---
name: ai-assistant-multi-tool
title: "AI Assistant Multi-Tool"
description: "AI Assistant Multi-Tool — AI Assistant with custom function-calling tools for CRM lookup, appointment booking, and order status."
language: python
framework: flask
telnyx_products: [AI Inference]
---

# AI Assistant Multi-Tool

AI Assistant Multi-Tool — AI Assistant with custom function-calling tools for CRM lookup, appointment booking, and order status.

## Telnyx API Endpoints Used

- **AI Inference**: `POST /v2/ai/chat/completions` — [API reference](https://developers.telnyx.com/api/inference/chat-completions)

## Architecture

```
  API Request
        │
        ▼
  ┌──────────────────┐
  │ Your App          │
  └────────┬─────────┘
           │
           ├──► Telnyx AI Inference
           │
           ├──► Appointment scheduling
           │
           ▼
     JSON response
```

## Environment Variables

Copy `.env.example` to `.env` and fill in:

| Variable | Type | Example | Required | Description | Where to get it |
|----------|------|---------|----------|-------------|-----------------|
| `TELNYX_API_KEY` | `string` | `KEY0123456789ABCDEF` | **yes** | Telnyx API v2 key | [Portal](https://portal.telnyx.com/api-keys) |
| `AI_MODEL` | `string` | `moonshotai/Kimi-K2.6` | no | Telnyx AI Inference model name | [Portal](https://developers.telnyx.com/docs/inference/models) |
| `PORT` | `integer` | `5000` | no | HTTP server port | — |

## Setup

```bash
git clone https://github.com/team-telnyx/telnyx-code-examples.git
cd telnyx-code-examples/ai-assistant-multi-tool-python
cp .env.example .env    # ← fill in your credentials
pip install -r requirements.txt
python app.py           # starts on http://localhost:5000
```

### Webhook Configuration

1. Expose your local server:

   ```bash
   ngrok http 5000
   ```

2. Copy the HTTPS URL and configure in [Telnyx Portal](https://portal.telnyx.com):

   - **Call Control Application** → Webhook URL → `https://<id>.ngrok.io/webhooks/voice`

## API Reference

### `POST /chat`

Triggers chat

```bash
curl -X POST http://localhost:5000/chat \
  -H "Content-Type: application/json" \
  -d '{
    "message": "How do I set up a voice AI agent with Telnyx?"
  }'
```

**Response:**

```json
{
  "response": "Based on the Telnyx API documentation, you can implement programmable voice using Call Control...",
  "model": "moonshotai/Kimi-K2.6",
  "tokens_used": 284
}
```

### `GET /tools`

Returns tools

```bash
curl http://localhost:5000/tools
```

**Response:**

```json
{
  "items": [
    {
      "id": "item-001",
      "status": "active",
      "created_at": "2026-07-15T14:30:00Z"
    }
  ]
}
```

### `GET /tool-calls`

Returns tool-calls

```bash
curl http://localhost:5000/tool-calls
```

**Response:**

```json
{
  "calls": [
    {
      "call_id": "v3:uMi2qMWHT-mLFGkEm4t9tA",
      "from": "+18005551234",
      "to": "+12125559876",
      "duration_seconds": 145,
      "status": "completed"
    }
  ]
}
```

### `GET /health`

Returns health

```bash
curl http://localhost:5000/health
```

**Response:**

```json
{
  "status": "ok",
  "uptime_seconds": 3842,
  "active_sessions": 2,
  "version": "1.0.0"
}
```

## Troubleshooting

| Issue | Cause | Fix |
|-------|-------|-----|
| `401 Unauthorized` | Invalid or missing API key | Verify `TELNYX_API_KEY` in `.env` matches your key in the [Portal](https://portal.telnyx.com/api-keys) |
| Webhook not received | Local server not publicly reachable | Expose it with a tunnel (e.g. ngrok) and set the webhook URL in the [Telnyx Portal](https://portal.telnyx.com) |
| `422 Unprocessable Entity` | Missing or malformed request fields | Check the request body against the API Reference above |

## Related Examples

- [AI After Hours Emergency Triage (Python)](https://raw.githubusercontent.com/team-telnyx/telnyx-code-examples/main/ai-after-hours-emergency-triage-python/README.md)
- [AI Assistant Knowledge Base (Python)](https://raw.githubusercontent.com/team-telnyx/telnyx-code-examples/main/ai-assistant-knowledge-base-python/README.md)
- [AI Assistant Phone Setup (Python)](https://raw.githubusercontent.com/team-telnyx/telnyx-code-examples/main/ai-assistant-phone-setup-python/README.md)
- [AI Audiobook Narrator (Python)](https://raw.githubusercontent.com/team-telnyx/telnyx-code-examples/main/ai-audiobook-narrator-python/README.md)
- [AI Billing Dispute Resolution Agent (Python)](https://raw.githubusercontent.com/team-telnyx/telnyx-code-examples/main/ai-billing-dispute-resolution-agent-python/README.md)

## Resources

- [Call Control Guide](https://developers.telnyx.com/docs/voice/call-control)
- [AI Inference Guide](https://developers.telnyx.com/docs/inference)
- [Telnyx Developer Docs](https://developers.telnyx.com)
- [Telnyx Portal](https://portal.telnyx.com)

## Why Telnyx

Telnyx is an **AI Communications Infrastructure** platform — voice, messaging, SIP, AI, and IoT on one private, global network.