mcp-sniffer@0.1.5
CAUTION· static onlyPublisher claims: "MCP Sniffer captures network traffic between MCP clients and servers and displays it in a web UI." Observed in sandbox: static analysis only — behavior not yet observed.
Coverage
Static only; nothing was run yet.The label rests on the code, the instruction files and the publisher. The honeypot run replaces this verdict when it completes.
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 react.dev — not the publisher's domain; check what for before connecting.
- What the honeypot saw
- nothing has run yet
- What we could not test
- everything: the server has not run yet
Run it before you trust it. Nothing has run yet: the code was read, the server was not. `vet-skills try` runs this exact version in the honeypot in about a minute.
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 analysed it statically (a sandbox run is pending) on 2026-11-09 and scored it 58/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Base64 encoding combined with network call; document.cookie access. Summary: static analysis only — behavior not yet observed.
Behavior trace
Queued for honeypot run · static analysis onlyThis version has not been detonated yet. The score above counts behavior as unknown (50/100), so it cannot read Verified until the honeypot run completes and replaces this verdict.
Static findings
…lowAbsoluteUrls),i.params,i.paramsSerializer),E&&y.set("Authorization","Basic "+btoa((E.username||"")+":"+(E.password?unescape(encodeURIComponent(E.password)):"")));let R;if(D.isFormData(c)){if(ae.hasStandardBrowserEnv||ae.hasStandardBrows…Fix: Put hosts, commands and strings in plain source. Decoding at runtime looks identical to malware and costs points on its own.…&&y.push("path="+r),D.isString(o)&&y.push("domain="+o),d===!0&&y.push("secure"),document.cookie=y.join("; ")},read(i){const u=document.cookie.match(new RegExp("(^|;\\s*)("+i+"…Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.Cost to the agent
Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.
Known vulnerabilities
No advisories in OSV for mcp-sniffer@0.1.5 as of 5d ago. This is the package itself, not its dependencies.
What would make this Verified
22 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%- Unclaimed publisher≈ +8 on the totalClaim shivdeepak: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
- Obfuscated code≈ +5 on the totalRemove base64-assembled strings, eval of decoded text and minified blobs. Reviewers and scanners both treat unreadable code as hostile.
- Base64 encoding combined with network call≈ +4 on the totalPut hosts, commands and strings in plain source. Decoding at runtime looks identical to malware and costs points on its own.
- document.cookie access≈ +4 on the totalReplace encoded or assembled strings with plain literals and remove undeclared network calls.