Gumroad MCP by usefulapi
REMOTE · GUMROAD.USEFULAPI.IO
Read products, sales, subscribers and offer codes; verify, enable and disable product licenses.
Available components
Last scanned (7 hours ago)
Scores higher than 4% of remote servers
Reachable. Last reached 5 Nov 2026.
Category E-commerce
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 → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven. 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
Transport & Reachability0
- Transport check failed: declared streamable-http, but the endpoint redirected instead of responding directly. See how to fix → View diagnostics → Fail
Schema Quality & AI Usability0
- Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.Unverified
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage0
- Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Tool Safety0
- Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Capabilities0
- Capabilities not yet verified: we couldn't read the endpoint's capabilities.Unverified
Unverified: 5 categories
Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.
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.
- 2 Nov 26 −62
- Endpoint reachability: reachable → not serving MCP ▼ security
- Stability: pass → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Authorization: pass → unverified ▼ security
- Schema quality: 100 → unverified ▼ functional
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- 31 Oct 26 +3
- Authorization: partial → pass ▲ security
- MCP protocol: fail → pass ▲ functional
- New prompt “check_a_license_key_or_record_a_use” functional
- New prompt “create_or_change_an_offer_code” functional
- New prompt “look_up_sales_by_date_product_or_buyer_email” functional
- New prompt “publish_or_unpublish_products_enable_or_disable_licenses” functional
- New prompt “review_the_subscribers_of_a_membership_product” functional
- MCP protocol version: 2025-06-18 → 2025-11-25 functional
- Server version: 1.31.0 → 1.33.0 functional
- Server version: 1.30.0 → 1.31.0 functional
- Server version: 1.29.2 → 1.30.0 functional
- 30 Oct 26 0
- Server version: 1.29.1 → 1.29.2 functional
- Server version: 1.29.0 → 1.29.1 functional
- 29 Oct 26 0
- Server version: 1.28.0 → 1.29.0 functional
- Server version: 1.27.0 → 1.28.0 functional
- 28 Oct 26 0
- Server version: 1.25.0 → 1.27.0 functional
- 27 Oct 26 0
- Server version: 1.24.0 → 1.25.0 functional
- 25 Oct 26 0
- Server version: 1.23.0 → 1.24.0 functional
- Server version: 1.22.0 → 1.23.0 functional
- Server version: 1.21.3 → 1.22.0 functional
- Server version: 1.21.0 → 1.21.3 functional
- 24 Oct 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Server version: 1.20.0 → 1.21.0 functional
- Server version: 1.19.0 → 1.20.0 functional
- Server version: 1.17.0 → 1.19.0 functional
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 5 Nov 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 | 13 Sept 2026 | 12 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d9be3287b0fde9630e825ba1f79bff3f |
| SANs: usefulapi.io, *.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 |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of gumroad.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 38690 | 8 | Verified |
| usefulapi.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Inconclusive
We could not reach the endpoint well enough to judge its authorisation posture.
| Result | Inconclusive |
|---|---|
| HTTP status | 302 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://gumroad.usefulapi.io/mcp | Redirected | 302 | https://usefulapi.io/gumroad/ |
| http (plaintext) | http://gumroad.usefulapi.io/mcp | Inconclusive | 302 | http://gumroad.usefulapi.io/mcp |
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. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
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.
| 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.
| 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.
| 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.
| 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.
| 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}.
| 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}.
| 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}.
| 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}.
| 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 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}.
| 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.
| 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.
| 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 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.
| 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.
| 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. |
| 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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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.
| 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}.
| 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 ~118
Verify a license key for a product (checks validity and returns purchase details). By default this does NOT increment the uses count; with increment_uses_count: true it records a use (a write). Gumroad REST: POST /v2/licenses/verify.
| 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.
How do I install the Gumroad MCP by usefulapi server?
Gumroad MCP by usefulapi is a hosted endpoint at https://gumroad.usefulapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · gumroad.usefulapi.io
claude mcp add --transport http io-usefulapi-gumroad 'https://gumroad.usefulapi.io/mcp'
What is the Gumroad MCP by usefulapi server?
Gumroad MCP by usefulapi is listed in the public MCP registry as io.usefulapi/gumroad. Read products, sales, subscribers and offer codes; verify, enable and disable product licenses. This page covers its hosted endpoint (https://gumroad.usefulapi.io/mcp).
Is the Gumroad MCP by usefulapi server safe to use?
Gumroad MCP by usefulapi scores 18 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Gumroad MCP by usefulapi server expose?
Gumroad MCP by usefulapi exposes 20 tools: gumroad_get_user, gumroad_list_products, gumroad_get_product, gumroad_list_sales, gumroad_get_sale, and 15 more. Their descriptions and schemas cost roughly 1,350 tokens of context every time the server is loaded.
Does the Gumroad MCP by usefulapi server require authentication?
Its publisher declares no required credentials for Gumroad MCP by usefulapi. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.
Is the Gumroad MCP by usefulapi server still maintained?
Gumroad MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.