youtube-mcp (miller-joe/youtube-mcp) is an MCP server listed on the M8ven Trust Index. It scores 58 out of 100, grade D. It declares 16 tools. No publisher has claimed this listing.

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D
Caution
58/100

youtube-mcp

MCP server for YouTube creator-ops — video metadata, comments, playlists, channel analytics, plus a ComfyUI bridge for AI thumbnail generation.

→ miller-joe/youtube-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

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Who stands behind it

miller-joe

Source: Glama

Is this your MCP?

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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
⚠️
Known vulnerabilities in dependencies: 3 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: YOUTUBE_CLIENT_SECRET
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies3 high

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

high@modelcontextprotocol/sdk@1.11.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.11.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.11.0GHSA-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.
configCOMFYUI_DEFAULT_CKPT(no flag) sd_xl_base_1.0.safetensors Default checkpoint for bridge tool
configCOMFYUI_URLcomfyui-url (unset, bridge disabled) ComfyUI HTTP URL for bridge tools
configMCP_HOSThost 0.0.0.0 Bind host (HTTP mode only)
configMCP_PORTport 9120 Bind port (HTTP mode only)
configMCP_TRANSPORTstdio =stdio (unset) Speak MCP over stdio instead of HTTP. Use when launched as a subprocess by a stdio-first MCP client (Claude Desktop, mcp-inspector).
configXDG_CONFIG_HOME
configYOUTUBE_CLIENT_IDOr provide the client credentials via env: YOUTUBE_CLIENT_SECRET_FILE, or + YOUTUBE_CLIENT_SECRET.
🔐 secretYOUTUBE_CLIENT_SECRETOr provide the client credentials via env: YOUTUBE_CLIENT_SECRET_FILE, or YOUTUBE_CLIENT_ID + .
configYOUTUBE_CLIENT_SECRET_FILEOr provide the client credentials via env: , or YOUTUBE_CLIENT_ID + YOUTUBE_CLIENT_SECRET.
configYOUTUBE_TOKEN_FILEe =/token/token.json \
// 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

16/16 tools missing one or more hints — query_channel_analytics (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); generate_and_set_thumbnail (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_captions (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +13 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.

Tool inputs are validated

Only 0/16 tool handlers declare input schemas (0%)

Declare an inputSchema with zod/joi/yup on every tool definition.

Tool test coverage

Only 0/16 tools referenced in tests (0%)

Write tests that reference each tool by name so every tool has at least one test.

Shell command execution

1 child_process/subprocess call in production code — runs shell commands (src/index.ts:134)

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

Production dependencies are patched

0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.11.0 (high), @modelcontextprotocol/sdk@1.11.0 (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 6 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/miller-joe/youtube-mcp?variant=verified)](https://m8ven.ai/mcp/miller-joe/youtube-mcp)
Shows verification status without the grade. Want the grade badge instead? Remove ?variant=verified from the URL.
commit: 13f70c421ec6650826cf5505fd720acb5c9f2e78
code hash: 3372045b7e2dbff165f6d6af752c0e8b87f1b59a336ca34da820a000b0e2426d
view raw JSON →
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