Skills/PyPI/ol-dwsim-mcp-server

ol-dwsim-mcp-server@0.1.6

CAUTION· install only

Publisher claims: "Model Context Protocol server for DWSIM chemical process simulation" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher ontoledgy · publishing for 198 daysInstalls 52Last detonated 21 h ago
What would fix thisWatchDispute verdict

Coverage

Nothing executable in the bundle ran; the trace covers the install step only.
Tested
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: Caution 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
no credential variables read in the code
Where it talks to
no vendor host named in the code
What the honeypot saw
no credential files read · no network
What we could not test
use of the skill by an agent

Connect it under the guard. Nothing executable in the bundle ran; the trace covers the install step only. The code names no credential variable; the guard pins the network to what the honeypot saw and logs every call.

$vet-skills run --net declared -- uvx ol-dwsim-mcp-server

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 (1 scenario; nothing executable in the bundle ran; the trace covers the install step only) on 2026-11-13 and scored it 76/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Hidden zero-width characters detected; Hidden zero-width characters detected; Access to sensitive file paths. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 0 s · 1 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.0sprocessscript backend runs setup only
0.0sprocessscript backend runs setup only
0.0sprocessno install scripts to re-run

Static findings

MEDIUM
MCP server using network transport (SSE/HTTP)dwsim_mcp_server/server.py:34 · MCP server using network transport (SSE/HTTP) — data sent over networkfrom dwsim_mcp_server.services import ThermodynamicsServiceFix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
HIGH
Hidden zero-width characters detecteddwsim_mcp_server/cli/main.py:1 · Hidden zero-width characters detected — may conceal content# SPDX-FileCopyrightText: 2018-2026 OntoLedgy Ltd.Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
MEDIUM
MCP server using network transport (SSE/HTTP)dwsim_mcp_server/services/__init__.py:16 · MCP server using network transport (SSE/HTTP) — data sent over networkfrom dwsim_mcp_server.services.thermodynamics_service import ThermodynamicsServiceFix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
HIGH
Hidden zero-width characters detecteddwsim_mcp_server/cli/setup.py:1 · Hidden zero-width characters detected — may conceal content# SPDX-FileCopyrightText: 2018-2026 OntoLedgy Ltd.Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
HIGH
Access to sensitive file pathsdwsim_mcp_server/cli/main.py:239 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files("env.example.j2", ".env.example", {}),Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Python subprocess execution detecteddwsim_mcp_server/cli/service.py:87 · Python subprocess execution detectedreturn subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
MCP server using network transport (SSE/HTTP)dwsim_mcp_server/cli/doctor.py:30 · MCP server using network transport (SSE/HTTP) — data sent over networkfrom dwsim_mcp_server.ipc.exceptions import AssemblyLoadErrorFix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
HIGH
Hidden zero-width characters detecteddwsim_mcp_server/cli/__init__.py:1 · Hidden zero-width characters detected — may conceal content# SPDX-FileCopyrightText: 2018-2026 OntoLedgy Ltd.Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
MEDIUM
MCP server using network transport (SSE/HTTP)dwsim_mcp_server/ipc/clr_loader.py:23 · MCP server using network transport (SSE/HTTP) — data sent over networkfrom dwsim_mcp_server.ipc.exceptions import AssemblyLoadError, map_dotnet_exceptionFix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)dwsim_mcp_server/server.py:33 · MCP server using network transport (SSE/HTTP) — data sent over networkfrom dwsim_mcp_server.service.diagnostics_service import DiagnosticsServiceFix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)dwsim_mcp_server/context.py:35 · MCP server using network transport (SSE/HTTP) — data sent over networkfrom dwsim_mcp_server.services import ThermodynamicsServiceFix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)dwsim_mcp_server/context.py:34 · MCP server using network transport (SSE/HTTP) — data sent over networkfrom dwsim_mcp_server.service.diagnostics_service import DiagnosticsServiceFix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
HIGH
Hidden zero-width characters detecteddwsim_mcp_server/observability/metrics.py:1 · Hidden zero-width characters detected — may conceal content# SPDX-FileCopyrightText: 2018-2026 OntoLedgy Ltd.Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
MEDIUM
MCP server using network transport (SSE/HTTP)dwsim_mcp_server/cli/main.py:32 · MCP server using network transport (SSE/HTTP) — data sent over networkfrom dwsim_mcp_server.cli.service import WindowsServiceManagerFix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
File type combined with upload actiondwsim_mcp_server/cli/main.py:243 · File type combined with upload action — agent may exfiltrate local data files("mcp.json.j2", "mcp.json", {"cwd": str(output_dir), "env": {}}),Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07

Cost to the agent

Instructions loaded
≈57 tok
1 file · 81 in bundle

Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.

Known vulnerabilities

No advisories in OSV for ol-dwsim-mcp-server@0.1.6 as of 20 h ago. This is the package itself, not its dependencies.

What would make this Verified

4 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%
  1. Unclaimed publisher≈ +8 on the totalClaim ontoledgy: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
  2. Hidden zero-width characters detected≈ +4 on the totalKeep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
  3. Access to sensitive file paths≈ +4 on the totalStop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
  4. MCP server using network transport (SSE/HTTP)≈ +2 on the totalNamespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
  5. Python subprocess execution detected≈ +2 on the totalBuild commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
  6. File type combined with upload action≈ +2 on the totalRemove the call, or declare the host in frontmatter and explain in the README what is sent and why.
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