EmiliaVision Webhook API Reference¶

Version: 2.0
Base URL: https://api.emiliavision.com/webhooks/v1/pos
Protocol: HTTPS only
Format: JSON

🔑 Authentication¶

Webhook Token¶

Each integration receives a unique UUID token that must be included in the URL path.

Format: {base_url}/{token}

Example:

https://api.emiliavision.com/webhooks/v1/pos/019ab6ed-150a-7be1-920f-ab82305e5d41

Token Security¶

Tokens are validated on each request
Invalid tokens return 401 Unauthorized
Tokens can be deactivated remotely if compromised
Request new tokens via team@emiliavision.com

🌍 Environments¶

Production (Default)¶

https://api.emiliavision.com/webhooks/v1/pos/{token}

Development/Testing¶

https://api.emiliavision.com/webhooks/v1/pos/{token}?env=dev

Query Parameters: | Parameter | Values | Default | Description | |-----------|---------|---------|-------------| | env | dev, prod | prod | Target environment for data storage |

📨 Request Specification¶

HTTP Method¶

POST

Headers¶

Header	Required	Value	Description
`Content-Type`	Yes	`application/json`	Request body format
`Content-Length`	Yes	`<size>`	Payload size in bytes
`X-Request-ID`	No	`<uuid>`	Your tracking ID for debugging

Request Limits¶

Limit	Value	Description
Max Payload Size	10 MB	Returns `413 Payload Too Large` if exceeded
Request Timeout	30 seconds	Connection timeout
Rate Limit	100 req/sec	Per token rate limiting
Burst Limit	200 req/10sec	Short burst allowance

📊 Event Types¶

1. `session_opened`¶

Sent when a new table/check is opened.

Required Fields: | Field | Type | Description | Example | |-------|------|-------------|---------| | event | string | Event type identifier | "session_opened" | | timestamp | ISO 8601 | When the session started | "2025-11-24T18:30:00-03:00" | | order_id | string | Your unique order identifier | "ORD-2025-0124" | | table_number | string | Table identifier | "Mesa 8" |

Optional Fields: | Field | Type | Description | Example | |-------|------|-------------|---------| | server.id | integer | Employee ID who opened | 72 | | server.name | string | Employee name | "João Silva" | | party_size | integer | Number of guests | 4 |

Example Payload:

{
  "event": "session_opened",
  "timestamp": "2025-11-24T18:30:00-03:00",
  "order_id": "ORD-2025-0124",
  "table_number": "Mesa 8",
  "server": {
    "id": 72,
    "name": "João Silva"
  },
  "party_size": 4
}

2. `items_added`¶

Sent when items are added to an order.

Required Fields: | Field | Type | Description | Example | |-------|------|-------------|---------| | event | string | Event type identifier | "items_added" | | timestamp | ISO 8601 | When items were added | "2025-11-24T18:35:00-03:00" | | order_id | string | Order identifier | "ORD-2025-0124" | | table_number | string | Table identifier | "Mesa 8" | | items | array | List of items added | See items structure |

Items Array Structure: | Field | Type | Required | Description | Example | |-------|------|----------|-------------|---------| | timestamp | ISO 8601 | Yes | When this specific item was ordered | "2025-11-24T18:35:00-03:00" | | employee_id | integer | Yes | Who took the order | 72 | | name | string | Yes | Item name | "Focaccia" | | quantity | integer | Yes | Number ordered | 1 | | price | decimal | Yes | Unit price | 19.00 | | employee_name | string | No | Employee name | "João Silva" | | item_id | string | No | Your item SKU | "ITEM-001" | | category | string | No | Item category | "Appetizers" | | modifiers | array | No | Customizations | ["Extra cheese"] |

Example Payload:

id=__codelineno-4-1 name=__codelineno-4-1 href=#__codelineno-4-1>{ "event": "items_added", "timestamp": "2025-11-24T18:35:00-03:00", "order_id": "ORD-2025-0124", "table_number": "Mesa 8", "items": [ { "timestamp": "2025-11-24T18:35:00-03:00", "employee_id": 72, "employee_name": "João Silva", "item_id": "ITEM-001", "name": "Focaccia", "category": "Appetizers", "quantity": 1, "price": 19.00, "modifiers": [] }, { "timestamp": "2025-11-24T18:35:00-03:00", "employee_id": 72, "employee_name": "João Silva", "item_id": "ITEM-002", "name": "Agua com Gas", "category": "Beverages", "quantity": 2, "price": 11.00, "modifiers": ["Lemon"] } ] class=p>}

3. `items_removed`¶

Sent when items are cancelled or removed.

