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docs/api/SPEC.md

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+# LN1 API Specifications
+
+## Overview
+
+This document provides detailed technical specifications for the LN1 API, including authentication, endpoints, data models, and integration patterns.
+
+## API Standards
+
+### Protocol
+- REST/HTTP
+- WebSocket for real-time updates
+- GraphQL for complex queries (future implementation)
+
+### Authentication Methods
+
+```typescript
+interface AuthenticationMethods {
+    JWT: {
+        format: "Bearer <token>",
+        expiry: "1h",
+        refresh: boolean
+    },
+    APIKey: {
+        header: "X-API-Key",
+        format: "string",
+        rotation: "90d"
+    }
+}
+```
+
+## Data Models
+
+### Core Models
+
+```typescript
+interface Document {
+    id: string;
+    hash: string;
+    content: {
+        raw: string;
+        parsed: object;
+    };
+    metadata: {
+        created: timestamp;
+        modified: timestamp;
+        version: string;
+        status: DocumentStatus;
+    };
+    validation: {
+        status: ValidationStatus;
+        history: ValidationEvent[];
+    }
+}
+
+enum DocumentStatus {
+    DRAFT = 'draft',
+    PENDING = 'pending',
+    VALIDATED = 'validated',
+    REJECTED = 'rejected'
+}
+```
+
+## API Versioning
+
+### Version Control
+
+```typescript
+interface VersioningSchema {
+    current: 'v1',
+    supported: ['v1'],
+    deprecated: [],
+    sunset: {
+        'v1-beta': '2025-01-01'
+    }
+}
+```
+
+## Endpoint Specifications
+
+### Document Management
+
+```typescript
+interface DocumentEndpoints {
+    create: {
+        method: 'POST',
+        path: '/v1/documents',
+        body: DocumentCreateRequest,
+        response: DocumentResponse
+    },
+    retrieve: {
+        method: 'GET',
+        path: '/v1/documents/:id',
+        params: DocumentRetrieveParams,
+        response: DocumentResponse
+    }
+}
+```
+
+### Validation Operations
+
+```typescript
+interface ValidationEndpoints {
+    submit: {
+        method: 'POST',
+        path: '/v1/validation',
+        body: ValidationRequest,
+        response: ValidationResponse
+    },
+    status: {
+        method: 'GET',
+        path: '/v1/validation/:id',
+        response: ValidationStatusResponse
+    }
+}
+```
+
+## Response Formats
+
+### Success Response
+
+```json
+{
+    "status": "success",
+    "data": {
+        "id": "string",
+        "type": "string",
+        "attributes": {},
+        "relationships": {}
+    },
+    "meta": {
+        "timestamp": "ISO8601",
+        "version": "string"
+    }
+}
+```
+
+### Error Response
+
+```json
+{
+    "status": "error",
+    "error": {
+        "code": "string",
+        "message": "string",
+        "details": {}
+    },
+    "meta": {
+        "timestamp": "ISO8601",
+        "requestId": "string"
+    }
+}
+```
+
+## WebSocket Specifications
+
+### Connection Protocol
+
+```typescript
+interface WebSocketConfig {
+    url: 'wss://api.ln1.datahive.network/v1/ws',
+    protocols: ['v1.websocket'],
+    heartbeat: {
+        interval: 30000,
+        timeout: 5000
+    }
+}
+```
+
+### Message Format
+
+```typescript
+interface WebSocketMessage {
+    type: 'EVENT' | 'REQUEST' | 'RESPONSE',
+    id: string,
+    payload: {
+        action: string,
+        data: any
+    },
+    meta: {
+        timestamp: number,
+        version: string
+    }
+}
+```
+
+## Rate Limiting
+
+### Configuration
+
+```typescript
+interface RateLimits {
+    default: {
+        window: '1m',
+        max: 1000
+    },
+    endpoints: {
+        '/documents': {
+            window: '1m',
+            max: 100
+        },
+        '/validation': {
+            window: '1m',
+            max: 50
+        }
+    }
+}
+```
+
+## Security Requirements
+
+### TLS Configuration
+
+```typescript
+interface TLSConfig {
+    version: 'TLS 1.3',
+    ciphers: [
+        'TLS_AES_256_GCM_SHA384',
+        'TLS_CHACHA20_POLY1305_SHA256'
+    ],
+    certificates: {
+        type: 'X.509',
+        keySize: 4096
+    }
+}
+```
+
+## Integration Patterns
+
+### Webhook Delivery
+
+```typescript
+interface WebhookConfig {
+    retry: {
+        attempts: 3,
+        backoff: 'exponential',
+        maxDelay: 3600
+    },
+    payload: {
+        format: 'JSON',
+        signature: 'HMAC-SHA256'
+    }
+}
+```
+
+## Performance Requirements
+
+### Response Times
+
+```typescript
+interface PerformanceTargets {
+    read: {
+        p95: '100ms',
+        p99: '200ms'
+    },
+    write: {
+        p95: '200ms',
+        p99: '500ms'
+    },
+    validation: {
+        p95: '1s',
+        p99: '2s'
+    }
+}
+```
+
+## Implementation Guidelines
+
+### Best Practices
+
+- Use proper HTTP status codes
+- Implement request validation
+- Handle rate limiting gracefully
+- Provide detailed error messages
+- Maintain API versioning
+- Document all changes