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Live workspace context engine for AI assistants — resolve before context.
The publisher performed an authenticated act of publication — proving control of a namespace in the official MCP registry, or appearing in a first-party catalogue an operator curates. That establishes WHO published it. It is not a security finding, and attested artifacts carry Flagged verdicts too.
40 critical findings reported by cisco-skill-scanner, agent-audit-kit, 22 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/Perseus-Computing-LLC/perseus, 1190 findings
Choose your runtime: the CLI writes the mcpServers config entry for that target.
nerlo install --target claude-code -- perseus-ctx
Install respects the composite badge: Clean proceeds, Caution prompts for confirmation, and Flagged is refused. Write operations require an API token.
6 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
3 findings · 0.6s
v2.0.11
1080 findings · 48.3s
v0.3.26
75 findings · 55.6s
v0.1.0
13 findings · 63.3s
v0.1.0
19 findings · 63.4s
v0.1.0
0 findings · 28.4s
No report in this scan: capslock, 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 |
|---|---|---|---|---|
| Aug 3, 2026 | Scan Halted | — | agentshield: completecisco-skill-scanner: completeagent-audit-kit: completenerlo-behavioral: completenerlo-install-instruction: completenerlo-multi-source: complete | rejected |
| Aug 1, 2026 | Scan Halted | — | agentshield: completecisco-skill-scanner: completeagent-audit-kit: completenerlo-behavioral: completenerlo-install-instruction: completenerlo-multi-source: complete | 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 1,190 findings across every scanner that examined this package. 17 of 40 findings rated critical by their scanner were among the dismissals.
Not reviewed is not the same as clean. Those 3 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.
90 Documentation or example — The match is in documentation or sample code, confirmed by our own check to be outside the installed artifact.
Rules: opt.nerlo-rules.nerlo-install-pipe-to-shell, AAK-HEALTHCARE-AI-005, AAK-HEALTHCARE-AI-004 and 4 more · Files: /repo/docs/memory-backend-comparison.md, /repo/docs/security-review-2026-07-05.md, docs/use-cases.md and 43 more · reported by nerlo-install-instruction, agent-audit-kit, cisco-skill-scanner
67 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-SECRET-003, SECRET_GITHUB_TOKEN, AAK-SECRET-008 and 13 more · Files: tests/test_audit_log.py, /repo/tests/test_bugfix_695_knows_serve.py, tests/test_bugfix_695_knows_serve.py and 21 more · reported by agent-audit-kit, cisco-skill-scanner
5 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 · 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: YARA_credential_harvesting_generic, AAK-GHA-IMMUTABLE-001, MANIFEST_INVALID_NAME · Files: /repo/.github/workflows/pr-pilot.yml, .github/workflows/publish.yml, /repo/.github/SKILL.md · reported by cisco-skill-scanner, 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.
480 HIDDEN_DATA_FILE
Files: /repo/.perseus/context.md, /repo/benchmark/gauntlet/gauntlet_role_profiles/.perseus/context.md, /repo/benchmark/gauntlet/gauntlet_role_profiles/performance_engineer/.perseus/context.md and 111 more · reported by cisco-skill-scanner
121 MANIFEST_MISSING_LICENSE
Files: /repo/SKILL.md, /repo/skills/memory-cleanup/SKILL.md, /repo/skills/pir-action-tracker/SKILL.md and 118 more · reported by cisco-skill-scanner
118 SOCIAL_ENG_VAGUE_DESCRIPTION
Files: /repo/reddit-variants/SKILL.md, /repo/outreach/SKILL.md, /repo/bench/SKILL.md and 115 more · reported by cisco-skill-scanner
61 MANIFEST_INVALID_NAME
Files: /repo/.perseus/SKILL.md, /repo/benchmark/gauntlet/gauntlet_role_profiles/.perseus/SKILL.md, /repo/benchmark/gauntlet/gauntlet_role_profiles/performance_engineer/.perseus/SKILL.md and 58 more · reported by cisco-skill-scanner
55 DATA_EXFIL_NETWORK_REQUESTS
Files: /repo/bench/tier2/mcp_sse_auth_poc.py, /repo/benchmark/eval/semantic_judge.py, /repo/benchmark/gauntlet/gauntlet_orchestrator.py and 7 more
3 The model called these false positives and our own check did not agree, so the dismissal was refused.
Rules: HIDDEN_DATA_FILE · Files: /repo/benchmark/enterprise/.hermes.md.example · reported by cisco-skill-scanner
Artifact contains critical shell execution and credential access risks.
The artifact includes multiple critical command injection vulnerabilities, allowing shell execution via `eval`, `os.system`, and `child_process` in various files, including `/repo/integrations/vscode/extension.js` and Python scripts. It also exhibits high-severity capabilities for network egress of secrets from Python code and dynamic shell execution. These findings indicate the artifact can execute arbitrary commands and transmit sensitive data.
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.
