gumroad-mcp (rmarescu/gumroad-mcp) is an MCP server listed on the M8ven Trust Index. It scores 69 out of 100, grade C. It declares 11 tools. No publisher has claimed this listing.

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C
Caution
69/100

gumroad-mcp

A Model Context Protocol (MCP) server implementation for Gumroad API

→ rmarescu/gumroad-mcp· listed on mcp_so

Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

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Who stands behind it

rmarescu

Source: mcp.so · also listed on github_topic, ModelScope

Is this your MCP?

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Install from

mcp.sonot scored hereGitHubModelScopenot scored here

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
⚠️
Known vulnerabilities in dependencies: 2 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
🔐
You'll be asked for 1 credential: GUMROAD_ACCESS_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// tools this server exposes11 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

gumroad_get_products

Retrieves all of the products

gumroad_get_sales

Retrieves all of the successful sales

gumroad_get_product

Retrieves a single product by its ID

gumroad_get_user

Retrieves the authenticated user's data. Available with any scope.

gumroad_disable_product

Disables a product by its ID

gumroad_enable_product

Enables a product by its ID

gumroad_get_offer_codes

Retrieves all offer codes for a product

gumroad_get_offer_code

Retrieves a single offer code by its ID for a specific product

gumroad_create_offer_code

Creates a new offer code for a product

gumroad_update_offer_code

Updates the max purchase count of an existing offer code for a product

gumroad_delete_offer_code

Deletes an offer code for a product

// known CVEs in dependencies2 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.8.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.8.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
🔐 secretGUMROAD_ACCESS_TOKEN
configGUMROAD_BASE_URLIf you're using a self-hosted Gumroad instance, you can configure the server to connect to your custom URL via :
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

11/11 tools missing one or more hints — gumroad_get_products (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); gumroad_get_sales (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); gumroad_get_product (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +8 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tests exist

No test files found

Add tests that exercise each declared tool.

Shell command execution

1 call in production code run through a shell (src/commands/init.ts:283)

Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.

Production dependencies are patched

0 critical, 2 high severity in production deps — @modelcontextprotocol/sdk@1.8.0 (high), @modelcontextprotocol/sdk@1.8.0 (high)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
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commit: 657d05e41d9cea07ba88f0eddd3c182597a77d00
code hash: 5f73ca08bdae81f56d4da4cb8ea33a587db64c513ddba52ed0e2dd88659bdf3d
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