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Claude Skills are markdown + scripts loaded into Claude Code; scanned with the same pipeline.
We found this by crawling public sources and nobody has attested to it. That is how most of the registry gets here, and it is not a mark against the artifact — it only means no authenticated act of publication is on record. An artifact can be the vendor's own and still appear here.
3 critical findings reported by cisco-skill-scanner. The composite score alone does not reflect this — read the per-scanner reports below.
Claude Skills install to a single target, no runtime picker.
nerlo install -- separator-control-challenge
Manual alternative: copy the skill folder into ~/.claude/skills/ so Claude Code loads it on next launch.
cp -r -- separator-control-challenge ~/.claude/skills/
Install respects the composite badge: Clean proceeds, Caution prompts for confirmation, and Flagged is refused. Write operations require an API token.
5 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.
v1.4.0
35 findings · 1.1s
v2.0.11
288 findings · 13.4s
v0.3.74
30 findings · 7.8s
v0.1.0
1 finding · 4.5s
v0.1.0
18 findings · 4.5s
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 · 1.6s
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 22, 2026 | Scan Halted | — | agentshield: completecisco-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 372 findings across every scanner that examined this package. None of the 3 findings rated critical by their scanner were dismissed.
Not reviewed is not the same as clean. Those 29 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.
38 Documentation or example — The match is in documentation or sample code, confirmed by our own check to be outside the installed artifact.
Rules: AAK-HEALTHCARE-AI-004, SOCIAL_ENG_VAGUE_DESCRIPTION, MANIFEST_MISSING_LICENSE and 2 more · Files: docs/local-model-runtime-config.md, .github/skills-external/brainstorming/SKILL.md, /repo/.github/SKILL.md and 20 more · reported by agent-audit-kit, cisco-skill-scanner, nerlo-install-instruction
23 CI or editor configuration — The match is in build, CI or editor configuration, confirmed by our own check to be outside the installed artifact.
Rules: DATA_EXFIL_JS_FS_ACCESS, LOW_ANALYZABILITY, AAK-GHA-IMMUTABLE-001 · Files: /repo/.github/skills-external/brainstorming/scripts/server.cjs, /repo/.github/skills-external/brainstorming, .github/workflows/docs-quality-guardrails.yml · reported by cisco-skill-scanner, agent-audit-kit
7 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: agents-comment-injection-4466, AAK-AGENT-005 · Files: CLAUDE.md, AGENTS.md, .github/copilot-instructions.md · reported by agentshield, agent-audit-kit
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.
110 MANIFEST_MISSING_LICENSE
Files: /repo/.codex/skills/validate_module_structure/SKILL.md, /repo/.codex/skills/brainstorming/SKILL.md, /repo/.codex/skills/plan_and_execute_feature/SKILL.md and 107 more · reported by cisco-skill-scanner
52 MANIFEST_INVALID_NAME
Files: /repo/.codex/skills/create_mle_agent_package/SKILL.md, /repo/.claude/skills/create_mle_agent_package/SKILL.md, /repo/.opencode/skills/create_mle_agent_package/SKILL.md and 49 more · reported by cisco-skill-scanner
46 HIDDEN_DATA_FILE
Files: /repo/.agents/skills/using-git-worktrees/SKILL.md, /repo/.agents/skills/source-command-verify/SKILL.md, /repo/.agents/skills/generate_e2e_tests/SKILL.md and 43 more · reported by cisco-skill-scanner
14 DATA_EXFIL_JS_FS_ACCESS
Files: /repo/.agents/skills/brainstorming/scripts/server.cjs · reported by cisco-skill-scanner
9 opt.nerlo-rules.nerlo-install-run-bundled-artifact
Files: /repo/.agents/skills/brainstorming/scripts/start-server.sh, /repo/.agents/skills/brainstorming/visual-companion.md
29 The model called these false positives and our own check did not agree, so the dismissal was refused.
Rules: skills-missing-governance-.claude/commands/plan.md, skills-missing-governance-.claude/commands/orchestrate.md, skills-missing-governance-commands/adr.md and 26 more · Files: .claude/commands/plan.md, .claude/commands/orchestrate.md, commands/adr.md and 12 more · reported by agentshield, cisco-skill-scanner
Critical path traversal and data exfiltration risks identified.
The artifact contains critical path traversal vulnerabilities in skill definition files, which could allow access to restricted directories. Multiple high-severity findings indicate potential data exfiltration via JavaScript file system access in brainstorming scripts. Additionally, hidden executable scripts are present, and sensitive data could be exposed through network egress.
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.
4 AAK-HEALTHCARE-AI-004
Files: .codex/skills/brainstorming/SKILL.md, .claude/skills/brainstorming/SKILL.md, .opencode/skills/brainstorming/SKILL.md and 1 more · reported by agent-audit-kit
4 AAK-MCP-005
Files: .mcp.json, .mcp.example.json · reported by agent-audit-kit
4 AAK-MCP-007
Files: .mcp.json, .mcp.example.json · reported by agent-audit-kit
4 AAK-MCP-ATTEST-001
Files: .mcp.json, .mcp.example.json · reported by agent-audit-kit
4 HIDDEN_EXECUTABLE_SCRIPT
Files: /repo/.agents/skills/brainstorming/scripts/start-server.sh, /repo/.opencode/plugin/verify-gate.ts, /repo/.agents/skills/brainstorming/scripts/stop-server.sh and 1 more · reported by cisco-skill-scanner
4 SOCIAL_ENG_VAGUE_DESCRIPTION
Files: /repo/SKILL.md, /repo/memory/SKILL.md, /repo/.claude/commands/SKILL.md and 1 more · reported by cisco-skill-scanner
3 PATH_TRAVERSAL_ATTEMPT
Files: /repo/.codex/skills/writing-clearly-and-concisely/SKILL.md, /repo/.claude/skills/writing-clearly-and-concisely/SKILL.md, /repo/.opencode/skills/writing-clearly-and-concisely/SKILL.md · reported by cisco-skill-scanner
2 AAK-SUPPLY-001
Files: .mcp.json · reported by agent-audit-kit
2 hooks-logging-disabled-377
Files: hooks/stop_nudge.sh, .claude/hooks/stop_nudge.sh · reported by agentshield
2 hooks-no-pretooluse
Files: settings.json, .claude/settings.json · reported by agentshield
2 LOW_ANALYZABILITY
Files: /repo, /repo/.agents/skills/brainstorming · reported by cisco-skill-scanner
2 permissions-no-block
Files: settings.json, .claude/settings.json · reported by agentshield
2 PIPELINE_TAINT_FLOW
Files: /repo/.env.example · reported by cisco-skill-scanner
1 AAK-LEGAL-002
Files: package.json · reported by agent-audit-kit
1 AAK-SUPPLY-005
Files: package-lock.json · reported by agent-audit-kit
1 AAK-TRUST-007
Files: .claude/settings.json · reported by agent-audit-kit
1 EXCESSIVE_FILE_COUNT
Files: /repo/. · reported by cisco-skill-scanner
1 opt.nerlo-rules.nerlo-py-secret-to-network-egress
Files: /repo/scripts/toolbelt_doctor.py · reported by nerlo-behavioral
Showing 25 of 27; the rest are in the per-scanner reports above.