> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sector8.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# API Overview

> REST API for the Sector8 Guard Module

## Base URL

```
https://api.sector8.ai/v1
```

## Authentication

All requests require two headers:

```http theme={null}
Authorization: Bearer YOUR_API_KEY
X-Client-ID: YOUR_CLIENT_ID
```

Get your API key from the [Sector8 dashboard](https://sector8.ai).

## Endpoints

| Method | Endpoint                               | Description                                |
| ------ | -------------------------------------- | ------------------------------------------ |
| `GET`  | [`/health`](/api-reference/health)     | Guard Module health and capability state   |
| `POST` | [`/evaluate`](/api-reference/evaluate) | Evaluate a tool call against active policy |
| `POST` | [`/analyze`](/api-reference/analyze)   | Analyze a completed LLM interaction        |

## Reason codes

| Code                        | Threat                              | Severity    |
| --------------------------- | ----------------------------------- | ----------- |
| `SHELL_INJECTION_BLOCKED`   | Shell injection                     | Critical    |
| `SENSITIVE_PATH_BLOCKED`    | Sensitive file access               | High        |
| `PII_EXPOSURE_BLOCKED`      | PII / PHI in payload                | Medium–High |
| `DATA_EXFILTRATION_BLOCKED` | External data transmission          | Critical    |
| `PROMPT_INJECTION_BLOCKED`  | Instruction override attempt        | High        |
| `SEMANTIC_THREAT_DETECTED`  | Semantic similarity to known attack | High        |
| `ESCALATION_SCORE_EXCEEDED` | Multi-turn session escalation       | High        |
| `PRE_FILTER_BLOCK`          | Fast-path pattern match             | Critical    |
| `LOCKDOWN_MODE_RESTRICTED`  | Capability gate                     | Medium      |
| `SOFT_COMPLIANCE_VIOLATION` | Output compliance — refusal bypass  | Medium      |

## Rate limits

| Tier       | Requests/min | Burst  |
| ---------- | ------------ | ------ |
| Free       | 60           | 100    |
| Pro        | 600          | 1,000  |
| Enterprise | Unlimited    | Custom |