null-402-mcp (shinothelegend/null-402-mcp) is an MCP server listed on the M8ven Trust Index. It scores 66 out of 100, grade C. It declares 4 tools. No publisher has claimed this listing.

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C
Caution
66/100

null-402-mcp

Lets agents pay x402-protected endpoints privately on Stellar using zero-knowledge proofs, with tools to create wallets, deposit funds, and pay endpoints while revealing only a nullifier.

→ shinothelegend/null-402-mcp· listed on glama

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.

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Who stands behind it

shinothelegend

Source: Glama

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Install from

Glamanot 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
🚨
Secret credentials may flow to a network call
1 flow detected: NULL402_ZKEY. We can’t prove the destination matches the brand the credential belongs to.
⚠️
Known vulnerabilities in dependencies: 2 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 2 credentials: GROQ_API_KEY, NULL402_OPERATOR_SECRET
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// tools this server exposes4 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.

create_wallet

Generate and fund a Stellar testnet wallet to pay privately with.

wallet_status

Show the wallet address, XLM balance, and how many private notes are spendable.

deposit

Deposit a 1-XLM note into the null-402 privacy pool (fixed denomination) to pay with.

pay
// known CVEs in dependencies2 high2 low

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

high@hono/node-server@1.13.0GHSA-wc8c-qw6v-h7f6

@hono/node-server has authorization bypass for protected static paths via encoded slashes in Serve Static Middleware

high@modelcontextprotocol/sdk@1.0.0GHSA-w48q-cv73-mx4w

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

low@hono/node-server@1.13.0GHSA-92pp-h63x-v22m

@hono/node-server: Middleware bypass via repeated slashes in serveStatic

low@hono/node-server@1.13.0GHSA-frvp-7c67-39w9

Node.js Adapter for Hono: Path traversal in `serve-static` on Windows via encoded backslash (`%5C`)

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// 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.
🔐 secretGROQ_API_KEY
configGROQ_MODEL
🔐 secretNULL402_OPERATOR_SECRET
configNULL402_POOLDeployed testnet contracts (defaults; override via / NULL402_VERIFIER):
configNULL402_PORT
configNULL402_PROVIDER
configNULL402_RPC
configNULL402_SOURCE
configNULL402_VERIFIERDeployed testnet contracts (defaults; override via NULL402_POOL / ):
configNULL402_WALLETWallets are stored locally () and never committed. This is a
configNULL402_WASM
configNULL402_ZKEY
// 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

4/4 tools missing one or more hints — create_wallet (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); wallet_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); deposit (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +1 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.

License file

No license file

Add a LICENSE file (MIT, Apache-2.0, etc.).

Tests exist

No test files found

Add tests that exercise each declared tool.

Secrets stay with their owner

1 secret sent to a request target we could not resolve (NULL402_ZKEY → dynamic) — often a configured endpoint, not necessarily third-party

Audit where credentials are sent. A NOTION_TOKEN should only reach api.notion.com — never a third-party host.

Secrets not logged

5 secret values sent to log

Redact or omit secret values from log output.

Production dependencies are patched

0 critical, 2 high severity in production deps — @hono/node-server@1.13.0 (high), @modelcontextprotocol/sdk@1.0.0 (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 7 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: db66dbe31f1e30e697febbd6bf83cea2aa84e4d6
code hash: 349af70c721669a9cbb320824ce331cab9b8fbd0255a7c1157500ec6b3eb8963
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