nextjs-seo-audit-mcp@0.1.2
VERIFIED· startup onlyPublisher claims: "Enables a coding agent to audit a deployed Next.js or Vercel site for SEO and indexing problems such as redirects, robots.txt, sitemaps, canonicals and noindex, returning the CLI's findings as JSON. It also explains issue codes and lists available checks, all read-only over stdio." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Coverage
Startup only; authenticated tool behavior not tested.- Tested
- server startup over stdio (initialize sent) · every file read, file written and host contacted by what ran
- Not tested
- the tool list (the server exited before answering) · what the tools do when called with real credentials
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 google.com, bing.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
- the tool list (the server exited before answering) · what the tools do when called with real credentials
Connect it under the guard. Startup only; authenticated tool behavior not tested. The code names no credential variable; 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; startup only; authenticated tool behavior not tested) on 2026-11-11 and scored it 85/100 (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 · 24 s · 2 scenarios · 0 deviationsStatic findings
run: npx -y "$INSPECTOR" --cli node dist/index.js --method tools/list --strictFix: Pin versions and sources; vendor anything fetched at install time.run: npx -y "$INSPECTOR" --cli node dist/index.js --method tools/call --tool-name explain_finding --tool-arg code=NOINDEX_DETECTED -qFix: Pin versions and sources; vendor anything fetched at install time.expect(text).not.toMatch(/[\u0007]/);Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.const result = await client.callTool({ name: 'explain_finding', arguments: { code: 'X\u0007Y' } });Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.npx -y "$INSPECTOR" --cli node dist/index.js --method tools/call --tool-name explain_finding --tool-arg code=NOPE -qFix: Pin versions and sources; vendor anything fetched at install time.* Puts the same McpServer on Streamable HTTP at 127.0.0.1 on a random port, so the officialFix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.'http://169.254.169.254/latest/meta-data/',Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.'http://10.1.2.3/',Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.'http://100.64.0.1/',Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.expect((await checkTarget('https://user:[email protected]/')).ok).toBe(false);Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.'http://172.16.0.1/',Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.npx -y "$CONFORMANCE" server --url "$MCP_URL" --scenario "$scenario"Fix: Pin versions and sources; vendor anything fetched at install time.// console.log pin in index.ts has to send to stderr instead.Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.it.each(['ftp://example.com/', 'file:///etc/passwd', 'javascript:alert(1)', 'not a url'])(Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.'http://100.64.0.1/',Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.'http://0x7f.1/',Fix: Put hosts, commands and strings in plain source. Decoding at runtime looks identical to malware and costs points on its own.'http://192.168.1.1/',Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.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
Vulnerability advisories (OSV) cover npm and PyPI packages; this registry has no advisory database.