mcp-use@1.7.1
VERIFIED· not startedPublisher claims: "Full Stack MCP framework for python, build MCP agents, clients, and servers." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
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
MCP_USE_API_KEYConfiguration, not credentials: MCP_USE_DEBUG- Where it talks to
- no vendor host named in the codeAlso manufact.com, rfc-editor.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 manufact.com, rfc-editor.org as well as its own vendor. The guard injects MCP_USE_API_KEY only into requests to the host you bind (and its subdomains) and refuses the rest.
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 2026-11-10 and scored it 88/100 (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 deviationsStatic findings
config = {"mcpServers": {"test": {"url": "http://test.com"}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.process = subprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.config = {"mcpServers": {"test": {"url": "http://test.com"}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.process = subprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.config = {"mcpServers": {"test": {"url": "http://test.com"}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.config = {"mcpServers": {"server1": {"url": "http://server1.com"}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.config = {"mcpServers": {"test": {"url": "http://test.com"}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.test_config = {"mcpServers": {"test": {"url": "http://test.com"}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.There are two primary ways to enable debug mode:Fix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.Cost to the agent
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 mcp-use@1.7.1 as of 4d ago. This is the package itself, not its dependencies.