wayper (yuukidach/wayper) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 16 tools. No publisher has claimed this listing.

Caution

74/100

wayper

Item: wayper
Rating: 74
Author: M8ven

Desktop wallpaper manager for Wallhaven — auto-download, rotate, and manage wallpapers with GUI, CLI, and AI control

→ yuukidach/wayper · 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.

How we verified

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Who stands behind it

yuukidach

Source: github_repo_search

Is this your MCP?

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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

✅

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 exposes16 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.

status

Get current wallpaper status: mode, disk usage, and per-monitor info.

configure_autostart

Enable or disable launching the Wayper GUI at graphical session startup.

next_wallpaper

Change wallpaper. If monitor is not specified, uses the focused monitor.

prev_wallpaper

Go back to previous wallpaper in history.

fav

Favorite the current wallpaper on the focused monitor.

unfav

Remove the current wallpaper from favorites, moving it back to the pool.

ban

Ban the current wallpaper without teaching the preference model.

dislike

Dislike the current wallpaper: remove it and teach the preference model.

unban

Undo the last ban or dislike, restoring the wallpaper from trash.

set_mode

Switch wallpaper mode between SFW and NSFW. Toggles if no mode specified.

delete_wallpaper

Delete a specific wallpaper file. Useful when a wallpaper has display issues.

wallpaper_info

Get Wallhaven metadata (tags, category, views, favorites, colors, uploader, etc.) for a wallpaper. Defaults to the current wallpaper on the focused monitor.

tag_stats_top

Get the most frequent tags in a group, with ban/kept/fav counts for each.

tag_stats_lookup

Look up exact ban/kept/fav counts for specific tags.

tag_stats_combo

Check how many banned/kept/fav images match ALL specified tags simultaneously.

uploader_stats_lookup

Look up exact ban/kept/fav counts for specific uploaders.

// 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.

configWAYPER_API_PORT

configWAYPER_ICON_PATH

configXDG_DATA_HOME

configPROGRAMFILES

configSWAYSOCK

configWAYPER_SEMANTIC_CACHE

configXDG_CACHE_HOME

// 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 — status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); configure_autostart (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); next_wallpaper (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.

Destructive tools are labelled

1 tool perform destructive updates without destructiveHint — delete_wallpaper deletes at line 219 (path.unlink())

Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.

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 3 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/yuukidach/wayper?variant=verified)](https://m8ven.ai/mcp/yuukidach/wayper)

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commit: 4b1b18e6bd33aab0c04f00262485642793a73740

code hash: 7b7ceeac2cf6d1007597292cef4681ec5fb1e1d1011f0c32fd20b4227ecc1a50

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