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

# Proxy Mode API

> Drop-in proxy for your LLM provider

Use Krixai as a drop-in proxy for your LLM provider. Same request format as OpenAI — just change the base URL.

```http theme={null}
POST https://api.krixaisecurity.com/v1/chat/completions
```

### Request Headers

| Header                 | Required | Description                                                           |
| ---------------------- | -------- | --------------------------------------------------------------------- |
| `Authorization`        | Yes      | Your LLM provider API key: `Bearer sk-...`                            |
| `X-Krixai-Key`         | Yes      | Your Krixai API key: `kx-live-...`                                    |
| `X-Krixai-Mode`        | No       | `shadow`, `advisory`, or `blocking` (default from dashboard settings) |
| `X-Krixai-Sensitivity` | No       | `low`, `medium`, `high`, or `paranoid` (default: `medium`)            |
| `Content-Type`         | Yes      | `application/json`                                                    |

### Request Body

Identical to OpenAI's chat completions API. Krixai passes it through after scanning.

### Response (Allowed)

Identical to OpenAI's response, with added headers:

```http theme={null}
X-Krixai-Request-Id: kx-req-abc123
X-Krixai-Scan-Time-Ms: 14
X-Krixai-Input-Status: pass
X-Krixai-Output-Status: pass
```

### Response (Blocked)

If you are using `blocking` mode and a threat is detected, Krixai returns a `403 Forbidden` with a JSON payload detailing the detection.

```json theme={null}
{
  "error": {
    "type": "request_blocked",
    "code": "prompt_injection_detected",
    "message": "Krixai blocked this request.",
    "detection": {
      "category": "prompt_injection",
      "sub_type": "instruction_override",
      "confidence": 0.987,
      "scan_time_ms": 12,
      "request_id": "kx-req-abc123",
      "policy": "auto"
    }
  }
}
```