mcpsnare@0.5.0
VERIFIED· not startedPublisher claims: "Active security scanner that pentests MCP (Model Context Protocol) servers - triggers and out-of-band-confirms real vulnerabilities. Like Burp's Active Scan, but the target is an MCP server." 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
- no credential variables read in the code
- Where it talks to
- mcpsnare.example (its own)Also schemastore.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 under the guard. Not started: dependency install failed; the server itself was not observed. The code names no credential variable and talks to mcpsnare.example, its own; the guard pins the network to what the honeypot saw and logs every call.
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 83/100 (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
out = asyncio.run(view.call_tool(tools[0].name, {"path": "../../etc/passwd"}))Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.structuredContent = {"secret": "AKIAIOSFODNN7EXAMPLE"}Fix: Never read or enumerate credential locations; accept a documented environment variable instead.two = "AKIAIOSFODNN7EXAMPLE\n-----BEGIN PRIVATE KEY-----"Fix: Never read or enumerate credential locations; accept a documented environment variable instead.(``subprocess.run(..., shell=True)`` -> cmd.exe on Windows, /bin/sh on POSIX), with a REALFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.secrets = "AKIAIOSFODNN7EXAMPLE\n-----BEGIN PRIVATE KEY-----"Fix: Never read or enumerate credential locations; accept a documented environment variable instead.assert out == "read file:///../../etc/passwd"Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.- **`tool_poisoning`** — flags imperative-injection phrasing ("ignore previous instructions"),Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.leaked = "AKIAIOSFODNN7EXAMPLE\n-----BEGIN PRIVATE KEY-----"Fix: Never read or enumerate credential locations; accept a documented environment variable instead.assert "AKIAIOSFODNN7EXAMPLE" in out # structured content reaches the oraclesFix: Never read or enumerate credential locations; accept a documented environment variable instead.two = "AKIAIOSFODNN7EXAMPLE\n-----BEGIN PRIVATE KEY-----"Fix: Never read or enumerate credential locations; accept a documented environment variable instead._PAYLOADS = ["../../../../../../etc/passwd",Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.one = "AKIAIOSFODNN7EXAMPLE"Fix: Never read or enumerate credential locations; accept a documented environment variable instead.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 mcpsnare@0.5.0 as of 3d ago. This is the package itself, not its dependencies.