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Base package for European electronic invoicing MCP servers
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.
github: https://github.com/cmendezs/mcp-einvoicing-core, 36 findings
Choose your runtime: the CLI writes the mcpServers config entry for that target.
nerlo install --target claude-code -- mcp-einvoicing-core
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
21 findings · 16.3s
v0.3.26
5 findings · 5.2s
v0.1.0
1 finding · 4.6s
v0.1.0
0 findings · 4.7s
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
v0.71.0
No dependency manifest or lockfile was found in this artifact. What each scanner covers
0 findings · 0.2s
v2.3.8
No dependency manifest or lockfile was found in this artifact. What each scanner covers
0 findings · 0.2s
v0.71.0
No container image was published for this artifact. What each scanner covers
0 findings · 0.0s
vv1.6.0
No Go modules were found in this artifact. What each scanner covers
0 findings · 0.1s
No report in this scan: nerlo-multi-source.
1 scan on record. Every scan's full results are retained immutably for 24 months.
| Completed | Composite | Change | Scanners | Status |
|---|---|---|---|---|
| Aug 11, 2026 | Flagged65 | — | agentshield ·n/a: not applicablecisco-skill-scanner: completeagent-audit-kit: completenerlo-behavioral: completenerlo-install-instruction: completecapslock ·n/a: not applicabletrivy ·n/a: not applicableosv-scanner ·n/a: not applicabletrivy_image ·n/a: not applicablegovulncheck ·n/a: not applicable | completed |
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 27 findings across every scanner that examined this package.
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.
13 Documentation or example — The match is in documentation or sample code, confirmed by our own check to be outside the installed artifact.
Rules: UNANALYZABLE_BINARY, ARCHIVE_FILE_DETECTED, LOW_ANALYZABILITY · Files: /repo/specs/peppol/Peppol-EDN-Business-Message-Envelope-2.0.1-2023-08-17.pdf, /repo/specs/peppol/Peppol-EDN-Policy-for-use-of-identifiers-4.4.0-2025-02-06.pdf, /repo/specs/peppol/Peppol-EDN-Service-Metadata-Publishing-1.4.0-2025-02-06.pdf and 3 more · reported by cisco-skill-scanner
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/specs/peppol/SKILL.md · reported by cisco-skill-scanner
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-GHA-IMMUTABLE-001 · Files: .github/workflows/publish.yml · reported by agent-audit-kit
1 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: SECRET_PASSWORD_VAR · Files: /repo/tests/test_http_client_mtls.py · 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.
1 AAK-OAUTH-005
Files: src/mcp_einvoicing_core/http_client.py · reported by agent-audit-kit
1 AAK-SEC-MD-001
Files: SECURITY.md · reported by agent-audit-kit
1 AAK-SUPPLY-004
Files: pyproject.toml · reported by agent-audit-kit
1 DATA_EXFIL_NETWORK_REQUESTS
Files: /repo/src/mcp_einvoicing_core/download_rules.py · reported by cisco-skill-scanner
1 LAZY_LOAD_DEEP_NESTING
Files: /repo/SKILL.md · reported by cisco-skill-scanner
1 MANIFEST_MISSING_LICENSE
Files: /repo/SKILL.md · reported by cisco-skill-scanner
Artifact may transmit secrets over network
The artifact contains code that could transmit secrets over a network connection, specifically identified in `/repo/src/mcp_einvoicing_core/peppol/transport/transmitter.py`. It also exhibits undeclared network egress capabilities and potential OAuth credential handling issues. Further findings indicate supply chain concerns and a lack of a manifest license.
Concern level assessed by the review: High. 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 opt.nerlo-rules.nerlo-py-secret-to-network-egress
Files: /repo/src/mcp_einvoicing_core/peppol/transport/transmitter.py · reported by nerlo-behavioral
1 SOCIAL_ENG_VAGUE_DESCRIPTION
Files: /repo/SKILL.md · reported by cisco-skill-scanner
1 TOOL_ABUSE_UNDECLARED_NETWORK
Files: /repo/repo/README.ar.md · reported by cisco-skill-scanner