---
name: elevenlabs-twilio-memory-bridge
version: "1.0.0"
author: britrik
description: "FastAPI personalization webhook that adds persistent caller memory and dynamic context injection to ElevenLabs Conversational AI agents on Twilio. No audio proxying, file-based persistence, OpenClaw compatible."
tags: ["elevenlabs", "twilio", "voice-agent", "telephony", "conversational-ai", "memory-injection", "fastapi"]
emoji: ":telephone_receiver:"
---

# elevenlabs-twilio-memory-bridge

Personalization webhook service for ElevenLabs + Twilio voice agents with persistent caller memory.

## What It Does

When a call arrives on your Twilio number, ElevenLabs' native integration triggers this webhook. The bridge looks up the caller's history, loads long-term memory facts and daily context notes, combines them with a customizable soul/personality template, and returns everything as a system prompt override so your agent greets each caller with full context.

## Architecture

- **No audio proxying** - ElevenLabs and Twilio handle media directly
- **Webhook only** - called once per inbound call to inject context
- **File-based persistence** - JSON files in `./data/`, zero external dependencies
- **OpenClaw compatible** - works with any OpenAI-compatible LLM endpoint

## Endpoints

| Endpoint | Method | Purpose |
|----------|--------|---------|
| `/webhook/personalize` | POST | ElevenLabs calls this on inbound call |
| `/webhook/post-call` | POST | Optional post-call cleanup |
| `/api/memory/{phone_hash}` | POST | Add long-term fact about a caller |
| `/api/notes` | POST | Add global or caller-scoped context note |
| `/health` | GET | Health check |

## Setup

1. Clone repo, `pip install -r requirements.txt`
2. Copy `.env.example` to `.env`, fill in secrets
3. Configure ElevenLabs agent with Custom LLM pointing to your OpenClaw instance
4. Enable system prompt + first message overrides in agent Security settings
5. Add webhook URL `https://your-domain/webhook/personalize` in ElevenLabs settings
6. Import Twilio number in ElevenLabs dashboard
7. Run: `uvicorn app:app --host 0.0.0.0 --port 8000`

## Required Environment Variables

- `ELEVENLABS_API_KEY` - scoped ElevenLabs key
- `ELEVENLABS_AGENT_ID` - your agent ID
- `OPENCLAW_API_BASE_URL` - your OpenClaw instance URL
- `PUBLIC_BASE_URL` - publicly reachable URL of this service

## Security

- All caller phone numbers are SHA-256 hashed before storage/logging
- Secrets loaded exclusively from environment variables
- Optional HMAC webhook signature verification
- Safe for public GitHub repos, no secrets in source


---
Source attribution: kbarbel640-del
Original project: https://github.com/kbarbel640-del/skills/blob/e7e336ac628c3e3bd771aff1aaa469c93778f94a/skills/britrik/elevenlabs-twilio-memory-bridge/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2026 clawdbot

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: kbarbel640-del
Original project: https://github.com/kbarbel640-del/skills/blob/e7e336ac628c3e3bd771aff1aaa469c93778f94a/skills/britrik/elevenlabs-twilio-memory-bridge/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering, Product Management, Sales, Customer Support
Roles: Backend Developer, Customer Success Manager, ML / AI Engineer, Product Manager, Technical Support
Specialties: API, Backend
Tools: ElevenLabs, OpenAI API, Twilio
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: ebfd8d1b81f61282132aa80fd882ec1634a170feb3542c75ebec7dce5f77ceed