UniVoucher MCP Server (UniVoucher/UniVoucher-MCP) is an MCP server listed on the M8ven Trust Index. It scores 54 out of 100, grade D. It declares 9 tools. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
D
Caution
54/100

UniVoucher MCP Server

Enables interaction with UniVoucher's decentralized crypto gift card protocol across multiple blockchains. Supports querying documentation, retrieving real-time protocol statistics, and creating/redeeming crypto gift cards on networks like Ethereum, Polygon, BSC, and more.

→ UniVoucher/UniVoucher-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.

How we verified

Code Verified⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

⚡ Connect GitHub → continuous verification on every pushwhy connect →

Who stands behind it

UniVoucher

Source: Glama

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

⚡ Connect GitHub for Live Monitored

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
⚠️
Known vulnerabilities in dependencies: 14 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: WALLET_PRIVATE_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// tools this server exposes9 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.

query_api_cards

Query UniVoucher cards with various filters

get_single_card

Get details of a single card by ID (integer) or slot ID (string). Provide either id OR slotId, not both.

create_gift_card

Create a new UniVoucher gift card using your standard Ethereum crypto wallet private key. The private key is optional and can be set via WALLET_PRIVATE_KEY environment variable (with or without 0x prefix). Uses Direct Response Mode for immediate card details.

get_current_fees

Get current fee percentages for chains

get_fee_history

Get fee update history for a specific chain

get_chains

Get information about supported chains

list_doc_pages

List all available UniVoucher documentation pages with their descriptions to help find the right content

get_doc_page

Get the complete content of a specific UniVoucher documentation page. Much more effective than searching - returns the entire page content.

get_multiple_doc_pages

Get the complete content of multiple UniVoucher documentation pages at once. Useful when you need comprehensive information across multiple related topics.

// known CVEs in dependencies14 high4 medium12 low

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

high@modelcontextprotocol/sdk@0.5.0GHSA-w48q-cv73-mx4w

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

highaxios@1.6.0GHSA-35jp-ww65-95wh

axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`

highaxios@1.6.0GHSA-3g43-6gmg-66jw

axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge

highaxios@1.6.0GHSA-43fc-jf86-j433

Axios is Vulnerable to Denial of Service via __proto__ Key in mergeConfig

highaxios@1.6.0GHSA-4hjh-wcwx-xvwj

Axios is vulnerable to DoS attack through lack of data size check

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.
🔐 secretWALLET_PRIVATE_KEY"": "your_ethereum_wallet_private_key_here"
// 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

9/9 tools missing one or more hints — query_api_cards (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_single_card (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); create_gift_card (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +6 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.

Production dependencies are patched

0 critical, 14 high severity in production deps — @modelcontextprotocol/sdk@0.5.0 (high), axios@1.6.0 (high)

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

Dependency freshness

1/5 production deps stale: node-fetch@2023-11-30 (2.7y)

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 4 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
[![M8ven Verified](https://m8ven.ai/badge/mcp/univoucher/univoucher-mcp?variant=verified)](https://m8ven.ai/mcp/univoucher/univoucher-mcp)
Shows verification status without the grade. Want the grade badge instead? Remove ?variant=verified from the URL.
commit: 18458d830dd2f7a1e1cb291f25684a7b50942ae6
code hash: 070a919dee2219a65cf4c5fbdeb8b15d6042eb2d46533f9836a43d55734e4017
view raw JSON →
Check MCPs from inside your assistant
Tool Check · MCP

Vetting this one by hand? Tool Check is an MCP that scores other MCPs. Add it once and ask Claude, ChatGPT, or any MCP client to grade a server, surface CVEs, check the publisher, and suggest safer alternatives — before you install.

https://m8ven.ai/api/mcp/tool-check
check_toolsearch_toolscompare_toolsrecommend_alternativescheck_publisherreport_concern
How to add it →Free · no account needed · works in any MCP client