nan-mcp-server (luciferfran/nan-mcp-server) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: we have no way to read this server ourselves. No publisher has claimed this listing.

Back to MCP Trust Indexm8ven
C
Caution
74/100
19 days ago

nan-mcp-server

MCP server exposing NaN API media tools (image generation/editing, text-to-speech, speech-to-text, embeddings, reranking) for any MCP-compatible client.

→ luciferfran/nan-mcp-server· 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

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Who stands behind it

luciferfran

Source: Glama

Is this your MCP?

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Install from

Glama

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// key findings
🚨
Secret credentials may flow to a network call
1 flow detected: NAN_API_KEY. We can’t prove the destination matches the brand the credential belongs to.
🔐
You'll be asked for 1 credential: NAN_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// 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.
🔐 secretNAN_API_KEYexport ="sk-tu-key-aqui"
configNAN_BASE_URLNo Base URL de la API (default https://api.nan.builders/v1)
configNAN_OUTPUT_DIRLas imágenes y audios generados se guardan en ~/nan-mcp-output/ (configurable con ).
configNAN_TIMEOUT_MSNo Timeout por petición en ms (default 180000, 3 min)
// 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

8/8 tools missing one or more hints — generate_image (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_voices (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); text_to_speech (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +5 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 test coverage

Only 2/8 tools referenced in tests (25%)

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

Secrets stay with their owner

1 secret/sensitive value flow into network calls (NAN_API_KEY → dynamic)

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

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/luciferfran-nan-mcp-server-184a6g?variant=verified)](https://m8ven.ai/mcp/luciferfran-nan-mcp-server-184a6g)
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commit: 88ce414cd0f2ed33d8d46a47d039d729cd624f92
code hash: d8439b29920e78532dcc818f2145f9b7c47d50564851cf1d865eb9fe16780def
verified: 8/9/2026, 7:31:23 AM
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