io.usefulapi/gumroad

REMOTE · GUMROAD.USEFULAPI.IO · SCANNED AUG 3

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

Available components

69 69 Trust /100

Trust breakdown (6 categories)

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. How we score →

Endpoint Security78

The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
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. View diagnostics → Pass
HTTPS not yet verified: we couldn't determine whether a plaintext access path exists. View diagnostics → Unverified
HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial

Transport & Reachability100

Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass

Schema Quality & AI Usability71

AI-judged instruction clarity (good).Pass
Tool/resource definitions use about 1339 tokens (~66/item across 20 items; 20 tools + 0 resources), lean.Pass
Usage-examples check failed: none of the tools include examples. See how to fix → Fail

Stability & Change Management3

Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial

Tool Coverage100

100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
100% of tool parameters carry a description.Pass

Capabilities60

Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail

Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

remote · gumroad.usefulapi.io

Claude Codex opencode OpenClaw Hermes Other

# add to Claude Code

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

# ~/.codex/config.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
    }
  }
}

# add to OpenClaw

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

# ~/.hermes/config.yaml

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

// mcp.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 we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

3 Aug 26 +1
- Stability: unverified → 0.03 ▲ functional
2 Aug 26 +50
- Authorization: unverified → pass ▲ security
- Transport: fail → pass ▲ security
- First check of Authorization: partial security
- MCP protocol: unverified → fail ▼ functional
- 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 functional
1 Aug 26 18

First indexed and scored.

Show 1 earlier entry Hide earlier entries

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Probed https://gumroad.usefulapi.io/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject	Issuer	Valid from	Valid until	Key	Signature	Serial
CN=usefulapi.io	CN=WE1,O=Google Trust Services,C=US	1 Aug 2026	30 Oct 2026	ECDSA 256	ECDSA-SHA256	81c12489d2c9f50f132d4c4e2e52e382
SANs: usefulapi.io, gumroad.usefulapi.io, *.gumroad.usefulapi.io
CN=WE1,O=Google Trust Services,C=US (CA)	CN=GTS Root R4,O=Google Trust Services LLC,C=US	13 Dec 2023	20 Feb 2029	ECDSA 256	ECDSA-SHA384	7ff31977972c224a76155d13b6d685e3
CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA)	CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE	15 Nov 2023	28 Jan 2028	ECDSA 384	SHA256-RSA	7fe530bf331343bedd821610493d8a1b

DNSSEC insecure

Validation of gumroad.usefulapi.io. — Not signed

Zone	DS	Keys	Algorithms	Outcome
.	trust_anchor	20326, 38696	8, 8	Verified
io.	present	57355	8	Verified
usefulapi.io.	absent			Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation

Authentication Enforced and verified

The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.

Result	Enforced and verified
Enforced	On tool calls
HTTP status	200

WWW-Authenticate challenge Bearer realm="OAuth", resource_metadata="https://gumroad.usefulapi.io/.well-known/oauth-protected-resource/mcp", error="invalid_token", error_description="Missing or invalid access token"

Bearer realm="OAuth", resource_metadata="https://gumroad.usefulapi.io/.well-known/oauth-protected-resource/mcp", error="invalid_token", error_description="Missing or invalid access token"

Protected resource metadata

Document	https://gumroad.usefulapi.io/.well-known/oauth-protected-resource/mcp
Retrieved	Yes
Resource	https://gumroad.usefulapi.io/mcp
Authorisation server	https://gumroad.usefulapi.io

Transports 2 probes

Transport	URL	Outcome	Status	Location
streamable-http	https://gumroad.usefulapi.io/mcp	Verified	200
http (plaintext)	http://gumroad.usefulapi.io/mcp	Inconclusive	401

MCP tools — 20 exposed · ~1,339 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens

gumroad_create_offer_code Create offer code ~178

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

Input Output Examples

Name	Type	Req	Description
amount_off	integer	yes	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	yes	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	yes	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).

No output schema declared.

No examples provided.

gumroad_disable_license Disable license ~57

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

Input Output Examples

Name	Type	Req	Description
license_key	string	yes	The license key to disable.
product_id	string	yes	The product id the license belongs to.

No output schema declared.

No examples provided.

gumroad_disable_product Disable product ~51

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

Input Output Examples

Name	Type	Req	Description
id	string	yes	The product id to disable.

No output schema declared.

No examples provided.

gumroad_enable_license Enable license ~57

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

Input Output Examples

Name	Type	Req	Description
license_key	string	yes	The license key to enable.
product_id	string	yes	The product id the license belongs to.

No output schema declared.

No examples provided.

gumroad_enable_product Enable product ~48

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

Input Output Examples

Name	Type	Req	Description
id	string	yes	The product id to enable.

No output schema declared.

No examples provided.

gumroad_get_offer_code Get offer code ~62

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

Input Output Examples

Name	Type	Req	Description
id	string	yes	The offer code id.
product_id	string	yes	The product id.

No output schema declared.

No examples provided.

gumroad_get_product Get product ~39

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

Input Output Examples

Name	Type	Req	Description
id	string	yes	The product id.

No output schema declared.

No examples provided.

gumroad_get_sale Get sale ~40

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

Input Output Examples

Name	Type	Req	Description
id	string	yes	The sale id.

No output schema declared.

No examples provided.

gumroad_get_subscriber Get subscriber ~41

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

Input Output Examples

Name	Type	Req	Description
id	string	yes	The subscriber id.

No output schema declared.

No examples provided.

gumroad_get_user Get user ~33

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

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

gumroad_get_variant_category Get variant category ~62

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

Input Output Examples

Name	Type	Req	Description
id	string	yes	The variant category id.
product_id	string	yes	The product id.

No output schema declared.

No examples provided.

gumroad_list_custom_fields List custom fields ~51

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

Input Output Examples

Name	Type	Req	Description
product_id	string	yes	The product id.

No output schema declared.

No examples provided.

gumroad_list_offer_codes List offer codes ~48

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

Input Output Examples

Name	Type	Req	Description
product_id	string	yes	The product id.

No output schema declared.

No examples provided.

gumroad_list_products List products ~28

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

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

gumroad_list_resource_subscriptions List resource subscriptions ~58

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

Input Output Examples

Name	Type	Req	Description
resource_name	string	yes	The resource/event name whose webhook subscriptions to list.

No output schema declared.

No examples provided.

gumroad_list_sales List sales ~152

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 Output Examples

Name	Type	Req	Description
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.

No output schema declared.

No examples provided.

gumroad_list_subscribers List subscribers ~69

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

Input Output Examples

Name	Type	Req	Description
email	string	—	Filter to the subscriber with this buyer email.
product_id	string	yes	The membership product id.

No output schema declared.

No examples provided.

gumroad_list_variant_categories List variant categories ~48

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

Input Output Examples

Name	Type	Req	Description
product_id	string	yes	The product id.

No output schema declared.

No examples provided.

gumroad_update_offer_code Update offer code ~110

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 Output Examples

Name	Type	Req	Description
id	string	yes	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	yes	The product id the offer code belongs to.

No output schema declared.

No examples provided.

gumroad_verify_license Verify license ~107

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 Output Examples

Name	Type	Req	Description
increment_uses_count	boolean	—	Whether to increment the license's uses count (default false — pass true to record a use).
license_key	string	yes	The license key to verify.
product_id	string	yes	The product id the license belongs to.

No output schema declared.

No examples provided.

On this page

Handy links

Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

1 Aug 3 Aug