kraken-player (zodd95x/kraken-player) is an MCP server listed on the M8ven Trust Index. It scores 72 out of 100, grade C. It declares 12 tools. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
C
Caution
72/100

kraken-player

Free and open-source music player for Windows, Mac and Linux

→ zodd95x/kraken-player· listed on github_repo_search

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.

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Who stands behind it

zodd95x

Source: github_repo_search

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Install from

GitHub

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.
// tools this server exposes12 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.

get_now_playing

获取当前正在播放的歌曲信息，包含标题、艺术家、专辑、时长、当前播放位置、播放状态及封面链接。

get_playback_status

获取播放器的播放状态，包含是否正在播放、当前进度、总时长、音量和播放速率。

play

继续或开始播放音乐。

pause

暂停当前正在播放的音乐。

toggle_play

切换播放或暂停状态。

next_track

播放下一首曲目。

previous_track

播放上一首曲目。

set_volume

设置播放器音量。可传入 0 到 1 之间的小数，或 0 到 100 之间的百分比数值。

seek

跳转当前歌曲播放进度。可传入毫秒（positionMs）或秒（seconds）。

search_and_play

按关键词搜索歌曲并立即开始播放第一首匹配的歌曲。

search_songs

按关键词搜索歌曲，返回匹配的歌曲列表。

play_track_by_id

根据歌曲 ID 播放指定歌曲。

// known CVEs in dependencies3 high9 medium6 low

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

highaxios@1.17.0GHSA-gcfj-64vw-6mp9

Axios Node HTTP adapter can use an inherited proxy after interceptor config cloning

high@fastify/static@8.3.0GHSA-83w8-p2f5-377r

@fastify/static vulnerable to route guard bypass via path traversal

highelectron@41.7.1GHSA-9f4c-93c8-jc8g

Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path

mediumaxios@1.17.0GHSA-42h9-826w-cgv3

Axios: Excessive recursion in formDataToJSON can cause denial of service

mediumaxios@1.17.0GHSA-7q8q-rj6j-mhjq

Axios: Nested axios option objects can consume polluted prototype values

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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.
configELECTRON_DISABLE_SECURITY_WARNINGS
configELECTRON_RENDERER_URL
configPORTABLE_EXECUTABLE_DIR
configVITE_SERVER_PORT
// 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 — get_now_playing (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_playback_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); play (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.

Shell command execution

2 calls in production code run through a shell (electron/main/ipc/ipc-mpv.ts:13, electron/main/services/MpvService.ts:324)

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

No arbitrary install scripts

Has postinstall/preinstall script — runs arbitrary code on npm install

Remove postinstall/preinstall hooks unless they’re essential.

Production dependencies are patched

0 critical, 1 high severity in production deps — axios@1.17.0 (high), axios@1.17.0 (medium)

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

Dev dependencies

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

Upgrade dev dependencies when convenient.

Dependency freshness

5/42 production deps abandoned (no release in 2+ years): localforage@2022-06-19 (4.2y), @pixi/filter-bulge-pinch@2023-01-11 (3.7y), jss-preset-default@2023-02-09 (3.6y)

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 8 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/zodd95x/kraken-player?variant=verified)](https://m8ven.ai/mcp/zodd95x/kraken-player)
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commit: 19ef2fcfaf34ac8be8ed43b03c1a9c2487fa239f
code hash: a4b6d52dbb20326e5fd95d662171c6185d30e874918275e749d97646e6747fe3
view raw JSON →
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