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Failure-first backend engineering rules — contracts, resiliency, operability, security, testing. Use when building or changing an API or backend service — HTTP endpoints, workers, schedulers, or the service behind a UI — and when consuming or integrating third-party APIs (clients, SDK wrappers, sync jobs, webhooks). This skill owns the backend layer at any size; for the UI layer, use frontend-craft, and when the work spans layers end to end — UI plus the service behind it, or a spawned builder taking a feature through tests and verification — use sde-fullstack.
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.
8 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 -- 'latent-sre/sde-agents (backend-craft)'
Manual alternative: copy the skill folder into ~/.claude/skills/ so Claude Code loads it on next launch.
cp -r -- 'latent-sre/sde-agents (backend-craft)' ~/.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
0 findings · 0.5s
v2.0.11
289 findings · 28.4s
v0.3.74
21 findings · 28.5s
v0.1.0
0 findings · 8.7s
v0.1.0
8 findings · 8.7s
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 20, 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 318 findings across every scanner that examined this package. None of the 8 findings rated critical by their scanner were dismissed.
Not reviewed is not the same as clean. Those 144 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.
44 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: MANIFEST_MISSING_LICENSE · Files: /repo/tests/fixtures/unknown-tool/skills/craft/SKILL.md, /repo/tests/fixtures/evidence-drift/skills/craft/SKILL.md, /repo/tests/fixtures/missing-packet/skills/craft/SKILL.md and 41 more · reported by cisco-skill-scanner
1 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: opt.nerlo-rules.nerlo-install-shell-inline-command · Files: /repo/.github/agents/homelab-platform.agent.md · reported by nerlo-install-instruction
1 Documentation or example — The match is in documentation or sample code, confirmed by our own check to be outside the installed artifact.
Rules: MANIFEST_INVALID_NAME · Files: /repo/.github/SKILL.md · reported by cisco-skill-scanner
The model could have called any of these a false positive and did not.
125 MANIFEST_MISSING_LICENSE
Files: /repo/plugins/sde-agents/skills/self-improve-loop/SKILL.md, /repo/plugins/sde-agents/skills/root-cause/SKILL.md, /repo/plugins/sde-agents/skills/lab-audit/SKILL.md and 122 more · reported by cisco-skill-scanner
2 HIDDEN_DATA_FILE
Files: /repo/.agents/plugins/marketplace.json, /repo/plugins/sde-agents/.codex-plugin/plugin.json · reported by cisco-skill-scanner
1 EXCESSIVE_FILE_COUNT
Files: /repo/evals/. · reported by cisco-skill-scanner
142 The review call did not complete.
Rules: YARA_coercive_injection_generic, COMMAND_INJECTION_EVAL, YARA_credential_harvesting_generic and 13 more · Files: /repo/plugins/sde-agents/skills/code-craft/references/SKILL.md, /repo/skills/code-craft/references/SKILL.md, /repo/platforms/copilot/skills/code-craft/references/SKILL.md and 119 more · reported by cisco-skill-scanner, nerlo-install-instruction, agent-audit-kit
1 The model did not answer for these findings.
Rules: MANIFEST_INVALID_NAME · Files: /repo/.github/ISSUE_TEMPLATE/SKILL.md · reported by cisco-skill-scanner
1 The model called these false positives and our own check did not agree, so the dismissal was refused.
Rules: opt.nerlo-rules.nerlo-install-shell-inline-command · Files: /repo/agents/homelab-platform.md · reported by nerlo-install-instruction
Artifact enables shell execution and credential access.
The artifact contains critical findings for potential shell execution via command injection in Python scripts like `eval_routing.py` and `validate_fleet.py`. Credential harvesting is detected in `evals/behavioral/contracts.json`. Other critical findings from 'bearer' are present in several Python scripts, suggesting broader security risks. High severity findings also indicate potential secret exposure in `scripts/eval_routing.py` and `scripts/fleet_records.py`.
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.
Showing 15 of 15; the rest are in the per-scanner reports above.