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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.
64 critical findings reported by cisco-skill-scanner, agent-audit-kit, 43 of them in the installed artifact. The composite score alone does not reflect this — read the per-scanner reports below.
This artifact ships from 2 sources and their verdicts differ. The worst is github (Flagged). Installing from a cleaner source does not mean the others are safe — check the source you actually install from.
github: https://github.com/farchanjo/substrate, 161 findings
Choose your runtime: the CLI writes the mcpServers config entry for that target.
nerlo install --target claude-code -- substrate
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.
v2.0.11
70 findings · 13.0s
v0.3.74
89 findings · 8.3s
v0.2.0
0 findings · 3.8s
v0.2.0
2 findings · 3.8s
v0.1.0
0 findings · 8.3s
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
No report in this scan: govulncheck, osv-scanner, trivy, trivy_image.
2 scans on record. Every scan's full results are retained immutably for 24 months.
| Completed | Composite | Change | Scanners | Status |
|---|---|---|---|---|
| Oct 4, 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: complete | rejected |
| Aug 10, 2026 | Scan Halted | — | agentshield ·n/a: not applicablecisco-skill-scanner: completeagent-audit-kit: completenerlo-behavioral: completenerlo-install-instruction: completecapslock ·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 161 findings across every scanner that examined this package. 21 of 64 findings rated critical by their scanner were among the dismissals.
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.
52 Documentation or example — The match is in documentation or sample code, confirmed by our own check to be outside the installed artifact.
Rules: YARA_credential_harvesting_generic, YARA_code_execution_generic, opt.nerlo-rules.nerlo-install-zero-width-in-text and 5 more · Files: /repo/doc/arch/specs/features/filesystem-query/fs-stat-symlink-escape-blocked.feature, /repo/doc/arch/specs/features/text-processing/text-head-happy-path.feature, /repo/doc/arch/adr/0056-subprocess-supervisor-semantics.md and 22 more · reported by cisco-skill-scanner, nerlo-install-instruction
28 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-001 · Files: AGENTS.md, CLAUDE.md · reported by agent-audit-kit
17 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: AAK-TAINT-002 · Files: crates/substrate-mcp-server/tests/steps/cross_cutting.rs, crates/substrate-mcp-server/tests/steps/process.rs, crates/substrate-mcp-server/tests/steps/launch/milestone2.rs and 3 more · reported by agent-audit-kit
4 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: HIDDEN_DATA_FILE · Files: /repo/doc/arch/.vale.ini, /repo/doc/arch/.specconfig.yml · 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.
43 AAK-TAINT-002
Files: crates/substrate-policy/src/linux/mod.rs, crates/substrate-config/src/loader.rs, crates/substrate-process/src/stats.rs and 7 more · reported by agent-audit-kit
7 HIDDEN_DATA_FILE
Files: /repo/.specify/config.toml, /repo/.cargo/config.toml, /repo/.gitlab-ci.yml and 4 more · reported by cisco-skill-scanner
3 MANIFEST_MISSING_LICENSE
Files: /repo/SKILL.md, /repo/tools/SKILL.md, /repo/.githooks/SKILL.md · reported by cisco-skill-scanner
3 SOCIAL_ENG_VAGUE_DESCRIPTION
Files: /repo/SKILL.md, /repo/tools/SKILL.md, /repo/.githooks/SKILL.md · reported by cisco-skill-scanner
1 AAK-SUPPLY-005
Files: Cargo.lock · reported by agent-audit-kit
1 EXCESSIVE_FILE_COUNT
Critical shell execution and file write capabilities detected.
The artifact includes critical findings related to shell execution and file system operations. Specifically, rule AAK-TAINT-002 indicates potential for untrusted input to influence shell commands or file writes in `crates/substrate-config/src/loader.rs`, `crates/substrate-policy/src/linux/mod.rs`, and `crates/substrate-process/src/stats.rs`. Additionally, the artifact has a medium severity finding for a file magic mismatch and low severity findings for hidden data files and an excessive file count. These findings warrant careful review before installation.
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 FILE_MAGIC_MISMATCH
Files: /repo/llms.txt · reported by cisco-skill-scanner
1 MANIFEST_INVALID_NAME
Files: /repo/.githooks/SKILL.md · reported by cisco-skill-scanner
Showing 25 of 43; the rest are in the per-scanner reports above.