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MCP server for the MainBook bank-statement conversion API
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.
2 critical findings reported by agent-audit-kit, 0 of them in the installed artifact. The composite score alone does not reflect this — read the per-scanner reports below.
github: https://github.com/human-beyond/mainbook-mcp, 29 findings
Choose your runtime: the CLI writes the mcpServers config entry for that target.
nerlo install --target claude-code -- mainbook-mcp
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
11 findings · 7.9s
v0.3.74
14 findings · 3.9s
v0.1.0
2 findings · 3.6s
v0.1.0
1 finding · 3.6s
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
v0.1.0
This scanner found nothing in this artifact that it assesses. What each scanner covers
0 findings · 1.9s
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
1 scan on record. Every scan's full results are retained immutably for 24 months.
| Completed | Composite | Change | Scanners | Status |
|---|---|---|---|---|
| Aug 18, 2026 | Flagged55 | — | 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 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 28 findings across every scanner that examined this package. 2 of 2 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.
8 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-DNS-REBIND-001, AAK-ANTHROPIC-SDK-001, AAK-MCP-HTTP-NOAUTH-SERVER-001 and 2 more · Files: tests/test_transport.py, tests/live_smoke.py, tests/live_prod_gate.py and 3 more · reported by agent-audit-kit, 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.
2 AAK-OAUTH-008
Files: server.json, mcp.json · reported by agent-audit-kit
2 HIDDEN_DATA_FILE
Files: /repo/.cursor-plugin/plugin.json, /repo/.mcpbignore · reported by cisco-skill-scanner
2 opt.nerlo-rules.nerlo-py-secret-to-network-egress
Files: /repo/src/mainbook_mcp/auth.py, /repo/src/mainbook_mcp/client.py · reported by nerlo-behavioral
2 PIPELINE_TAINT_FLOW
Files: /repo/README.md, /repo/SKILL.md · reported by cisco-skill-scanner
2 RESOURCE_ABUSE_INFINITE_LOOP
Files: /repo/src/mainbook_mcp/auth.py, /repo/src/mainbook_mcp/client.py · reported by cisco-skill-scanner
1 AAK-MCP-ATTEST-001
Files: mcp.json · reported by agent-audit-kit
1 AAK-MCP-HTTP-NOAUTH-SERVER-001
Files:
Artifact has critical security findings.
The artifact contains hardcoded credentials in `src/mainbook_mcp/credentials.py` and `src/mainbook_mcp/auth.py` that are exposed to network egress. It also includes code in `src/mainbook_mcp/auth.py` and `src/mainbook_mcp/client.py` that can lead to infinite loops, consuming excessive resources. Additionally, the artifact's installation instructions in `README.md` include piping content directly to a shell, which can execute arbitrary commands.
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 AAK-OAUTH-3P-001
Files: pyproject.toml · reported by agent-audit-kit
1 AAK-SECRET-004
Files: src/mainbook_mcp/credentials.py · reported by agent-audit-kit
1 AAK-SUPPLY-004
Files: pyproject.toml · reported by agent-audit-kit
1 FILE_MAGIC_MISMATCH
Files: /repo/gate/cli-auth-red.txt · reported by cisco-skill-scanner
1 MANIFEST_MISSING_LICENSE
Files: /repo/SKILL.md · reported by cisco-skill-scanner
1 opt.nerlo-rules.nerlo-install-pipe-to-shell
Files: /repo/README.md · reported by nerlo-install-instruction
1 SOCIAL_ENG_VAGUE_DESCRIPTION
Files: /repo/SKILL.md · reported by cisco-skill-scanner
1 TOOL_ABUSE_UNDECLARED_NETWORK
Files: /repo/repo/CHANGELOG.md · reported by cisco-skill-scanner