Skills/PyPI/postfader-fl-studio-mcp

postfader-fl-studio-mcp@12.0.3

VERIFIED· not started

Publisher claims: "FL Studio MCP server: let Claude, Codex, Cursor, or any MCP client read, mix, compose, and edit your open FL Studio project" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher synopsys0 · publishing for 41 daysInstalls 415Last detonated 20 min ago
$claude mcp add postfader-fl-studio-mcp -- uvx postfader-fl-studio-mcp
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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
no credential variables read in the code
Where it talks to
no vendor host named in the codeAlso cyclonedx.org, githubusercontent.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 under the guard. Not started: dependency install failed; the server itself was not observed. 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 postfader-fl-studio-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 (3 scenarios; not started: dependency install failed; the server itself was not observed) on 2026-11-14 and scored it 81/100 (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
0.2sprocessexec /usr/bin/dirname
0.2sprocessexec /usr/bin/python3.11
0.2sprocessexec /tmp/ks-detonate-jYZFD8/setup/home/work/acme-api/.claude/skills/postfader-fl-studio-mcp/.venv/bin/python3.11
0.2sprocessexited 1:
0.3sprocessdependency install exit 1 ·
0.3sclaimednot started: dependency install failed (exit 1); the server itself was not observed
0.3sprocessscript backend runs setup only
0.4sprocesssecond launch, clock +45 days, CI unset
0.5sprocessexec /usr/bin/dirname
0.5sprocessexec /tmp/ks-detonate-jYZFD8/later/home/work/acme-api/.claude/skills/postfader-fl-studio-mcp/.venv/bin/pip
0.5sprocessexited 127: ./scripts/install.sh: line 59: /tmp/ks-detonate-jYZFD8/later/home/work/acme-api/.claude/skills/postfader-fl-studio-mcp/.venv/bin/pip: No such file or directory

Static findings

MEDIUM
Python subprocess execution detectedscripts/check_public_tree.py:254 · Python subprocess execution detectedprocess = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedscripts/clean_wheel_smoke.py:19 · Python subprocess execution detectedcompleted = 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 pathsscripts/check_mcpb_bundle.py:70 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesFORBIDDEN_NAMES = {".mcp.json", ".env", ".DS_Store"}Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
npx invocation of non-well-known packagescripts/build_mcpb.py:50 · npx invocation of non-well-known package — may execute untrusted code"npx or pnpm is required to validate and build the MCPB archive"Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
Python subprocess execution detectedscripts/run_coverage.py:206 · Python subprocess execution detectedreport_result = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedscripts/run_coverage.py:168 · Python subprocess execution detectedsafe_result = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedscripts/run_safe_tests.py:150 · 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
Python subprocess execution detectedscripts/run_coverage.py:79 · Python subprocess execution detectedcompleted = subprocess.run(command, cwd=ROOT, env=env, check=False)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
HIGH
Access to sensitive file pathsscripts/check_mcpb_bundle.py:119 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesor lowered_name.startswith(".env.")Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Python subprocess execution detectedscripts/build_release_bundles.py:89 · Python subprocess execution detectedcompleted = 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 pathsscripts/check_public_tree.py:306 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesname_folded.startswith(".env.") and name_folded != ".env.example"Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsscripts/check_public_tree.py:305 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesif name_folded == ".env" or (Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
npx invocation of non-well-known packagetests/test_mcpb.py:157 · npx invocation of non-well-known package — may execute untrusted codewith self.assertRaisesRegex(RuntimeError, "npx or pnpm"):Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
Python subprocess execution detectedscripts/validate_selection_readonly.py:38 · Python subprocess execution detectedraise SystemExit(subprocess.call(command))Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedscripts/inspect_readonly.py:36 · Python subprocess execution detectedraise SystemExit(subprocess.call(command))Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedscripts/build_mcpb.py:57 · Python subprocess execution detectedsubprocess.run(command, cwd=ROOT, check=True)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedscripts/run_coverage.py:187 · Python subprocess execution detectedjson_result = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05

Cost to the agent

Instructions loaded
≈73 tok
1 file · 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

Not checked against OSV yet; the weekly check has not reached this version.