Required Fields: | Field | Type | Description | Example | |-------|------|-------------|---------| | event | string | Event type identifier | "items_removed" | | timestamp | ISO 8601 | When items were removed | "2025-11-24T18:40:00-03:00" | | order_id | string | Order identifier | "ORD-2025-0124" | | table_number | string | Table identifier | "Mesa 8" | | items | array | List of items removed | See structure above |

Optional Fields: | Field | Type | Description | Example | |-------|------|-------------|---------| | reason | string | Cancellation reason | "Customer changed mind" | | cancelled_by | object | Employee who cancelled | {"id": 72, "name": "João Silva"} |

4. `session_closed`¶

Sent when check is closed/paid.

Required Fields: | Field | Type | Description | Example | |-------|------|-------------|---------| | event | string | Event type identifier | "session_closed" | | timestamp | ISO 8601 | When session ended | "2025-11-24T20:15:00-03:00" | | order_id | string | Order identifier | "ORD-2025-0124" | | table_number | string | Table identifier | "Mesa 8" |

Recommended Fields: | Field | Type | Description | Example | |-------|------|-------------|---------| | session_start | ISO 8601 | Original open time | "2025-11-24T18:30:00-03:00" | | session_end | ISO 8601 | Close time | "2025-11-24T20:15:00-03:00" | | duration_minutes | integer | Total duration | 105 | | totals.subtotal | decimal | Pre-tax/tip amount | 194.00 | | totals.tip | decimal | Tip amount | 25.22 | | totals.tax | decimal | Tax amount | 19.40 | | totals.total | decimal | Final amount | 238.62 | | payment.method | string | Payment type | "VISA_CREDIT" | | closed_by | object | Employee who closed | {"id": 96, "name": "Maria Santos"} |

Full Example:

{
  "event": "session_closed",
  "timestamp": "2025-11-24T20:15:00-03:00",
  "order_id": "ORD-2025-0124",
  "table_number": "Mesa 8",
  "session_start": "2025-11-24T18:30:00-03:00",
  "session_end": "2025-11-24T20:15:00-03:00",
  "duration_minutes": 105,
  "totals": {
    "subtotal": 194.00,
    "tip": 25.22,
    "tax": 19.40,
    "total": 238.62
  },
  "payment": {
    "method": "VISA_CREDIT",
    "fiscal_receipt": "NFe35251133111140001168650020000762241540579084"
  },
  "closed_by": {
    "id": 96,
    "name": "Maria Santos"
  }
}

5. `session_complete`¶

Complete session data in a single webhook (alternative to multiple events).

This is ideal when you want to send everything at once after payment.

Example Payload:

{
  "event": "session_complete",
  "timestamp": "2025-11-24T20:15:00-03:00",
  "order_id": "ORD-2025-0124",
  "table_number": "Mesa 8",
  "session_start": "2025-11-24T18:30:00-03:00",
  "session_end": "2025-11-24T20:15:00-03:00",
  "duration_minutes": 105,
  "opened_by": {
    "id": 72,
    "name": "João Silva"
  },
  "closed_by": {
    "id": 96,
    "name": "Maria Santos"
  },
  "items": [
    {
      "timestamp": "2025-11-24T18:35:00-03:00",
      "employee_id": 72,
      "name": "Focaccia",
      "quantity": 1,
      "price": 19.00
    },
    {
      "timestamp": "2025-11-24T18:35:00-03:00",
      "employee_id": 72,
      "name": "Agua com Gas",
      "quantity": 2,
      "price": 11.00
    },
    {
      "timestamp": "2025-11-24T18:45:00-03:00",
      "employee_id": 72,
      "name": "Carbonara Classica",
      "quantity": 1,
      "price": 85.00
    },
    {
      "timestamp": "2025-11-24T19:50:00-03:00",
      "employee_id": 96,
      "name": "Tiramisu",
      "quantity": 2,
      "price": 36.00
    }
  ],
  "totals": {
    "subtotal": 187.00,
    "tip": 24.31,
    "tax": 18.70,
    "total": 230.01
  },
  "payment": {
    "method": "VISA_CREDIT",
    "transaction_id": "TXN-2025-5678",
    "fiscal_receipt": "NFe35251133111140001168650020000762241540579084"
  }
}

✅ Response Codes¶

Success Responses¶

200 OK¶

Webhook successfully received and stored.

