Skills/PyPI/molcompose-mcp

molcompose-mcp@0.1.2

VERIFIED· not started

Publisher claims: "Agent-safe MCP server exposing MolCompose figure commands in UCSF ChimeraX" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher pypi · publishing for 723 daysInstalls 144Last detonated 3d ago
$claude mcp add molcompose-mcp -- uvx molcompose-mcp
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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
PYTHIASTUDIO_API_KEYConfiguration, not credentials: CHIMERAX_EXECUTABLE
Where it talks to
no vendor host named in the codeAlso ucsf.edu, wulab.xyz — 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 ucsf.edu, wulab.xyz as well as its own vendor. The guard injects PYTHIASTUDIO_API_KEY only into requests to the host you bind (and its subdomains) and refuses the rest.

$vet-skills run --net declared -- uvx molcompose-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 2026-11-11 and scored it 95/100 (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

HIGH
Latin word with Cyrillic or Greek look-alike letters (homoglyph)molcompose_mcp/SKILL.md:73 · Latin word with Cyrillic or Greek look-alike letters (homoglyph)ΔΔGFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
HIGH
Latin word with Cyrillic or Greek look-alike letters (homoglyph)molcompose_mcp/SKILL.md:144 · Latin word with Cyrillic or Greek look-alike letters (homoglyph)ΔΔGFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
HIGH
Latin word with Cyrillic or Greek look-alike letters (homoglyph)molcompose_mcp/SKILL.md:50 · Latin word with Cyrillic or Greek look-alike letters (homoglyph)ΔΔGFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
HIGH
Latin word with Cyrillic or Greek look-alike letters (homoglyph)molcompose_mcp/SKILL.md:158 · Latin word with Cyrillic or Greek look-alike letters (homoglyph)ΔΔGFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
HIGH
Latin word with Cyrillic or Greek look-alike letters (homoglyph)README.md:83 · Latin word with Cyrillic or Greek look-alike letters (homoglyph)ΔΔGFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
HIGH
Latin word with Cyrillic or Greek look-alike letters (homoglyph)molcompose_mcp/SKILL.md:139 · Latin word with Cyrillic or Greek look-alike letters (homoglyph)ΔΔGFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01

Cost to the agent

Instructions loaded
≈3,009 tok
1 file · 45 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 molcompose-mcp@0.1.2 as of 3d ago. This is the package itself, not its dependencies.