Caveat verdict

gmail-to-calendar

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

Reads local files AND makes external network calls

The skill reads Gmail messages and creates Google Calendar events via the Maton gateway using MATON_API_KEY, with the only notable behavior being that it stores the API key in a local .env file (which it explicitly instructs not to commit to Git) — behavior matching its stated 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
40
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

Reads local files AND makes external network calls — the capabilities for data exfiltration co-occur (data-flow not verified)

LLM02 · LLM06 · ASI03

Capability combination critical

Reads files, encodes data, AND makes external network calls — the obfuscated-exfiltration pattern (data-flow not verified)

LLM02 · ASI03

Capability combination high

Accesses credentials AND makes external network calls — potential credential theft

LLM02 · ASI03

Capability combination high

Accesses credentials AND encodes data — may obfuscate stolen credentials

LLM02 · ASI03 · ASI04

Permission integrity

Makes network requests but does not declare curl/wget in required binaries

network_out

Performs file operations but does not declare file-accessing binaries

file_read

Findings (6)

Confirmed in code medium

Accesses process.env — reads environment variables

SKILL.md · code

Pattern match medium

Python urllib.request — network access

SKILL.md · code · urllib.request

Pattern match medium

Base64 encoding/decoding

SKILL.md · code · BASE64_ENCODE

Pattern match medium

Accesses sensitive environment variables

SKILL.md · code · process.env.MATON_API_KEY

Confirmed in code low

fetch() — outbound network request

SKILL.md · code

Pattern match low

Makes HTTP request to external URL

SKILL.md · code · fetch( 'https://

Why the tier is capped

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

Permissions & capabilities

Requires 1 environment variable. (1 sensitive: MATON_API_KEY).

network_outfile_readcredential_accessdata_encoding
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