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MCP server wrapping dig, ping, mtr, whois and TLS/HTTP checks for on-demand network diagnostics
The publisher performed an authenticated act of publication — proving control of a namespace in the official MCP registry, or appearing in a first-party catalogue an operator curates. That establishes WHO published it. It is not a security finding, and attested artifacts carry Flagged verdicts too.
3 critical findings reported by cisco-skill-scanner, agent-audit-kit, 1 of them in the installed artifact. The composite score alone does not reflect this — read the per-scanner reports below.
github: https://github.com/shigechika/netdiag-mcp, 33 findings
Choose your runtime: the CLI writes the mcpServers config entry for that target.
nerlo install --target claude-code -- netdiag-mcp
Install respects the composite badge: Clean proceeds, Caution prompts for confirmation, and Flagged is refused. Write operations require an API token.
4 of 11 scanners examined this package. The rest do not apply to it — language, ecosystem and packaging decide which analyzers can say anything, and a scanner that cannot examine an artifact reports nothing rather than passing it.
v2.0.11
12 findings · 7.7s
v0.3.74
20 findings · 2.1s
v0.1.0
0 findings · 3.4s
v0.1.0
0 findings · 3.4s
v1.4.0
None of the entry points this scanner reads were found in this artifact. What each scanner covers
0 findings · 0.2s
vv0.3.2
No Go packages were found in this artifact. What each scanner covers
0 findings · 0.1s
v0.1.0
This scanner found nothing in this artifact that it assesses. What each scanner covers
0 findings · 0.9s
No report in this scan: govulncheck, osv-scanner, trivy, trivy_image.
1 scan on record. Every scan's full results are retained immutably for 24 months.
| Completed | Composite | Change | Scanners | Status |
|---|---|---|---|---|
| Aug 21, 2026 | Scan Halted | — | agentshield ·n/a: not applicablecisco-skill-scanner: completeagent-audit-kit: completenerlo-behavioral: completenerlo-install-instruction: completecapslock ·n/a: not applicablenerlo-multi-source ·n/a: not applicable | rejected |
Findings in files this artifact installs stand as reported; a model re-read the rest and said which ones it believes are false positives. This is a second opinion published beside the evidence, not a correction to it: the per-scanner reports above are unchanged, every dismissed finding is still listed there at its original severity, and the score and the Flagged badge are computed from those raw severities alone. Nothing below moved them.
Out of 32 findings across every scanner that examined this package. 2 of 3 findings rated critical by their scanner were among the dismissals.
Not reviewed is not the same as clean. Those 3 findings stand exactly as their scanners reported them, at full severity, as they would have without this review.
Two keys had to turn. The model had to name a reason from a fixed list of six, and a deterministic check of ours — over which files this artifact actually installs — had to independently agree. Anything it could not corroborate is in “not reviewed” above, at full severity.
6 Agent instruction file — The match is in a file that instructs an AI coding agent — a CLAUDE.md or similar. It is documentation of intent, and our own check confirmed it is not part of what gets installed.
Rules: AAK-AGENT-003, AAK-AGENT-001 · Files: CLAUDE.md, .github/copilot-instructions.md · reported by agent-audit-kit
6 Documentation or example — The match is in documentation or sample code, confirmed by our own check to be outside the installed artifact.
Rules: AAK-STDIO-001, SOCIAL_ENG_VAGUE_DESCRIPTION, MANIFEST_MISSING_LICENSE and 1 more · Files: scripts/smoke_test.py, /repo/.github/SKILL.md, /repo/docs/SKILL.md · reported by agent-audit-kit, cisco-skill-scanner
1 Test or fixture file — The match is in a test or fixture. Our own check confirmed the file is not part of what gets installed.
Rules: YARA_command_injection_generic · Files: /repo/tests/test_validate.py · reported by cisco-skill-scanner
These findings are in files this artifact installs and are not placeholder values. No false-positive basis can be corroborated for such a finding, so this review never dismisses one; they were not sent to the model and stand at their scanner's severity.
2 DATA_EXFIL_SOCKET_CONNECT
Files: /repo/netdiag_mcp/tools.py · reported by cisco-skill-scanner
1 AAK-DNS-REBIND-002
Files: pyproject.toml · reported by agent-audit-kit
1 AAK-MARKETPLACE-001
Files: .claude-plugin/marketplace.json · reported by agent-audit-kit
1 AAK-MCP-005
Files: plugin/.mcp.json · reported by agent-audit-kit
1 AAK-MCP-007
Files: plugin/.mcp.json · reported by agent-audit-kit
1 AAK-MCP-ATTEST-001
Files: plugin/.mcp.json · reported by agent-audit-kit
1
3 The model did not answer for these findings.
Rules: AAK-GHA-IMMUTABLE-001 · Files: .github/workflows/pr-gate.yml, .github/workflows/ai-review.yml, .github/workflows/dependabot-automerge.yml · reported by agent-audit-kit
Critical shell execution and secret exposure detected
The artifact includes code that allows shell execution, specifically identified in `scripts/smoke_harness.py`. This same script also exposes secrets, warranting immediate attention. Additionally, a DNS rebind vulnerability and a known SDK vulnerability are present in `pyproject.toml`.
Concern level assessed by the review: Critical. This is the review's scale, not the registry badge.
Reviewed by gemini-2.5-flash. The model sees the findings, not your code, and cannot change a score.
Files: pyproject.toml · reported by agent-audit-kit
1 AAK-OAUTH-3P-001
Files: pyproject.toml · reported by agent-audit-kit
1 AAK-SEC-MD-001
Files: SECURITY.md · reported by agent-audit-kit
1 AAK-SECRET-004
Files: scripts/smoke_harness.py · reported by agent-audit-kit
1 AAK-STDIO-001
Files: scripts/smoke_harness.py · reported by agent-audit-kit
1 HIDDEN_DATA_FILE
Files: /repo/.release-please-manifest.json · reported by cisco-skill-scanner
1 MANIFEST_MISSING_LICENSE
Files: /repo/SKILL.md · reported by cisco-skill-scanner
1 SOCIAL_ENG_VAGUE_DESCRIPTION
Files: /repo/SKILL.md · reported by cisco-skill-scanner
1 TOOL_ABUSE_UNDECLARED_NETWORK
Files: /repo/repo/CHANGELOG.md · reported by cisco-skill-scanner