44 FILE_MAGIC_MISMATCH
Files: /repo/benchmark/gauntlet/gauntlet_role_profiles/accessibility_auditor/.perseus/context.md, /repo/benchmark/gauntlet/gauntlet_role_profiles/platform-engineer.md, /repo/benchmark/gauntlet/gauntlet_role_profiles/mobile-developer.md and 9 more · reported by cisco-skill-scanner
26 AAK-LEGAL-002
Files: benchmark/gauntlet/gauntlet_role_profiles/package.json, benchmark/gauntlet/gauntlet_role_profiles/performance_engineer/package.json, benchmark/gauntlet/gauntlet_role_profiles/database_admin/package.json and 23 more · reported by agent-audit-kit
11 RESOURCE_ABUSE_INFINITE_LOOP
Files: /repo/benchmark/real_vault_density/run.py, /repo/perseus.py, /repo/src/perseus/directives/research.py and 3 more · reported by cisco-skill-scanner
9 COMMAND_INJECTION_EVAL
Files: /repo/integrations/vscode/extension.js · reported by cisco-skill-scanner
7 opt.nerlo-rules.nerlo-install-pipe-to-shell
Files: /repo/CHANGELOG.md, /repo/QUICKSTART.md, /repo/README.md and 2 more · reported by nerlo-install-instruction
6 COMMAND_INJECTION_SHELL_TRUE
Files: /repo/benchmark/enterprise/setup.py, /repo/bench/tier2/query_shell_injection_poc.py · reported by cisco-skill-scanner
6 opt.nerlo-rules.nerlo-py-secret-to-network-egress
Files: /repo/bench/tier2/mcp_sse_auth_poc.py, /repo/benchmark/eval/semantic_judge.py, /repo/benchmark/gauntlet/gauntlet_orchestrator.py and 3 more · reported by nerlo-behavioral
6 TOOL_ABUSE_UNDECLARED_NETWORK
Files: /repo/repo/SKILL.md, /repo/bench/repo/bench/bench_context.md, /repo/benchmark/repo/benchmark/COLD-START-BENCHMARK-2026-05-23.md and 3 more · reported by cisco-skill-scanner
5 AAK-TASKS-003
Files: bench/scripts/compute_metrics.py, src/perseus/audit.py, src/perseus/cli.py and 2 more · reported by agent-audit-kit
5 COMMAND_INJECTION_OS_SYSTEM
Files: /repo/benchmark/gauntlet/gauntlet_adversarial.py, /repo/perseus.py, /repo/src/perseus/promptsize.py · reported by cisco-skill-scanner
5 opt.nerlo-rules.nerlo-install-run-bundled-artifact
Files: /repo/benchmark/heavy/setup_mixed.py, /repo/requirements.txt, /repo/tasks/task-67-render-pipeline-hooks.md · reported by nerlo-install-instruction
5 opt.nerlo-rules.nerlo-py-dynamic-exec
Files: /repo/benchmark/enterprise/setup.py, /repo/src/perseus/directives/agent.py, /repo/src/perseus/directives/services.py and 2 more · reported by nerlo-behavioral
5 YARA_command_injection_generic
Files: /repo/benchmark/gauntlet/gauntlet_role_profiles/performance-engineer.md, /repo/benchmark/gauntlet/gauntlet_role_profiles/SKILL.md · reported by cisco-skill-scanner
5 YARA_prompt_injection_unicode_steganography
Files: /repo/benchmark/infographic/perseus-titan.png, /repo/assets/og/perseus-computing-hero.png · reported by cisco-skill-scanner
4 EXCESSIVE_FILE_COUNT
Files: /repo/benchmark/gauntlet/gauntlet_role_profiles/., /repo/benchmark/., /repo/. and 1 more · reported by cisco-skill-scanner
4 opt.nerlo-rules.nerlo-install-fetch-raw-then-run
Files: /repo/QUICKSTART.md, /repo/README.md, /repo/SETUP-GUIDE.md · reported by nerlo-install-instruction
4 PIPELINE_TAINT_FLOW
Files: /repo/scripts/bootstrap.sh, /repo/QUICKSTART.md, /repo/README.md and 1 more · reported by cisco-skill-scanner
4 YARA_system_manipulation_generic
Files: /repo/benchmark/gauntlet/gauntlet_role_profiles/performance-engineer.md · reported by cisco-skill-scanner
3 AAK-IPI-WILD-CORPUS-001
Files: perseus.py, src/perseus/vault_index.py, benchmark/gauntlet/v2/gauntlet_v2_adversarial.py · reported by agent-audit-kit
3 AAK-SPLUNK-TOKLOG-001
Files: perseus.py, bench/tier2/mcp_sse_auth_poc.py, src/perseus/mcp.py · reported by agent-audit-kit
3 COMMAND_INJECTION_JS_CHILD_PROCESS
Files: /repo/integrations/vscode/extension.js · reported by cisco-skill-scanner
2 AAK-HEALTHCARE-AI-004
Files: benchmark/heavy/BENCHMARK-ADVERSARIAL.md, benchmark/real_vault_density/sanitized_corpus.json · reported by agent-audit-kit
2 LOW_ANALYZABILITY
Files: /repo/editors/vscode, /repo/integrations/vscode · reported by cisco-skill-scanner
2 opt.nerlo-rules.nerlo-dynamic-exec
Files: /repo/integrations/vscode/extension.js · reported by nerlo-behavioral
1 AAK-OAUTH-3P-001
Files: requirements.txt · reported by agent-audit-kit
1 AAK-SECRET-004
Files: benchmark/gauntlet/gauntlet_orchestrator.py · reported by agent-audit-kit
1 AAK-SUPPLY-004
Files: pyproject.toml · reported by agent-audit-kit
1 COMPOUND_FIND_EXEC
Files: /repo/scripts/release.sh · reported by cisco-skill-scanner
1 DATA_EXFIL_JS_NETWORK
Files: /repo/assets/perseus.js · reported by cisco-skill-scanner
1 FIND_EXEC_PATTERN
Files: /repo/scripts/release.sh · reported by cisco-skill-scanner
1 hooks-no-pretooluse
Files: settings.json · reported by agentshield
1 hooks-no-stop-hooks
Files: settings.json · reported by agentshield
1 permissions-no-block
Files: settings.json · reported by agentshield
1 PROMPT_INJECTION_IGNORE_INSTRUCTIONS
Files: /repo/bench/tier2/SKILL.md · reported by cisco-skill-scanner
Showing 25 of 79; the rest are in the per-scanner reports above.