscriptions (Webhooks)

Subscribe to notifications for sales and other events.

#### List Resource Subscriptions

GET /gumroad/v2/resource_subscriptions?resource_name=sale

Parameters:

• -resource_name - Required. One of: sale, refund, dispute, dispute_won, cancellation, subscription_updated, subscription_ended, subscription_restarted

Response:

{
  "success": true,
  "resource_subscriptions": [
    {
      "id": "wX43hzi-s7W4JfYFkxyeiQ==",
      "resource_name": "sale",
      "post_url": "https://example.com/webhook"
    }
  ]
}

#### Delete Resource Subscription

DELETE /gumroad/v2/resource_subscriptions/{resource_subscription_id}

Response:

{
  "success": true,
  "message": "The resource_subscription was deleted successfully."
}

Variant Categories

#### List Variant Categories

GET /gumroad/v2/products/{product_id}/variant_categories

#### Get Variant Category

GET /gumroad/v2/products/{product_id}/variant_categories/{variant_category_id}

#### Create Variant Category

POST /gumroad/v2/products/{product_id}/variant_categories
Content-Type: application/x-www-form-urlencoded

title=Size

#### Delete Variant Category

DELETE /gumroad/v2/products/{product_id}/variant_categories/{variant_category_id}

Variants

#### List Variants

GET /gumroad/v2/products/{product_id}/variant_categories/{variant_category_id}/variants

#### Create Variant

POST /gumroad/v2/products/{product_id}/variant_categories/{variant_category_id}/variants
Content-Type: application/x-www-form-urlencoded

name=Large&price_difference=200

#### Update Variant

PUT /gumroad/v2/products/{product_id}/variant_categories/{variant_category_id}/variants/{variant_id}
Content-Type: application/x-www-form-urlencoded

name=Extra%20Large

#### Delete Variant

DELETE /gumroad/v2/products/{product_id}/variant_categories/{variant_category_id}/variants/{variant_id}

Custom Fields

#### List Custom Fields

GET /gumroad/v2/products/{product_id}/custom_fields

#### Create Custom Field

POST /gumroad/v2/products/{product_id}/custom_fields
Content-Type: application/x-www-form-urlencoded

name=Company%20Name&required=true

#### Update Custom Field

PUT /gumroad/v2/products/{product_id}/custom_fields/{name}
Content-Type: application/x-www-form-urlencoded

required=false

#### Delete Custom Field

DELETE /gumroad/v2/products/{product_id}/custom_fields/{name}

Pagination

Gumroad uses page-based pagination for endpoints that return lists:

GET /gumroad/v2/sales?page=1
GET /gumroad/v2/sales?page=2

Continue incrementing the page number until you receive an empty list.

Code Examples

JavaScript

const response = await fetch(
  'https://gateway.maton.ai/gumroad/v2/products',
  {
    headers: {
      'Authorization': Bearer ${process.env.MATON_API_KEY}
    }
  }
);
const data = await response.json();

Python

import os
import requests

response = requests.get(
    'https://gateway.maton.ai/gumroad/v2/products',
    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'}
)
data = response.json()

Python (Verify License)

import os
import requests

response = requests.post(
    'https://gateway.maton.ai/gumroad/v2/licenses/verify',
    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'},
    data={
        'product_id': 'your_product_id',
        'license_key': 'CUSTOMER-LICENSE-KEY'
    }
)
result = response.json()
if result['success']:
    print(f"License valid! Uses: {result['uses']}")
else:
    print(f"Invalid: {result['message']}")

Notes

• -All responses include a success boolean field
• -Product creation is not available via API - products must be created through the Gumroad website
• -POST/PUT requests use application/x-www-form-urlencoded content type (not JSON)
• -Prices are in cents (e.g., 500 = $5.00)
• -License keys are case-insensitive
• -Resource subscription webhooks send POST requests to your specified URL
• -IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments

Error Handling

| Status | Meaning |

|--------|---------|

| 400 | Missing Gumroad connection or bad request |

| 401 | Invalid or missing Maton API key |

| 404 | Resource not found (returned with success: false) |

| 429 | Rate limited |

| 4xx/5xx | Passthrough error from Gumroad API |

Gumroad errors typically return HTTP 404 with a JSON body:

{
  "success": false,
  "message": "Error description"
}

Troubleshooting: API Key Issues

1. Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

2. Verify the API key is valid by listing connections:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Troubleshooting: Invalid App Name

1. Ensure your URL path starts with gumroad. For example:

• -Correct: https://gateway.maton.ai/gumroad/v2/user
• -Incorrect: https://gateway.maton.ai/v2/user

Resources

• -[Gumroad API Overview](https://gumroad.com/api)
• -[Create API Application](https://help.gumroad.com/article/280-create-application-api)
• -[License Keys Help](https://help.gumroad.com/article/76-license-keys)
• -[Maton Community](https://discord.com/invite/dBfFAcefs2)
• -[Maton Support](mailto:support@maton.ai)