Response Body:

{
  "status": "success",
  "event_id": "019ab6ed-150a-7be1-920f-ab82305e5d41",
  "message": "Webhook received and stored",
  "received_at": "2025-11-24T18:30:00.123Z"
}

Response Fields: | Field | Type | Description | |-------|------|-------------| | status | string | Always "success" | | event_id | UUID | Unique identifier for this webhook event | | message | string | Confirmation message | | received_at | ISO 8601 | Server timestamp (UTC) |

Error Responses¶

401 Unauthorized¶

Invalid or inactive webhook token.

Response Body:

{
  "detail": "Invalid or inactive webhook token"
}

413 Payload Too Large¶

Request body exceeds 10MB limit.

Response Body:

{
  "detail": "Payload too large. Max size: 10MB"
}

429 Too Many Requests¶

Rate limit exceeded.

Response Body:

{
  "detail": "Rate limit exceeded. Please retry after 1 second"
}

500 Internal Server Error¶

Server-side processing error.

Response Body:

{
  "detail": "Failed to process webhook"
}

503 Service Unavailable¶

Service temporarily unavailable.

Response Body:

{
  "detail": "Service temporarily unavailable"
}

🔄 Retry Strategy¶

Recommended Retry Logic¶

import time
import requests

def send_webhook_with_retry(url, payload, max_retries=3):
    """
    Send webhook with exponential backoff retry
    """
    for attempt in range(max_retries):
        try:
            response = requests.post(
                url,
                json=payload,
                timeout=10
            )

            if response.status_code == 200:
                return response.json()

            # Don't retry client errors
            if 400 <= response.status_code < 500:
                if response.status_code != 429:  # Except rate limit
                    raise Exception(f"Client error: {response.status_code}")

            # Retry server errors and rate limits
            if response.status_code in [429, 500, 502, 503, 504]:
                if attempt < max_retries - 1:
                    # Exponential backoff: 1s, 2s, 4s
                    wait_time = 2 ** attempt
                    time.sleep(wait_time)
                    continue

            raise Exception(f"HTTP {response.status_code}: {response.text}")

        except requests.exceptions.Timeout:
            if attempt < max_retries - 1:
                wait_time = 2 ** attempt
                time.sleep(wait_time)
                continue
            raise
        except requests.exceptions.ConnectionError:
            if attempt < max_retries - 1:
                wait_time = 2 ** attempt
                time.sleep(wait_time)
                continue
            raise

    raise Exception(f"Max retries ({max_retries}) exceeded")

Retry Guidelines¶

Error Type	Retry?	Strategy
`401 Unauthorized`	No	Check token validity
`413 Payload Too Large`	No	Reduce payload size
`429 Rate Limited`	Yes	Wait 1 second minimum
`500 Server Error`	Yes	Exponential backoff
`503 Unavailable`	Yes	Exponential backoff
Network timeout	Yes	Exponential backoff
Connection error	Yes	Exponential backoff

📝 Field Data Types¶

String Fields¶

UTF-8 encoded
Maximum 65,535 characters
Examples: table_number, order_id, name

Numeric Fields¶

Decimals: Up to 2 decimal places for currency
Integers: 32-bit signed integers
Examples: price (19.00), employee_id (72)

Timestamp Fields¶

ISO 8601 format with timezone
Format: YYYY-MM-DDTHH:MM:SS±HH:MM
Example: 2025-11-24T18:30:00-03:00

Array Fields¶

JSON arrays
Can be empty []
Maximum 1000 items per array

Object Fields¶

JSON objects
Can be null or empty {}
Nested up to 5 levels deep

🌐 Supported Timezones¶

Include timezone information in all timestamps. Supported formats:

