Skills/PyPI/nexus-mods-mcp

nexus-mods-mcp@1.4.1

VERIFIED· not started

Publisher claims: "Nexus Mods MCP server - 140 tools over REST API v1 + GraphQL API v2" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher talya1412 · publishing for 74 daysInstalls 206Last detonated 33 h ago
$claude mcp add nexus-mods-mcp -- uvx nexus-mods-mcp
WatchReport an issue

Coverage

Not started: dependency install failed; the server itself was not observed.
Tested
the dependency install step · every file read, file written and host contacted by what ran
Not tested
server startup · the tool list · tool behavior

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
NEXUS_API_KEYNEXUS_OAUTH_CLIENT_IDNEXUS_OAUTH_CLIENT_SECRETNEXUS_OAUTH_REDIRECT_URINEXUS_OAUTH_TOKEN_FILEConfiguration, not credentials: NEXUS_MCP_TOOLS
Where it talks to
nexusmods.com (its own)Also swaggerhub.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
server startup · the tool list · tool behavior

Connect it with a scoped credential, under the guard, and read the third-party hosts first. The code names swaggerhub.com as well as its own vendor. The guard injects NEXUS_API_KEY, NEXUS_OAUTH_CLIENT_ID, NEXUS_OAUTH_CLIENT_SECRET, NEXUS_OAUTH_REDIRECT_URI, NEXUS_OAUTH_TOKEN_FILE only into requests to nexusmods.com (and its subdomains) and refuses the rest.

$vet-skills run --secrets NEXUS_API_KEY=nexusmods.com,NEXUS_OAUTH_CLIENT_ID=nexusmods.com,NEXUS_OAUTH_CLIENT_SECRET=nexusmods.com,NEXUS_OAUTH_REDIRECT_URI=nexusmods.com,NEXUS_OAUTH_TOKEN_FILE=nexusmods.com -- uvx nexus-mods-mcp

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; not started: dependency install failed; the server itself was not observed) on 2026-11-13 and scored it 90/100 (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 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.1sprocessdependency install exit 1 ·
0.1sclaimednot started: dependency install failed (exit 1); the server itself was not observed
0.1sprocessscript backend runs setup only
0.1sprocessno install scripts to re-run

Static findings

MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_registry.py:65 · MCP server using network transport (SSE/HTTP) — data sent over networkassert nexus_mcp.mcp._mcp_server.website_url == "https://github.com/Talya1412/nexus-mcp"Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
File permission modification commandnexus_mcp/_core.py:152 · File permission modification command — agent changes file ownership/permissionswith contextlib.suppress(OSError): # Windows: chmod is best-effortFix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05

Cost to the agent

Instructions loaded
≈54 tok
1 file · 39 in bundle
Tool list per prompt
≈0 tok
0 tools · 0 per tool
Handshake
no reply
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 0

Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.

Known vulnerabilities

No advisories in OSV for nexus-mods-mcp@1.4.1 as of 31 h ago. This is the package itself, not its dependencies.