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FastMail MCP server for local email management
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.
Choose your runtime: the CLI writes the mcpServers config entry for that target.
nerlo install --target claude-code -- fastmail-mcp-server
Install respects the composite badge: Clean proceeds, Caution prompts for confirmation, and Flagged is refused. Write operations require an API token.
7 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
16 findings · 7.5s
v0.3.74
5 findings · 2.2s
v0.1.0
4 findings · 3.9s
v0.1.0
0 findings · 3.9s
v0.71.0
9 findings · 0.4s
v2.3.8
9 findings · 8.3s
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 · 1.7s
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 20, 2026 | Flagged50 | — | agentshield: completecisco-skill-scanner: completeagent-audit-kit: completenerlo-behavioral: completenerlo-install-instruction: completecapslock ·n/a: not applicablenerlo-multi-source ·n/a: not applicabletrivy: completeosv-scanner: completetrivy_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 43 findings across every scanner that examined this package.
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.
2 Documentation or example — The match is in documentation or sample code, confirmed by our own check to be outside the installed artifact.
Rules: SOCIAL_ENG_VAGUE_DESCRIPTION, MANIFEST_MISSING_LICENSE · Files: /repo/docs/SKILL.md · reported by cisco-skill-scanner
The model could have called any of these a false positive and did not.
6 FILE_MAGIC_MISMATCH
Files: /repo/scripts/move-final-newsletters.js, /repo/sieve/block2-file-into-folder-actions.txt, /repo/scripts/aggressive-organization.js and 3 more · reported by cisco-skill-scanner
4 DATA_EXFIL_JS_NETWORK
Files: /repo/src/fastmail-client.js · reported by cisco-skill-scanner
4 opt.nerlo-rules.nerlo-js-secret-to-network-egress
Files: /repo/src/fastmail-client.js · reported by nerlo-behavioral
2 GHSA-268h-hp4c-crq3
Files: package-lock.json, /repo/package-lock.json · reported by trivy, osv-scanner
2 GHSA-c7w3-x93f-qmm8
Files: /repo/package-lock.json, package-lock.json · reported by osv-scanner, trivy
2 GHSA-p6gq-j5cr-w38f
Files: /repo/package-lock.json, package-lock.json · reported by osv-scanner, trivy
2 GHSA-r7g4-qg5f-qqm2
Files: /repo/package-lock.json, package-lock.json · reported by osv-scanner, trivy
2 GHSA-vvjj-xcjg-gr5g
Files: /repo/package-lock.json, package-lock.json · reported by osv-scanner, trivy
2 GHSA-wqvq-jvpq-h66f
Files: /repo/package-lock.json, package-lock.json · reported by osv-scanner, trivy
1 AAK-ANTHROPIC-SDK-001
Files: src/index.js · reported by agent-audit-kit
1 AAK-DNS-REBIND-002
Files: package.json · reported by agent-audit-kit
1 AAK-HEALTHCARE-AI-004
Files: sieve/fastmail-sieve-rules.txt · reported by agent-audit-kit
1 AAK-OAUTH-3P-001
Files: package.json · reported by agent-audit-kit
1 CVE-2025-13033
Files: package-lock.json · reported by trivy
1 CVE-2025-14874
Files: package-lock.json · reported by trivy
1 CVE-2025-66414
Files: package-lock.json · reported by trivy
1 DATA_EXFIL_JS_FS_ACCESS
Files: /repo/scripts/organize-files.js · reported by cisco-skill-scanner
1 GHSA-mm7p-fcc7-pg87
Files: /repo/package-lock.json · reported by osv-scanner
1 GHSA-rcmh-qjqh-p98v
Files: /repo/package-lock.json · reported by osv-scanner
1 GHSA-w48q-cv73-mx4w
Files: /repo/package-lock.json · reported by osv-scanner
1 LOW_ANALYZABILITY
Files: /repo · reported by cisco-skill-scanner
2 The model called these false positives and our own check did not agree, so the dismissal was refused.
Rules: AAK-SEC-MD-001, MANIFEST_MISSING_LICENSE · Files: SECURITY.md, /repo/SKILL.md · reported by agent-audit-kit, cisco-skill-scanner
1 The model did not answer for these findings.
Rules: SOCIAL_ENG_VAGUE_DESCRIPTION · Files: /repo/SKILL.md · reported by cisco-skill-scanner
High severity vulnerabilities and secret network egress detected.
The artifact includes multiple high severity vulnerabilities in its dependencies, such as `GHSA-w48q-cv73-mx4w` and `CVE-2025-14874`, primarily noted in `package-lock.json`. It also performs network egress of secrets from `src/fastmail-client.js`. Other high severity findings include potential DNS rebinding in `package.json` and the use of the Anthropic SDK in `src/index.js`. These findings indicate significant risks related to data exposure and supply chain security.
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.