bunq-mcp-server (erfanmomeniii/bunq-mcp) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 14 tools. No publisher has claimed this listing.

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C
Emerging
74/100

bunq-mcp-server

MCP server for the bunq banking API

→ erfanmomeniii/bunq-mcp· npm: bunq-mcp-server· listed on npm

Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. 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

erfanmomeniii

Source: npm

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Install from

npmscored separately

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: 1 critical, 5 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 1 credential: BUNQ_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies1 critical5 high9 low

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

criticalvitest@3.2.4GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

highundici@8.1.0GHSA-38rv-x7px-6hhq

undici WebSocket client vulnerable to denial of service via cumulative fragment bypass

highundici@8.1.0GHSA-4cwx-7wf7-3272

undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives

highundici@8.1.0GHSA-hm92-r4w5-c3mj

undici vulnerable to cross-origin request routing via SOCKS5 proxy pool reuse

highundici@8.1.0GHSA-vmh5-mc38-953g

undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent

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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.
configBUNQ_API_CONTEXT_PATHPath to persist API context
🔐 secretBUNQ_API_KEYbunq API key
configBUNQ_ENVIRONMENTsandbox or production
configBUNQ_LOG_LEVELLog verbosity: debug, info, warn, error
// quality suggestions

All four hints declared on every tool

14/14 tools missing one or more hints — bunq_list_monetary_accounts (missing: openWorldHint); bunq_get_monetary_account (missing: openWorldHint); bunq_list_events (missing: openWorldHint), +11 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.

Dev dependencies

6 critical/high in dev-only deps (does not ship to users)

Upgrade dev dependencies when convenient.

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 2 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
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commit: 0859953c50bee729447f8c1f1904d7e52aec5046
code hash: 1a5bc65ad887f2499d6c374f1511bb8df94a6251d1b3d8bb5e86735b0b4f13bf
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