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Documentation Index

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API and Integration Methods

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Required API Endpoints

Availability Management 
GET /api/v1/availability
Purpose: Query available appointment slots
Required parameters:
  • service_type (string)
  • location_id (string)
  • date_range_start (ISO 8601 datetime)
  • date_range_end (ISO 8601 datetime)
  • provider_id (string, optional)
  • duration_minutes (integer, optional)
Sample request: 
{
  "service_type": "inspection",
  "location_id": "LOC-12345",
  "date_range_start": "2025-11-01T08:00:00Z",
  "date_range_end": "2025-11-07T18:00:00Z",
  "duration_minutes": 60
}
Expected response: 
{
  "available_slots": [
    {
      "slot_id": "SLOT-789",
      "start_time": "2025-11-01T09:00:00Z",
      "end_time": "2025-11-01T10:00:00Z",
      "provider_id": "PROV-456",
      "provider_name": "John Smith",
      "price": 150.0,
      "currency": "USD"
    }
  ],
  "total_slots": 15,
  "next_available": "2025-11-01T09:00:00Z"
}
Booking Creation 
POST /api/v1/bookings
Purpose: Create new appointment booking
Required fields:
  • slot_id (string)
  • customer (object) – name, email, phone, and optional address
  • service_type (string)
  • notes (string, optional)
  • notification_preferences (object, optional)
Sample request: 
{
  "slot_id": "SLOT-789",
  "customer": {
    "name": "Jane Doe",
    "email": "jane.doe@example.com",
    "phone": "+1-555-0123",
    "address": {
      "street": "123 Main St",
      "city": "Springfield",
      "state": "IL",
      "zip": "62701"
    }
  },
  "service_type": "inspection",
  "notes": "Prefer morning appointments",
  "notification_preferences": {
    "sms": true,
    "email": true,
    "reminder_hours_before": 24
  }
}
Expected response: 
{
  "booking_id": "BOOK-12345",
  "confirmation_number": "CONF-ABC123",
  "status": "confirmed",
  "appointment_time": "2025-11-01T09:00:00Z",
  "customer": {},
  "provider": {},
  "created_at": "2025-10-31T14:30:00Z"
}
Booking Modifications 
PATCH /api/v1/bookings/{booking_id}      # Update existing booking
PUT /api/v1/bookings/{booking_id}/cancel # Cancel existing booking
GET /api/v1/bookings/{booking_id}        # Retrieve booking details
Cancellation payload fields:
  • reason (string, optional)
  • cancellation_type (string: customer_initiated, provider_initiated)
Customer Management 
GET /api/v1/customers/{customer_id}  # Retrieve customer profile/history
POST /api/v1/customers              # Create customer profile
PATCH /api/v1/customers/{customer_id}# Update customer details
Service Catalog 
GET /api/v1/services            # Retrieve available services and pricing
GET /api/v1/services/{service_id} # Detailed service information
Pricing Queries 
POST /api/v1/pricing/calculate
Purpose: Calculate pricing for a specific service configuration
Required fields:
  • service_type (string)
  • location_id (string)
  • modifiers (array, optional) – add-ons, special requirements

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Integration Protocols & Standards

Primary Protocol: RESTful APIs
  • Format: JSON (UTF-8 encoding)
  • Versioning: URL-based (e.g., /api/v1/)
  • HTTP methods: Full REST semantics (GET, POST, PATCH, PUT, DELETE)
  • Status codes: Standard HTTP status codes with detailed error responses
Webhook Support (Strongly Recommended) – Avoca consumes webhooks for real-time event notifications. Webhook events we should receive: 
booking.confirmed  – Booking successfully created
booking.updated     – Booking details modified
booking.cancelled   – Booking cancelled
booking.reminder    – Appointment reminder (optional)
availability.changed – Availability slots updated
service.updated      – Service catalog changes
pricing.updated      – Pricing changes
Webhook payload format: 
{
  "event_type": "booking.confirmed",
  "event_id": "evt_12345",
  "timestamp": "2025-10-31T14:30:00Z",
  "data": {
    "booking_id": "BOOK-12345",
    "status": "confirmed"
  }
}
Webhook requirements:
  • Endpoint: We provide a unique webhook endpoint URL per integration
  • Security: HMAC signature verification (preferred) or secret token in header
  • Delivery: At-least-once delivery with retry logic
  • Response: 200 OK within 5 seconds
  • Idempotency: Duplicate webhook deliveries handled via event_id
GraphQL (Optional) – We can support GraphQL if preferred. It reduces over-fetching, is useful for nested queries, and can coexist with REST endpoints.