Offset format: 2025-11-24T18:30:00-03:00 (recommended)
UTC format: 2025-11-24T21:30:00Z
Named timezone: Not recommended, use offset instead

Common timezone offsets: - São Paulo: -03:00 - New York: -05:00 (EST) / -04:00 (EDT) - London: +00:00 (GMT) / +01:00 (BST) - Tokyo: +09:00

🧪 Testing¶

Test Endpoint¶

Add ?env=dev to test without affecting production data:

https://api.emiliavision.com/webhooks/v1/pos/{token}?env=dev

Test with cURL¶

# Minimal test
curl -X POST \
  "https://api.emiliavision.com/webhooks/v1/pos/YOUR_TOKEN?env=dev" \
  -H "Content-Type: application/json" \
  -d '{
    "event": "test",
    "table_number": "Test Table",
    "timestamp": "2025-11-24T12:00:00-03:00"
  }'

# Complete session test
curl -X POST \
  "https://api.emiliavision.com/webhooks/v1/pos/YOUR_TOKEN?env=dev" \
  -H "Content-Type: application/json" \
  -d '{
    "event": "session_complete",
    "order_id": "TEST-001",
    "table_number": "Mesa Test",
    "session_start": "2025-11-24T12:00:00-03:00",
    "session_end": "2025-11-24T13:00:00-03:00",
    "items": [
      {
        "timestamp": "2025-11-24T12:10:00-03:00",
        "employee_id": 1,
        "name": "Test Item",
        "quantity": 1,
        "price": 10.00
      }
    ],
    "totals": {
      "subtotal": 10.00,
      "tip": 1.30,
      "tax": 1.00,
      "total": 12.30
    }
  }'

Validation Tool¶

Coming soon: Online webhook tester at https://test.emiliavision.com/webhook

📋 Integration Checklist¶

Minimum Required Fields¶

event - Event type
table_number - Table identifier (CRITICAL!)
timestamp - When event occurred
order_id - Your unique identifier

Highly Recommended Fields¶

session_start - When table opened
session_end - When check closed
employee_id - Who performed actions
items[].timestamp - When each item ordered
totals - Financial summary

Nice to Have¶

employee_name - Human-readable names
item_category - Menu categorization
fiscal_receipt - Tax document number
payment.method - How customer paid

🆘 Support¶

Getting Help¶

Technical Issues: team@emiliavision.com
Integration Questions: team@emiliavision.com
Token Requests: team@emiliavision.com

Response Times¶

Critical issues: < 2 hours
Integration support: < 4 hours
Token generation: < 24 hours

Common Issues¶

Issue	Solution
401 errors	Verify token is correct and active
Timezone confusion	Always include timezone offset in timestamps
Missing table numbers	This is critical - ensure every payload has it
No employee IDs	Check if your POS tracks who takes orders

Version History - v2.0 (2025-11) - Added environment parameter, enhanced examples - v1.0 (2025-10) - Initial release

EmiliaVision Webhook API Reference¶

🔑 Authentication¶

Webhook Token¶

Token Security¶

🌍 Environments¶

Production (Default)¶

Development/Testing¶

📨 Request Specification¶

HTTP Method¶

Headers¶

Request Limits¶

📊 Event Types¶

1. session_opened¶

2. items_added¶

3. items_removed¶

4. session_closed¶

5. session_complete¶

✅ Response Codes¶

Success Responses¶

200 OK¶

Error Responses¶

401 Unauthorized¶

413 Payload Too Large¶

429 Too Many Requests¶

500 Internal Server Error¶

503 Service Unavailable¶

🔄 Retry Strategy¶

Recommended Retry Logic¶

Retry Guidelines¶

📝 Field Data Types¶

String Fields¶

Numeric Fields¶

Timestamp Fields¶

Array Fields¶

Object Fields¶

🌐 Supported Timezones¶

🧪 Testing¶

Test Endpoint¶

Test with cURL¶

Validation Tool¶

📋 Integration Checklist¶

Minimum Required Fields¶

Highly Recommended Fields¶

Nice to Have¶

🆘 Support¶

Getting Help¶

Response Times¶

Common Issues¶

1. `session_opened`¶

2. `items_added`¶

3. `items_removed`¶

4. `session_closed`¶

5. `session_complete`¶