Skills/PyPI/nexus-mcp-ci

nexus-mcp-ci@2.4.6

VERIFIED· not started

Publisher claims: "Local MCP server for Claude Code, Codex and Cursor: hybrid code search and a call graph, so your coding agent finds the right file with far fewer tokens. Measure it on your repo with `nexus-mcp-ci eval`." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher jaggernaut007 · publishing for 246 daysInstalls 1,221Last detonated 33 h ago
$claude mcp add nexus-mcp-ci -- uvx nexus-mcp-ci
WatchReport an issue

Coverage

Not started: dependency install failed; the server itself was not observed.
Tested
install scripts, with decoy credentials in place · second launch with the clock 45 days ahead · 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
ANTHROPIC_API_KEYConfiguration, not credentials: COLUMNS, HF_HOME, HF_HUB_OFFLINE, ISSUE_BODY, ISSUE_NUMBER, NEXUS_EVAL_CACHE, NEXUS_EVAL_HOME, NEXUS_EVAL_PRICING, NEXUS_OFFLINE, NEXUS_STORAGE_DIR, TRANSFORMERS_OFFLINE
Where it talks to
no vendor host named in the codeAlso gstatic.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 gstatic.com as well as its own vendor. The guard injects ANTHROPIC_API_KEY only into requests to the host you bind (and its subdomains) and refuses the rest.

$vet-skills run --net declared -- uvx nexus-mcp-ci

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 (3 scenarios; not started: dependency install failed; the server itself was not observed) on 2026-11-13 and scored it 84/100 (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 · 1 s · 3 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessinstall script run in the sandbox
0.2sprocessexited 1:
0.4sprocessdependency install exit 1 ·
0.4sclaimednot started: dependency install failed (exit 1); the server itself was not observed
0.4sprocessscript backend runs setup only
0.5sprocesssecond launch, clock +45 days, CI unset
0.6sprocessexited 1: ./setup.sh: line 130: .venv/bin/activate: No such file or directory

Static findings

MEDIUM
Python subprocess execution detectedscripts/measure_memory.py:83 · Python subprocess execution detectedout = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/nexus_mcp/evaluate/baseline.py:44 · Python subprocess execution detectedproc = subprocess.run(Fix: Put hosts, commands and strings in plain source. Decoding at runtime looks identical to malware and costs points on its own.
AST05
MEDIUM
Python subprocess execution detectedsrc/nexus_mcp/engines/live_grep.py:68 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/nexus_mcp/setup_clients.py:406 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/nexus_mcp/engines/live_grep.py:324 · Python subprocess execution detectedresult = subprocess.run(cmd, capture_output=True, text=True, check=False)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/nexus_mcp/engines/live_grep.py:127 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
HIGH
URL with embedded credentialsscripts/publish_results.py:758 · URL with embedded credentials — may be phishing or credential leaking<link href="https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap" rel="stylesheet">Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST07
MEDIUM
Python subprocess execution detectedsrc/nexus_mcp/engines/live_grep.py:276 · Python subprocess execution detectedresult = subprocess.run(cmd, capture_output=True, text=True, check=False)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/nexus_mcp/setup_clients.py:403 · Python subprocess execution detectedsubprocess.run(cmd, check=True, capture_output=True, text=True, timeout=60)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedscripts/archive_runs.py:50 · Python subprocess execution detectedproc = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
HIGH
Access to sensitive file pathssrc/nexus_mcp/engines/live_grep.py:50 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"""True for a path with a hidden part (`.env.py`, `.config/x.py`), as ripgrep skips."""Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Python subprocess execution detectedsrc/nexus_mcp/evaluate/data_cmd.py:24 · Python subprocess execution detectedinside = subprocess.run(Fix: Put hosts, commands and strings in plain source. Decoding at runtime looks identical to malware and costs points on its own.
AST05
MEDIUM
Python subprocess execution detectedsrc/nexus_mcp/setup_clients.py:624 · Python subprocess execution detectedsubprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/nexus_mcp/evaluate/data_cmd.py:33 · Python subprocess execution detectedignored = subprocess.run(Fix: Put hosts, commands and strings in plain source. Decoding at runtime looks identical to malware and costs points on its own.
AST05
LOW
Instructs the agent to modify its persistent memory or instruction filessrc/nexus_mcp/setup_clients.py:503 · Instructs the agent to modify its persistent memory or instruction files · informational: not an instruction filef"add a marked nexus-mcp block to {project / 'AGENTS.md'}",Fix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01

Cost to the agent

Instructions loaded
≈904 tok
2 files · 81 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-mcp-ci@2.4.6 as of 31 h ago. This is the package itself, not its dependencies.