mixcloud-mcp@0.3.1
CAUTION· not startedPublisher claims: "FastMCP server bridging the Mixcloud API" Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Registry PyPI (MCP server)Publisher nelsonra · publishing for 223 daysInstalls 19Last detonated 3d ago
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: 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
DISABLE_AUTHMCP_API_KEYMIXCLOUD_ACCESS_TOKENMIXCLOUD_CLIENT_SECRETConfiguration, not credentials: CORS_ORIGIN, INPUT, MCP_PORT, MCP_PUBLIC_URL, MIXCLOUD_CLIENT_ID, UPLOAD_PORT- Where it talks to
- mixcloud.com (its own)Also powerfm.org — 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 powerfm.org as well as its own vendor. The guard injects DISABLE_AUTH, MCP_API_KEY, MIXCLOUD_ACCESS_TOKEN, MIXCLOUD_CLIENT_SECRET only into requests to mixcloud.com (and its subdomains) and refuses the rest.
$vet-skills run --secrets DISABLE_AUTH=mixcloud.com,MCP_API_KEY=mixcloud.com,MIXCLOUD_ACCESS_TOKEN=mixcloud.com,MIXCLOUD_CLIENT_SECRET=mixcloud.com -- uvx mixcloud-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 79/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Pipe-to-shell pattern; Access to sensitive file paths; Access to sensitive file paths. Summary: no network, touches nothing outside the project, writes no memory.
Behavior trace
Honeypot run · 0 s · 2 scenarios · 0 deviationst+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
Pipe-to-shell patternCLAUDE.md:76 · Pipe-to-shell pattern — downloads and immediately executes remote code
AST06curl -LsSf https://astral.sh/uv/install.sh | shFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.HIGH
Access to sensitive file pathssrc/mixcloud_mcp/sidecar.py:38 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05return config_dir / ".env"Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.MEDIUM
Access to sensitive file pathstests/test_sidecar.py:32 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05env_file = tmp_path / ".env"Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.HIGH
Access to sensitive file pathssrc/mixcloud_mcp/oauth.py:29 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05candidate = path / ".env"Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.MEDIUM
Access to sensitive file pathstests/test_sidecar.py:12 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05assert result.name == ".env"Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.HIGH
Access to sensitive file pathssrc/mixcloud_mcp/sidecar.py:6 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05- GET /oauth/callback — exchanges the code, writes token to .env + os.environFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.HIGH
Access to sensitive file pathsCLAUDE.md:31 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05├── .env.example ← copy to .env and fill in your keysFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.HIGH
Access to sensitive file pathsCLAUDE.md:82 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05cp .env.example .envFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.HIGH
Access to sensitive file pathssrc/mixcloud_mcp/oauth.py:1 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05"""One-time OAuth flow to obtain a Mixcloud access token and save it to .env."""Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.HIGH
Access to sensitive file pathssrc/mixcloud_mcp/oauth.py:26 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05"""Walk up from cwd to find an existing .env, or default to cwd/.env."""Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.HIGH
Access to sensitive file pathssrc/mixcloud_mcp/stdio.py:26 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05load_dotenv(Path.home() / ".config" / "mixcloud-mcp" / ".env")Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.HIGH
Access to sensitive file pathssrc/mixcloud_mcp/stdio.py:27 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05load_dotenv() # local .env for dev overrides; won't clobber already-set varsFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.HIGH
Access to sensitive file pathssrc/mixcloud_mcp/oauth.py:33 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05return Path.cwd() / ".env"Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.MEDIUM
Remote installer piped to shellCLAUDE.md:76 · Remote installer piped to shell
AST07curl -LsSf https://astral.sh/uv/install.sh | shFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.MEDIUM
Access to sensitive file pathstests/test_sidecar.py:9 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05"""Token file is always under ~/.config/mixcloud-mcp/.env."""Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.HIGH
Access to sensitive file pathssrc/mixcloud_mcp/sidecar.py:12 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05then stored in .env and read by tools as MIXCLOUD_ACCESS_TOKEN. See ADR 002.Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.MEDIUM
Access to sensitive file pathstests/test_sidecar.py:47 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files
AST05env_file = tmp_path / ".env"Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.MEDIUM
File type combined with upload actionmcp-app/src/useMixcloudUploader.ts:189 · File type combined with upload action — agent may exfiltrate local data files
AST07const data = (await response.json()) as UploadResultFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.Cost to the agent
Instructions loaded
≈1,729 tok
2 files · 67 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 mixcloud-mcp@0.3.1 as of 3d ago. This is the package itself, not its dependencies.
What would make this Verified
1 point to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%- Unclaimed publisher≈ +8 on the totalClaim nelsonra: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
- Pipe-to-shell pattern≈ +4 on the totalBuild commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
- 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.
- Remote installer piped to shell≈ +2 on the totalBuild commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
- 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.
Publish a new version to PyPI, then queue it here. Not your skill? Claim the handle to get verdict changes by email.Claim nelsonraPropose a patch to the maintainer