# Third-Party Connectivity Documentation for PhoneMate

This document outlines the configuration and integration of third-party services used by PhoneMate’s backend services. All connections will be secured, and credentials will be managed through environment variables.

## 1. Retellai Integration

- **Purpose:**
  - Enable AI bot creation and lifecycle management for phone-based interactions.
- **Endpoints & API Usage:**
  - Use Retellai’s API endpoints for creating, updating, and querying bot configurations.
- **Configuration:**
  - Store all Retellai API keys securely.
  - Ensure API calls utilize HTTPS and are optimized for low latency.

## 2. Twilio Integration

- **Purpose:**
  - Manage phone number provisioning, call routing, and forwarding instructions.
- **Required Credentials:**
  - Twilio SID and Auth Tokens.
- **Configuration:**
  - Configure webhook endpoints in your backend (secured via Bearer token authentication).
  - Securely store Twilio credentials as environment variables.

## 3. Payment Providers

- **Options:**
  - Stripe or Lemonsquishy, selected based on vendor preference.
- **API Integration Guidelines:**
  - Retrieve and securely store public and secret API keys.
  - Implement webhook endpoints to capture payment events and status updates.
  - Ensure all endpoints use HTTPS for secure transactions.

## 4. Speech Services (Future Enhancements)

- **ElevenLabs (Text-to-Speech):**
  - For converting text responses to audio if required.
  - Secure API keys and ensure low-latency configuration.
- **Deepgram (Speech-to-Text):**
  - For post-call transcription tasks.
  - Configure secure API calls for data upload and transcript retrieval.

## 5. Additional Services

- **Analytics (Future Integration):**
  - Optionally integrate Google Analytics or similar tools to monitor API usage and performance.

## 6. Security Best Practices

- **Credential Management:**
  - Use environment variables or a secured secrets management system to store all API keys.
- **Secure Communication:**
  - All third-party interactions must occur over HTTPS.
- **Compliance:**
  - Ensure full adherence to GDPR and other local data protection regulations for all integrations.
