Caveat verdict

exmail-mcp-setup

88
🟢 Trusted
No high-risk patterns surfaced by the deep scan — automated capability review, not behavioral proof.

Receives external input AND executes processes

Deploys a custom MCP email server for Tencent enterprise email with credentials stored in user-controlled config files; all behavior is transparent and documented for a legitimate email integration purpose.

Automated static analysis — not a human review. Caveat flags capabilities, not confirmed intent, and can produce false positives. Disagree with this verdict? Use Dispute below.

0
security
70
transparency
70
maintenance

What it does

These are capability combinations: each listed behavior occurs in the skill, but Caveat detects co-occurrence — it does not verify that one flows into another. Read the code to confirm a live chain.

Capability combination critical

Receives external input AND executes processes — the shape of a command & control channel

LLM05 · LLM06 · ASI10

Capability combination high

Installs packages AND executes processes — opaque dependency chain with execution

LLM03 · ASI04

Permission integrity

Installs packages at runtime — transitive dependencies are not auditable

package_install

Findings (3)

Pattern match high

References child_process — can spawn system processes

SKILL.md · code · child_process

Pattern match high

Uses spawn() — can execute external programs

SKILL.md · code · spawn(

Pattern match low

Accesses sensitive environment variables

references/index.js · prose · downgraded · process.env.EMAIL_PASSWORD

Why the tier is capped

Execution sink present in raw bytes (Hard Floor: class D). Final tier capped at Caution — cannot be lifted by any downgrade, example-payload opt-in, or allowlist.

Permissions & capabilities

No declared permissions — minimal attack surface.

network_inpackage_installprocess_exec
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