Caveat verdict

Fastmail API

fastmail-api

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

Accesses agent memory/notes AND makes external network calls

Fastmail JMAP email management skill that reads FASTMAIL_API_TOKEN only to authenticate against the official Fastmail API; it explicitly instructs never to commit tokens to files, with all behavior consistent with its stated email automation 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
100
transparency
90
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

Accesses agent memory/notes AND makes external network calls — may leak personal data

LLM02 · LLM07 · ASI03 · ASI06

Capability combination high

Accesses credentials AND makes external network calls — potential credential theft

LLM02 · ASI03

Capability combination high

Accesses agent memory AND makes external network calls — may leak conversation history

LLM02 · LLM07 · ASI06

Permission integrity

Accesses agent memory/configuration files

agent_memory

Findings (2)

Pattern match medium

References agent memory files

SKILL.md · code · memory.md

Pattern match medium

Instructs covert action — may act without user awareness

setup.md · prose · downgraded · silently

Permissions & capabilities

Requires 1 environment variable. (1 sensitive: FASTMAIL_API_TOKEN). Requires 2 system binaries. (1 elevated: curl).

agent_memorynetwork_outcredential_access
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