vrcw-mcp@0.1.0
VERIFIED· install onlyPublisher claims: "Enables an AI agent to develop VRChat worlds through a live Unity editor bridge: UdonSharp authoring and out-of-Unity linting, declarative scene assembly, spatial and budget audits, assets and open-licence fetching, ClientSim scenario verification, and local PC/Quest builds without a human in the editor." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Coverage
Install scripts ran; no agent task scenario for this bundle.- Tested
- install scripts, with decoy credentials in place · second launch with the clock 45 days ahead · every file read, file written and host contacted by what ran
- Not tested
- use of the skill by an agent
What this means for the label: Verified here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.
Before you give it your token
- It will ask for
UNITY_MCP_API_KEY_CACHE_TTLUNITY_MCP_API_KEY_LOGIN_URLUNITY_MCP_API_KEY_SERVICE_TOKENUNITY_MCP_API_KEY_SERVICE_TOKEN_HEADERUNITY_MCP_API_KEY_VALIDATION_URLUNITY_MCP_INSTANCE_TOKENor--api-key-service-token-header/--api-key-service-token/--unity-instance-tokenConfiguration, not credentials: UNITY_MCP_DEFAULT_INSTANCE, UNITY_MCP_ENABLE_HTTP_SERVER, UNITY_MCP_FORMAT, UNITY_MCP_HOST, UNITY_MCP_HTTP_HOST, UNITY_MCP_HTTP_PORT, UNITY_MCP_HTTP_REMOTE_HOSTED, UNITY_MCP_HTTP_URL, UNITY_MCP_INSTANCE, UNITY_MCP_NUDGE_DURATION_S, UNITY_MCP_PROJECT_SCOPED_TOOLS, UNITY_MCP_SKIP_STARTUP_CONNECT, UNITY_MCP_TELEMETRY_ENDPOINT, UNITY_MCP_TELEMETRY_TIMEOUT, UNITY_MCP_TIMEOUT, UNITY_MCP_TRANSPORT, VRCW_PROJECT, VRCW_UNITY- Where it talks to
- no vendor host named in the codeAlso coplay.dev, polyhaven.com, astral.sh, example.invalid, openupm.com — not the publisher's domain; check what for before connecting.
- What the honeypot saw
- no credential files read · no network
- What we could not test
- use of the skill by an agent
Connect it with a scoped credential, under the guard, and read the third-party hosts first. The code names coplay.dev, polyhaven.com, astral.sh, example.invalid, openupm.com as well as its own vendor. The guard injects UNITY_MCP_API_KEY_CACHE_TTL, UNITY_MCP_API_KEY_LOGIN_URL, UNITY_MCP_API_KEY_SERVICE_TOKEN, UNITY_MCP_API_KEY_SERVICE_TOKEN_HEADER, UNITY_MCP_API_KEY_VALIDATION_URL, UNITY_MCP_INSTANCE_TOKEN only into requests to the host you bind (and its subdomains) and refuses the rest.
Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.
Is [email protected] safe to install?
KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios; install scripts ran; no agent task scenario for this bundle) on 2026-11-11 and scored it 86/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.
Behavior trace
Honeypot run · 0 s · 2 scenarios · 0 deviationsStatic findings
stall the pump legitimately, and a kill would discard real work.Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.result = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out."Parse the real VRChat client's logs for Udon exceptions, Debug.Log output and [AGENTTEL] telemetry. " +Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.* - main thread not pumping -> report, do not kill unless explicitly allowed. A lightmap bake, aFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.result = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.result = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.result = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.result = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.Cost to the agent
Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.
Known vulnerabilities
Vulnerability advisories (OSV) cover npm and PyPI packages; this registry has no advisory database.