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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.
4 critical findings reported by cisco-skill-scanner, agent-audit-kit. 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 -- claude-agent-sdk-coding-agent
Manual alternative: copy the skill folder into ~/.claude/skills/ so Claude Code loads it on next launch.
cp -r -- claude-agent-sdk-coding-agent ~/.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
12 findings · 1.5s
v2.0.11
74 findings · 30.3s
v0.3.74
5 findings · 16.6s
v0.1.0
1 finding · 9.1s
v0.1.0
1 finding · 9.1s
vv0.3.2
No Go packages were found in this artifact. What each scanner covers
0 findings · 0.2s
v0.1.0
This scanner found nothing in this artifact that it assesses. What each scanner covers
0 findings · 1.1s
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 93 findings across every scanner that examined this package. None of the 4 findings rated critical by their scanner were dismissed.
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.
2 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: SOCIAL_ENG_VAGUE_DESCRIPTION, MANIFEST_MISSING_LICENSE · Files: /repo/.claude/skills/internal-comms/examples/SKILL.md · 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.
19 MANIFEST_MISSING_LICENSE
Files: /repo/.claude/skills/skill-creator/SKILL.md, /repo/.claude/skills/template/SKILL.md, /repo/.claude/skills/doc-coauthoring/SKILL.md and 16 more · reported by cisco-skill-scanner
18 HIDDEN_DATA_FILE
Files: /repo/.claude/skills/skill-creator/.openskills.json, /repo/.claude/skills/pdf/.openskills.json, /repo/.claude/skills/slack-gif-creator/.openskills.json and 15 more · reported by cisco-skill-scanner
16 SOCIAL_ENG_VAGUE_DESCRIPTION
Files: /repo/SKILL.md, /repo/.claude/skills/skill-creator/references/SKILL.md, /repo/.claude/skills/skill-creator/agents/SKILL.md and 13 more · reported by cisco-skill-scanner
4 LOW_ANALYZABILITY
Files: /repo/.claude/skills/web-artifacts-builder, /repo/.claude/skills/algorithmic-art, /repo/.claude/skills/theme-factory and 1 more · reported by cisco-skill-scanner
4 UNANALYZABLE_BINARY
Files: /repo/.claude/skills/web-artifacts-builder/scripts/shadcn-components.tar.gz, /repo/.claude/skills/theme-factory/theme-showcase.pdf · reported by cisco-skill-scanner
2 ARCHIVE_FILE_DETECTED
Files:
Artifact contains critical command injection and DNS rebinding vulnerabilities.
The artifact includes capabilities for shell execution via command injection in `gaia/artifacts.ts`. It also presents a critical DNS rebinding vulnerability in `connections.py`, which could facilitate network egress or bypass security controls. Further findings indicate potential for coercive injection and dynamic code execution in various scripts.
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.
2 COMMAND_INJECTION_JS_CHILD_PROCESS
Files: /repo/gaia/artifacts.ts · reported by cisco-skill-scanner
2 DATA_EXFIL_JS_NETWORK
Files: /repo/gaia/dataset.ts · reported by cisco-skill-scanner
2 hooks-no-pretooluse
Files: settings.json, .claude/settings.json · reported by agentshield
2 permissions-missing-deny->-/dev/
Files: settings.json, .claude/settings.json · reported by agentshield
2 permissions-missing-deny-chmod-777
Files: settings.json, .claude/settings.json · reported by agentshield
2 permissions-missing-deny-rm--rf
Files: settings.json, .claude/settings.json · reported by agentshield
2 permissions-missing-deny-ssh
Files: settings.json, .claude/settings.json · reported by agentshield
2 permissions-missing-deny-sudo
Files: settings.json, .claude/settings.json · reported by agentshield
2 YARA_code_execution_generic
Files: /repo/.claude/skills/docx/scripts/accept_changes.py · reported by cisco-skill-scanner
1 AAK-ANTHROPIC-SDK-001
Files: .claude/skills/mcp-builder/scripts/connections.py · reported by agent-audit-kit
1 AAK-DNS-REBIND-001
Files: .claude/skills/mcp-builder/scripts/connections.py · reported by agent-audit-kit
1 AAK-LEGAL-002
Files: package.json · reported by agent-audit-kit
1 AAK-MCP-SDK-CVE-2026-52869-001
Files: .claude/skills/mcp-builder/scripts/requirements.txt · reported by agent-audit-kit
1 AAK-SUPPLY-004
Files: package.json · reported by agent-audit-kit
1 EXCESSIVE_FILE_COUNT
Files: /repo/. · reported by cisco-skill-scanner
1 opt.nerlo-rules.nerlo-install-run-bundled-artifact
Files: /repo/.claude/skills/webapp-testing/scripts/with_server.py · reported by nerlo-install-instruction
1 opt.nerlo-rules.nerlo-py-dynamic-exec
Files: /repo/.claude/skills/webapp-testing/scripts/with_server.py · reported by nerlo-behavioral
1 SOCIAL_ENG_ANTHROPIC_IMPERSONATION
Files: /repo/.claude/skills/claude-api/SKILL.md · reported by cisco-skill-scanner
1 YARA_coercive_injection_generic
Files: /repo/.claude/skills/claude-api/typescript/claude-api/SKILL.md · reported by cisco-skill-scanner