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Authentication Methods

Preferred: OAuth 2.0 Client Credentials Flow Implementation details:
  • Grant type: client_credentials
  • Token endpoint: /oauth/token
  • Token format: JWT (preferred) or opaque tokens
  • Token expiration: 1 hour recommended
  • Refresh strategy: Automatic refresh before expiration
  • Scopes: Role-based (e.g., bookings:read, bookings:write, customers:read)
Request: 
POST /oauth/token
Content-Type: application/x-www-form-urlencoded

grant_type=client_credentials&
client_id={our_client_id}&
client_secret={our_client_secret}&
scope=bookings:read bookings:write availability:read
Response: 
{
  "access_token": "eyJhbGc...",
  "token_type": "Bearer",
  "expires_in": 3600,
  "scope": "bookings:read bookings:write availability:read"
}
Alternative: API Keys – If OAuth is not feasible:
  • API keys transmitted via Authorization: Bearer {api_key}
  • Separate keys for production and sandbox
  • Key rotation with grace period
  • Rate limiting and monitoring per API key
JWT Tokens – If using JWT directly:
  • Algorithm: RS256 or ES256 (asymmetric preferred)
  • Claims: Include iss, aud, exp, sub
  • Key management: Public key endpoint for signature verification
Security Requirements
  • Credentials stored in encrypted secrets management (1Password, AWS Secrets Manager)
  • Credentials never logged or exposed in errors
  • Automatic credential rotation supported
  • Per-environment credentials (development, staging, production)

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API Design Preferences

Data Formats
  • Primary: JSON with UTF-8 encoding
  • Date/time: ISO 8601 (e.g., 2025-10-31T14:30:00Z)
  • Decimal numbers: String representation for currency to avoid floating-point drift
Versioning Strategy
  • URL-based versioning (e.g., /api/v1/)
  • Maintain at least one previous major version for backward compatibility
  • Deprecation notices: Minimum 90-day notice with Sunset HTTP header
  • Version negotiation: Current version advertised in response headers
Rate Limiting
  • Recommended thresholds:
    • Standard operations: 1000 requests/minute per API key
    • Availability queries: 300 requests/minute
    • Bulk operations: 100 requests/minute
  • Rate limit headers:
X-RateLimit-Limit: 1000
X-RateLimit-Remaining: 847
X-RateLimit-Reset: 1698765432
  • 429 responses should include clear retry-after guidance
  • Allow reasonable burst capacity (e.g., 2× sustained rate for 10 seconds)
Pagination 
GET /api/v1/bookings?page=2&per_page=50
# or
GET /api/v1/bookings?cursor=eyJpZCI6MTIzfQ&limit=50
Sample response: 
{
  "data": [],
  "pagination": {
    "total": 500,
    "page": 2,
    "per_page": 50,
    "next_cursor": "eyJpZCI6MTczfQ"
  }
}
Error Response Format 
{
  "error": {
    "code": "SLOT_UNAVAILABLE",
    "message": "The requested time slot is no longer available",
    "details": {
      "slot_id": "SLOT-789",
      "reason": "booked_by_another_customer"
    },
    "request_id": "req_abc123",
    "timestamp": "2025-10-31T14:30:00Z"
  }
}