Customer-service-assistant api-gateway

Name: api-gateway
Author: papdawin

Multi-tenant backend gateway for the voice assistant platform.

install

source · Clone the upstream repo

git clone https://github.com/papdawin/customer-service-assistant

manifest: web/backend/skill.md

source content

Backend API Gateway

Purpose

Serve a callable voice assistant deployed at different companies. It orchestrates shared STT, VAD, and TTS services, and routes tenant-specific queries to the correct RAG service.

Interfaces

HTTP GET
```
/api/health
```
and
```
/api/config
```
for service config.
HTTP POST
```
/api/voice
```
for one-shot audio processing.
WebSocket
```
/api/stream
```
for streaming VAD + pipeline execution.

Models

None locally; delegates to shared STT/TTS/VAD and tenant-specific RAG.

Libraries

```
fastapi
```
```
httpx
```
```
starlette
```
stdlib:
```
audioop
```
,
```
base64
```
,
```
json
```
,
```
wave
```
,
```
uuid
```
,
```
pathlib
```
,
```
time
```

Runtime Config

```
STT_URL
```
,
```
RAG_URL
```
,
```
TTS_URL
```
,
```
VAD_URL
```
```
COMPANY
```
,
```
HTTPX_TIMEOUT
```

Main Components

Pipeline runner combining STT, RAG, and TTS calls.
```
VadClient
```
helper for VAD service calls.
PCM resampling and WAV conversion utilities.
Static frontend mount when present.