SGU MCP (matthewnigelgillet-cloud/sgu-mcp) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 12 tools. No publisher has claimed this listing.

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C
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74/100

SGU MCP

An MCP server for The Skeptics' Guide to the Universe podcast — search transcripts, look up episodes, pull Science or Fiction, and search news items, all from inside Claude.

→ matthewnigelgillet-cloud/sgu-mcp· listed on glama

Warning. Serious findings were identified. Review the full report before connecting. 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

matthewnigelgillet-cloud

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
🚨
Secret credentials may flow to a network call
1 flow detected: OPENAI_API_KEY. We can’t prove the destination matches the brand the credential belongs to.
🚨
Code appears obfuscated
1 file are unreadable to a human reviewer. Cannot audit what they do.
🔐
You'll be asked for 3 credentials: OPENAI_API_KEY, SGU_MCP_TOKEN, VOYAGE_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies1 low

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

lowfast-xml-parser@4.5.6GHSA-gh4j-gqv2-49f6

fast-xml-parser XMLBuilder: XML Comment and CDATA Injection via Unescaped Delimiters

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.
configEMBED_PROVIDER(default local, via @xenova/transformers, an optional dependency).
configHOST
🔐 secretOPENAI_API_KEY
configSGU_CORS_ORIGIN
🔐 secretSGU_MCP_TOKENAuth: if is set, clients must send Authorization: Bearer <token>. If it's
🔐 secretVOYAGE_API_KEY
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
// 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

12/12 tools missing one or more hints — search_transcripts (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_episode (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_latest_episodes (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +9 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.

No eval / new Function

1 eval() or new Function() call — dynamic code execution

Replace eval / Function with explicit parsing or safer alternatives.

Readable source code

1 file are minified or bundled, which is usually build output rather than concealment

Ship unminified, readable source.

Secrets not logged

1 secret value sent to error

Redact or omit secret values from log output.

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
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commit: d5ef8aefcd51390c0b8f76e3448bd697689d272d
code hash: 9762f8b0cec0a2efa08e40423abf95e33df0c9e45dea8a77ae02d539f58e0804
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