WolvenKit MCP (Y4rd13/wolvenkit-mcp) is an MCP server listed on the M8ven Trust Index. It scores 60 out of 100, grade C. It declares 45 tools. No publisher has claimed this listing.

C
Caution
60/100

WolvenKit MCP

MCP server that gives Claude Code access to WolvenKit for Cyberpunk 2077 modding. Extract archives, convert game files to JSON, inspect meshes and textures, manage mods, and build mod projects — all from your terminal.

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

Y4rd13

Source: Glama

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Install from

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 exposes45 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.

unbundle_archive

Extract files from a Cyberpunk 2077 .archive file. Use the wildcard filter to extract only specific files (e.g., '*.mesh' for meshes). Without a filter, extracts everything (can be very large).

pack_archive

Pack a folder of REDengine files into a .archive file. The folder should contain the game file structure (e.g., base/characters/...).

archive_info

Display information about an .archive file — lists all files contained in it with sizes. Use this to explore what's inside an archive before extracting.

list_archives

List all .archive files in the game's content directory. Useful for finding which archive contains specific game files.

search_archives

Search for files across ALL game archives by pattern. Finds which archive(s) contain files matching your query (e.g., 'katana', 'player', 'johnny'). Much faster than checking archives one by one.

list_installed_mods

List all installed .archive mods in the game's mod directory, with file sizes.

mod_conflicts

Detect conflicts between installed mods — shows which mods modify the same game files. Run this before installing new mods to avoid issues.

export_file

Export a REDengine file to a raw format (meshes to GLB, textures to PNG/TGA/DDS, etc.). Supports .mesh, .xbm, .mlmask, .wem, and other formats.

import_file

Import a raw file back into REDengine format (PNG/TGA → XBM, GLB → mesh, etc.). The file must follow WolvenKit naming conventions.

uncook_archive

Extract and export all assets from an archive in one step — unbundles and converts to raw formats (textures to PNG, meshes to GLB, etc.). Use wildcard filter to limit scope.

convert_to_json

Convert a REDengine file (.mesh, .ent, .app, .mi, .mt, .inkatlas, etc.) to human-readable JSON. The JSON output is written next to the source file with a .json extension.

convert_from_json

Convert a JSON file back to REDengine binary format. The JSON must have been generated by convert_to_json. Recreates the corresponding game file.

inspect_file

Quick inspection of a REDengine file — converts to JSON and returns a summary of its structure (type, chunks, dependencies) without the full content. Faster than convert_to_json for exploring.

get_game_file

One-step shortcut: find a game file by path, extract it from the correct archive, and convert to JSON. No need to know which archive contains it. Example: 'base\gameplay\items\weapons\melee\katana\preset_katana_saburo.ent'.

batch_convert

Convert multiple REDengine files to JSON in a single operation. Provide a directory and file extension filter.

patch_json

Modify specific fields in a REDengine JSON file without editing the entire file. Provide a JSON path and new value. After patching, use convert_from_json to rebuild the game file.

wolvenkit_status

Check WolvenKit CLI availability, version, and configured paths. Works without the game running — useful for verifying the setup.

hash_value

Compute a FNV1a64 hash for a game path string. Useful for working with hashed file references in REDengine.

find_by_hash

Search for a game file by its FNV1a64 hash value. Useful when you have a hash from crash logs or game data and need to find the corresponding file.

analyze_performance

Estimate performance impact of a mod project by analyzing mesh vertex counts, texture memory, and file counts. Helps identify heavy assets.

decompile_script

Search for .reds (REDscript) or .script files in game archives. These contain game logic scripts.

generate_xlmap

Generate an ArchiveXL resource mapping YAML template. ArchiveXL is used for adding new resources (items, appearances) to the game.

diff_files

Compare two REDengine files by converting both to JSON and showing the differences. Useful for understanding what a mod changes vs the original game file.

get_file_dependencies

List all files referenced by a REDengine file (materials, meshes, textures, etc). Converts to JSON and extracts all file path references. Essential for knowing what to extract when modifying a file.

extract_mesh_info

Get mesh information without full export: submesh count, material references, bone count, vertex/index counts. Quick way to evaluate a mesh.

get_texture_info

Get texture (.xbm) information without exporting: resolution, format, mipmap count, compression type.

list_entity_components

List all components of a .ent (entity) file: meshes, effects, animations, appearances, and their types.

find_appearances

Search for .app (appearance) files related to an entity or keyword. Searches across all game archives.

find_materials

Given a mesh file, list all materials it uses (.mi material instances and .mt material templates). Extracts from the mesh JSON.

list_inkatlas_slots

List all texture slots in a .inkatlas file (UI texture atlases). Shows slot names and texture references.

get_animation_list

List available animations in a .anims or .rig file. Shows animation names, durations, and bone counts.

search_game_files

Search for game files by extension and name pattern within a specific archive. More targeted than search_archives — filters by file type.

backup_archive

Create a backup of a game archive or mod archive before modifying it. Copies to a .bak file alongside the original.

restore_archive

Restore a game archive from its .bak backup file.

compare_archives

Compare a mod archive against the original game archive. Shows which files are added, removed, or modified.

merge_archives

Merge multiple archive source directories into a single .archive file.

install_mod_from_url

Download and install a mod archive from a direct URL. Downloads to the game's mod directory. Only supports direct download links (not Nexus pages).

create_mod_project

Create a WolvenKit mod project directory structure. Sets up the standard folder layout for a Cyberpunk 2077 mod.

build_mod

Build a mod by packing the source/archive directory into a .archive file and optionally installing it to the game's mod directory.

list_project_files

List files in a WolvenKit mod project, organized by directory.

copy_to_project

Extract a game file directly into a mod project's source/archive directory. One-step shortcut for unbundle + copy. Maintains the game path structure.

validate_mod

Validate a mod project: check directory structure, verify files exist, report potential issues.

strip_unused

Analyze a mod project and identify files that are not referenced by any other file. Helps reduce mod size by finding orphaned assets.

get_cooked_size

Estimate the final packed size of a mod project by measuring the source/archive directory.

generate_tweakxml

Generate a TweakXL YAML template for creating or modifying a TweakDB record. Provides a starting template you can customize.

// 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@1.12.1GHSA-345p-7cg4-v4c7

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

high@modelcontextprotocol/sdk@1.12.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.1GHSA-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.
configCP77_GAME_DIRe "=/path/to/Cyberpunk 2077" \
configCP77_MOD_DIRe "=/path/to/Cyberpunk 2077/archive/pc/mod" \
configWOLVENKIT_CLIe "=cp77tools" \
// 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

45/45 tools missing one or more hints — unbundle_archive (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); pack_archive (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); archive_info (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +42 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

33/45 tool handlers declare input schemas (73%)

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

Tests exist

No test files found

Add tests that exercise each declared tool.

Production dependencies are patched

0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.12.1 (high), @modelcontextprotocol/sdk@1.12.1 (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 5 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: 39429a7036ad1deb7b6dcc18738a1f3b4bc90178
code hash: 51132dd520e9b94505592ee60dd5bfdcf4c72416873f9e47637f8d0c42123034
view raw JSON →
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