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Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend.
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.
1 critical finding reported by 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 -- 'amilos/agentic-coding-101-marketplace (api-and-interface-design)'
Manual alternative: copy the skill folder into ~/.claude/skills/ so Claude Code loads it on next launch.
cp -r -- 'amilos/agentic-coding-101-marketplace (api-and-interface-design)' ~/.claude/skills/
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
89 findings · 14.2s
v0.3.74
3 findings · 3.2s
v0.1.0
0 findings · 5.2s
v0.1.0
0 findings · 5.2s
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 · 0.2s
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 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 92 findings across every scanner that examined this package. None of the 1 finding 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 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: AAK-MARKETPLACE-001 · Files: .github/plugin/marketplace.json · reported by 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.
72 MANIFEST_MISSING_LICENSE
Files: /repo/plugins/mattpocock-skills/skills/productivity/writing-great-skills/SKILL.md, /repo/plugins/mattpocock-skills/skills/productivity/grilling/SKILL.md, /repo/plugins/mattpocock-skills/skills/productivity/grill-me/SKILL.md and 69 more · reported by cisco-skill-scanner
9 SOCIAL_ENG_VAGUE_DESCRIPTION
Files: /repo/SKILL.md, /repo/plugins/mattpocock-skills/SKILL.md, /repo/plugins/addyosmani-agent-skills/SKILL.md and 6 more · reported by cisco-skill-scanner
4 FILE_MAGIC_MISMATCH
Files: /repo/plugins/mattpocock-skills/skills/deprecated/request-refactor-plan/agents/openai.yaml · reported by cisco-skill-scanner
2 EXCESSIVE_FILE_COUNT
Files: /repo/plugins/mattpocock-skills/., /repo/. · reported by cisco-skill-scanner
1 AAK-SKILL-003
Files: plugins/addyosmani-agent-skills/skills/security-and-hardening/SKILL.md · reported by agent-audit-kit
1 LOW_ANALYZABILITY
Files: /repo/plugins/mattpocock-skills/skills/in-progress/setup-ts-deep-modules · reported by cisco-skill-scanner
Critical security finding and prompt injection risk identified
A critical security finding is present in `plugins/addyosmani-agent-skills/skills/security-and-hardening/SKILL.md`. Additionally, a high-severity prompt injection vulnerability exists in `plugins/addyosmani-agent-skills/skills/browser-testing-with-devtools/SKILL.md`, which could allow instructions to be bypassed. The artifact also exhibits low analyzability in `plugins/mattpocock-skills/skills/in-progress/setup-ts-deep-modules`, hindering comprehensive security assessment.
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.
1 PROMPT_INJECTION_IGNORE_INSTRUCTIONS
Files: /repo/plugins/addyosmani-agent-skills/skills/browser-testing-with-devtools/SKILL.md · reported by cisco-skill-scanner