# io.usefulapi/gumroad (remote · gumroad.usefulapi.io)

Read products, sales, subscribers and offer codes; verify, enable and disable product licenses.

- Trust score: 69/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `gumroad.usefulapi.io`: 69/100 (this document), [markdown](https://verifymcp.io/servers/io-usefulapi-gumroad/gumroad.md), [page](https://verifymcp.io/servers/io-usefulapi-gumroad/gumroad)

## Channel facts

- Endpoint: `https://gumroad.usefulapi.io/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 78/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token.
  - HTTPS not yet verified: we couldn't determine whether a plaintext access path exists.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
  - The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 1339 tokens (~66/item across 20 items; 20 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http io-usefulapi-gumroad https://gumroad.usefulapi.io/mcp
```

### Codex

```toml
[mcp_servers.io-usefulapi-gumroad]
url = "https://gumroad.usefulapi.io/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-usefulapi-gumroad": {
      "type": "remote",
      "url": "https://gumroad.usefulapi.io/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add io-usefulapi-gumroad --url https://gumroad.usefulapi.io/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  io-usefulapi-gumroad:
    url: "https://gumroad.usefulapi.io/mcp"
```

### Other

```json
{
  "mcpServers": {
    "io-usefulapi-gumroad": {
      "type": "http",
      "url": "https://gumroad.usefulapi.io/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 69, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-08-02 (score 68, +50)

- [security improvement] Authorization: unverified → pass
- [security improvement] Transport: fail → pass
- [security] First check of Authorization: partial
- [functional regression] MCP protocol: unverified → fail
- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Schema quality: pass
- [functional] First check of Schema quality: good
- [functional] First check of Tool coverage: 100
- [functional] First check of Schema quality: fail

### 2026-08-01 (score 18)

First indexed and scored.

## MCP tools (20)

### `gumroad_get_user` (~33 tokens)

Get user

Get the authenticated user associated with the current Gumroad access token. Gumroad REST: GET /v2/user.

### `gumroad_list_products` (~28 tokens)

List products

List all of the authenticated user's products. Gumroad REST: GET /v2/products.

### `gumroad_get_product` (~39 tokens)

Get product

Get a single product by id. Gumroad REST: GET /v2/products/{id}.

Input parameters:

- `id` (string, required): The product id.

### `gumroad_list_sales` (~152 tokens)

List sales

List/filter the authenticated user's successful sales, most recent first. Supports date, email, product/order filters and cursor pagination via page_key. Gumroad REST: GET /v2/sales.

Input parameters:

- `after` (string): Only sales after this date, formatted YYYY-MM-DD.
- `before` (string): Only sales before this date, formatted YYYY-MM-DD.
- `email` (string): Filter to sales to this buyer email.
- `order_id` (string): Filter to a specific order id.
- `page_key` (string): Pagination cursor — pass the value from a previous response's next_page_key to fetch the next page.
- `product_id` (string): Filter to sales of this product id.

### `gumroad_get_sale` (~40 tokens)

Get sale

Get a single sale by id. Gumroad REST: GET /v2/sales/{id}.

Input parameters:

- `id` (string, required): The sale id.

### `gumroad_list_subscribers` (~69 tokens)

List subscribers

List a membership/subscription product's subscribers, optionally filtered by buyer email. Gumroad REST: GET /v2/products/{product_id}/subscribers.

Input parameters:

- `email` (string): Filter to the subscriber with this buyer email.
- `product_id` (string, required): The membership product id.

### `gumroad_get_subscriber` (~41 tokens)

Get subscriber

Get a single subscriber by id. Gumroad REST: GET /v2/subscribers/{id}.

Input parameters:

- `id` (string, required): The subscriber id.

### `gumroad_list_offer_codes` (~48 tokens)

List offer codes

List a product's offer codes (discount codes). Gumroad REST: GET /v2/products/{product_id}/offer_codes.

Input parameters:

- `product_id` (string, required): The product id.

### `gumroad_get_offer_code` (~62 tokens)

Get offer code

Get a single offer code on a product by id. Gumroad REST: GET /v2/products/{product_id}/offer_codes/{id}.

Input parameters:

- `id` (string, required): The offer code id.
- `product_id` (string, required): The product id.

