mcp-unity (st-VALVe/mcp-unity) is an MCP server listed on the M8ven Trust Index. It scores 50 out of 100, grade D. It declares 50 tools. No publisher has claimed this listing.

Caution

50/100

mcp-unity

Item: mcp-unity
Rating: 50
Author: M8ven

Model Context Protocol (MCP) plugin to connect with Unity Editor — designed for Cursor, Claude Code, Codex, Windsurf and other IDEs

→ st-VALVe/mcp-unity · listed on github_code

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

Code Verified⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

⚡ Connect GitHub → continuous verification on every push why connect →

Who stands behind it

st-VALVe

Source: github_code

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

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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: 14 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.

// tools this server exposes50 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.

add_asset_to_scene

add_package

batch_execute

capture_diagnostics

capture_game_view

capture_performance_snapshot

create_prefab

create_scene

delete_scene

detect_unity_modal

discard_open_scene_changes

dismiss_unity_modal

enter_play_mode

exit_play_mode

find_gameobjects

duplicate_gameobject

delete_gameobject

reparent_gameobject

get_console_logs

get_gameobject

get_interactable_at_position

get_scene_info

invoke_ui_event

load_scene

create_material

assign_material

modify_material

get_material_info

execute_menu_item

recompile_scripts

run_tests

save_open_scenes

save_scene

screenshot

select_gameobject

send_console_log

set_input_field

move_gameobject

rotate_gameobject

scale_gameobject

set_transform

ui_click_gameobject

click_ui

scroll_ui

set_ui_input_text

invoke_component_method

unload_scene

update_component

update_gameobject

wait_for_ui

// known CVEs in dependencies14 high5 medium11 low

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

high@modelcontextprotocol/sdk@1.8.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.8.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

highaxios@1.8.4GHSA-35jp-ww65-95wh

axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`

highaxios@1.8.4GHSA-3g43-6gmg-66jw

axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge

highaxios@1.8.4GHSA-43fc-jf86-j433

Axios is Vulnerable to Denial of Service via __proto__ Key in mergeConfig

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.

configLOGGING

configLOGGING_FILE

configMCP_UNITY_DETECT_MODALS_ON_TIMEOUT

configUNITY_HOST

// 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

50/50 tools missing one or more hints — add_asset_to_scene (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); add_package (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); batch_execute (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +47 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

Only 0/50 tool handlers declare input schemas (0%)

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

README present

No README found

Add a README.md describing the server and its tools.

License file

No license file

Add a LICENSE file (MIT, Apache-2.0, etc.).

Tool test coverage

21/50 tools referenced in tests (42%)

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

Production dependencies are patched

0 critical, 14 high severity in production deps — @modelcontextprotocol/sdk@1.8.0 (high), @modelcontextprotocol/sdk@1.8.0 (high)

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

Dependency freshness

1/9 production deps stale: winreg@2023-10-20 (2.9y)

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 7 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/st-valve/mcp-unity?variant=verified)](https://m8ven.ai/mcp/st-valve/mcp-unity)

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commit: f540a48b783848bb927d37cb5770cac2b8513e2f

code hash: a831f4de0e4268bf3ea2a611f27f87be28a416fb45878e5ba1eab34efbd34d6e

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