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Phone Agent Skill — measured AI agent skill | DecimalAI

sundial-org/phone-agent

SkillScore86Maintained

Run a real-time AI phone agent using Twilio, Deepgram, and ElevenLabs. Handles incoming calls, transcribes audio, generates responses via LLM, and speaks back via streaming TTS. Use when user wants to: (1) Test voice AI capabilities, (2) Handle phone calls programmatically, (3) Build a conversational voice bot.

AI/MLby sundial-org

Links this skill to your agents and keeps it current with the author’s updates.

Automatic

AI Engineer pack

1 · One-time — install the CLI (docs ↗)

pip install decimalai

2 · Get the skill — writes .claude/skills/sundial-org-phone-agent/SKILL.md

decimalai skills pull sundial-org-phone-agent --out .claude/skills/

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/sundial-org-phone-agent/SKILL.md https://app.decimal.ai/s/sundial-org-phone-agent/SKILL.md

Raw file: /s/sundial-org-phone-agent/SKILL.md ↗ · machine-readable summary at /s/sundial-org-phone-agent.json ↗

In productionGlobal

how this skill behaves on real traffic · last 30 days

No production data for this skill yet — usage numbers appear here once agents start running it.

Anonymized aggregate across every org using this skill — proof from real production use, not a demo.

Does this skill help? · Benchmark: with vs. withoutsign in to run this on your agents

22 test cases from the publisher’s eval.yaml · each run twice on gemini-3.6-flash — with the skill injected, then without · last run 4h ago

Yes — +59% lift-27% tokens0% turns86% of whole cases pass with skill (19/22)

Test case	Without → With	Effect	Δ tokens	Δ turns
case-03	✗→✓	▲ Improved	-22%	0%
case-01	✗→✓	▲ Improved	-38%	0%
case-02	✗→✓	▲ Improved	-52%	0%
case-07	✗→✓	▲ Improved	-49%	0%
case-10	✗→✓	▲ Improved	-60%	0%

Showing 5 of 22 cases

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

sundial-org / awesome-openclaw-skills

skills/phone-agent/SKILL.md

View on GitHub ↗

Imported 8/3/2026Version v1Bundled 3 files · scripts

Skill contents

scripts/

SKILL.md

Phone Agent Skill

Runs a local FastAPI server that acts as a real-time voice bridge.

Architecture

Twilio (Phone) <--> WebSocket (Audio) <--> [Local Server] <--> Deepgram (STT)
                                                  |
                                                  +--> OpenAI (LLM)
                                                  +--> ElevenLabs (TTS)

Prerequisites

Twilio Account: Phone number + TwiML App.
Deepgram API Key: For fast speech-to-text.
OpenAI API Key: For the conversation logic.
ElevenLabs API Key: For realistic text-to-speech.
Ngrok (or similar): To expose your local port 8080 to Twilio.

Setup

Install Dependencies:

bash pip install -r scripts/requirements.txt

Set Environment Variables (in ~/.moltbot/.env, ~/.clawdbot/.env, or export):

bash export DEEPGRAM_API_KEY="your_key" export OPENAI_API_KEY="your_key" export ELEVENLABS_API_KEY="your_key" export TWILIO_ACCOUNT_SID="your_sid" export TWILIO_AUTH_TOKEN="your_token" export PORT=8080

Start the Server:

bash python3 scripts/server.py

Expose to Internet:

bash ngrok http 8080

Configure Twilio:

Go to your Phone Number settings.
Set "Voice & Fax" -> "A Call Comes In" to Webhook.
URL: https://<your-ngrok-url>.ngrok.io/incoming
Method: POST

Usage

Call your Twilio number. The agent should answer, transcribe your speech, think, and reply in a natural voice.

Customization

System Prompt: Edit SYSTEM_PROMPT in scripts/server.py to change the persona.
Voice: Change ELEVENLABS_VOICE_ID to use different voices.
Model: Switch gpt-4o-mini to gpt-4 for smarter (but slower) responses.

Want to see if sundial-org/phone-agent would activate on your phrasing? Try it before you install — no LLM call, no signup.

Other measured skills in the registry, with their headline benchmark lift.