### `gumroad_list_variant_categories` (~48 tokens)

List variant categories

List a product's variant categories (option groups). Gumroad REST: GET /v2/products/{product_id}/variant_categories.

Input parameters:

- `product_id` (string, required): The product id.

### `gumroad_get_variant_category` (~62 tokens)

Get variant category

Get a single variant category on a product by id. Gumroad REST: GET /v2/products/{product_id}/variant_categories/{id}.

Input parameters:

- `id` (string, required): The variant category id.
- `product_id` (string, required): The product id.

### `gumroad_list_custom_fields` (~51 tokens)

List custom fields

List a product's custom fields (extra fields collected at checkout). Gumroad REST: GET /v2/products/{product_id}/custom_fields.

Input parameters:

- `product_id` (string, required): The product id.

### `gumroad_list_resource_subscriptions` (~58 tokens)

List resource subscriptions

List the authenticated user's resource subscriptions (webhooks) for a given resource/event name. Gumroad REST: GET /v2/resource_subscriptions.

Input parameters:

- `resource_name` (string, required): The resource/event name whose webhook subscriptions to list.

### `gumroad_verify_license` (~107 tokens)

Verify license

Verify a license key for a product (checks validity and returns purchase details). By default this does NOT increment the uses count (no side effect). Gumroad REST: POST /v2/licenses/verify.

Input parameters:

- `increment_uses_count` (boolean): Whether to increment the license's uses count (default false — pass true to record a use).
- `license_key` (string, required): The license key to verify.
- `product_id` (string, required): The product id the license belongs to.

### `gumroad_enable_product` (~48 tokens)

Enable product

Enable (publish) a product so it can be sold. Gumroad REST: PUT /v2/products/{id}/enable.

Input parameters:

- `id` (string, required): The product id to enable.

### `gumroad_disable_product` (~51 tokens)

Disable product

Disable (unpublish) a product so it can no longer be sold. Gumroad REST: PUT /v2/products/{id}/disable.

Input parameters:

- `id` (string, required): The product id to disable.

### `gumroad_create_offer_code` (~178 tokens)

Create offer code

Create a new offer code (discount code) on a product. Gumroad REST: POST /v2/products/{product_id}/offer_codes.

Input parameters:

- `amount_off` (integer, required): The amount off — in cents when offer_type is 'cents', or a percentage when 'percent'.
- `max_purchase_count` (integer): Optional cap on how many times the offer code can be used.
- `name` (string, required): The discount code text buyers enter (e.g. LAUNCH20).
- `offer_type` (string): Whether amount_off is a fixed amount in 'cents' or a 'percent' discount (default 'cents').
- `product_id` (string, required): The product id to create the offer code on.
- `universal` (boolean): Whether the offer code applies to all of the user's products (default false).

### `gumroad_update_offer_code` (~110 tokens)

Update offer code

Update an existing offer code on a product (its code text and/or its max purchase count). Gumroad REST: PUT /v2/products/{product_id}/offer_codes/{id}.

Input parameters:

- `id` (string, required): The offer code id to update.
- `max_purchase_count` (integer): New cap on how many times the offer code can be used.
- `offer_code` (string): New discount code text.
- `product_id` (string, required): The product id the offer code belongs to.

### `gumroad_enable_license` (~57 tokens)

Enable license

Enable a product's license key. Gumroad REST: PUT /v2/licenses/enable.

Input parameters:

- `license_key` (string, required): The license key to enable.
- `product_id` (string, required): The product id the license belongs to.

### `gumroad_disable_license` (~57 tokens)

Disable license

Disable a product's license key. Gumroad REST: PUT /v2/licenses/disable.

Input parameters:

- `license_key` (string, required): The license key to disable.
- `product_id` (string, required): The product id the license belongs to.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/io-usefulapi-gumroad/gumroad#diagnostics

## Score history

- 2026-08-03: 69
- 2026-08-02: 68
- 2026-08-01: 18

## Links

- Remote endpoint: https://gumroad.usefulapi.io/mcp
- Repository: https://github.com/m190/usefulapi-mcp
- Changelog RSS feed: https://verifymcp.io/servers/io-usefulapi-gumroad/gumroad/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/io-usefulapi-gumroad/gumroad/changelog.json
- HTML version of this page: https://verifymcp.io/servers/io-usefulapi-gumroad/gumroad