Caveat verdict

sip-voice-call-control

telnyx-voice-sip

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

Receives external input AND executes processes

Voice call control skill using the official Telnyx API with user-supplied TELNYX_API_KEY; sets up a local webhook server to handle incoming SIP calls and execute AI responses — legitimate voice assistant integration.

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
80
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 (10)

Pattern match high

Uses exec() — may execute shell commands

SKILL.md · code · exec(

Pattern match high

Possible hardcoded credential

test.sh · prose · downgraded · API_KEY=" .env 2>/dev/null; then echo

Pattern match medium

Downloads executables from external URLs

setup.sh · prose · downgraded · Install from https://

Pattern match medium

References child_process — can spawn system processes

src/dev.ts · prose · downgraded · child_process

Pattern match medium

HTTP request to bare IP address — common in malicious payloads

src/dev.ts · prose · downgraded · http://127.0.0.1

Pattern match medium

Dynamic import() — loads module at runtime

src/dev.ts · prose · downgraded · import('

Pattern match medium

Uses spawn() — can execute external programs

src/tunnel.ts · prose · downgraded · spawn(

Pattern match low

Accesses sensitive environment variables

src/dev.ts · prose · downgraded · process.env.TELNYX_API_KEY

Pattern match low

References agent memory files

src/dev.ts · prose · downgraded · MEMORY.md

Pattern match low

References webhook/callback URL

src/dev.ts · prose · downgraded · webhookUrl

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

Requires 1 environment variable. (1 sensitive: TELNYX_API_KEY). Requires 2 system binaries. (1 elevated: npm).

network_inpackage_installprocess_exec
Check another skill Browse the registry Auditing your own skills or configs? Use the API