> ## Documentation Index
> Fetch the complete documentation index at: https://docs.guardway.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Limitations

> Current limitations, known issues, and planned improvements for Guardway Gateway.

Current limitations, known issues, and planned improvements for Guardway Gateway.

## Provider limitations

### Supported providers

Guardway's gateway ships with presets for **20+ providers** across chat, embedding, image, and audio. For the list shown in the dashboard's provider picker, see [Connect a provider](/platform/configuration/providers). Beyond the picker, the gateway also carries adapters for specialty services — **Voyage** (embeddings), **AssemblyAI** (transcription), **ElevenLabs** (text-to-speech), and **Fal.ai** (images) — configured via [environment variables](/guardway-gateway/environment).

**Anything else**: use the **Custom (OpenAI-compatible)** preset for any endpoint that speaks the OpenAI API — self-hosted vLLM, partner gateways, private model servers, etc.

***

## Missing Features

<Note>
  The following features are not yet implemented or only partially available. Workarounds are provided where possible.
</Note>

### 1. Batch Processing API

**Status**: Not implemented

No support for batch API. Process requests individually in parallel client-side as a workaround.

### 2. Vector Store Support

**Status**: Not implemented

No built-in vector database integration. Use external vector databases (Pinecone, Weaviate, Qdrant, etc.) as a workaround.

### 3. Assistants API

**Status**: Partial implementation

Thread management, code interpreter, and file search are not yet available. Implement assistant logic client-side as a workaround.

### 4. Fine-tuning API

**Status**: Not implemented

Fine-tune directly with provider APIs as a workaround.

### 5. Multi-Modal Support

**Supported**: Text (chat, completions), Images (vision, generation), Audio (transcription, TTS)

**Not yet supported**: Video processing, multi-modal embeddings, image editing.

***

## Performance Considerations

<Note>
  Guardrail latency is the primary performance consideration. Disable unused guardrails and choose appropriate detection methods to minimize impact.
</Note>

* **SLM guardrails** add some latency per request. Use selective guardrails and adjust inspection direction for latency-sensitive workloads.
* **Streaming responses** are not cacheable. Use non-streaming requests when caching is important.
* **Cache effectiveness** depends on request similarity since caching uses exact request matching.

***

## MCP Limitations

* Only HTTP and stdio transports are supported (no WebSocket or gRPC)
* Tool response size is configurable but limited by default
* Sessions are not shared across gateway instances; use session affinity in load balancers

***

## Caching Limitations

* Cache uses exact request hash matching (no semantic similarity)
* Streaming responses are not cached
* In-memory cache size is limited; use Redis cache for larger capacity

***

## Browser Compatibility

### Admin UI Browser Support

**Fully Supported**:

* Chrome 90+
* Firefox 88+
* Safari 14+
* Edge 90+

**Not Supported**:

* Internet Explorer (all versions)

**Recommendation**: Use latest Chrome or Firefox for best experience.

***

## Future Improvements

<CardGroup cols={2}>
  <Card icon="bolt" title="Short-Term">
    * Expand provider support
    * Optimize guardrail performance
    * Add batch processing API
  </Card>

  <Card icon="target" title="Medium-Term">
    * Vector store integration
    * Advanced routing strategies
    * WebSocket support
  </Card>

  <Card icon="rocket" title="Long-Term">
    * Semantic caching
    * Fine-tuning API
    * Multi-modal expansion
  </Card>
</CardGroup>

***

## Reporting Issues

Found a bug or limitation not listed here?

* **Email**: [support@guardway.ai](mailto:support@guardway.ai)
* Include: description, steps to reproduce, expected vs actual behavior, environment details, and logs/screenshots

**Security Issues**: Email [security@guardway.ai](mailto:security@guardway.ai) (do not create public issues)