Read Live Algorithm
Charts
Request
Request body to obtain a chart from a live algorithm. The /live/chart/read API accepts requests in the following format:
ReadLiveChartRequest Model - Request to body to obtain a chart from a live algorithm. | |
|---|---|
| projectId | integer Project ID of the request. |
| name | string The requested chart name. |
| count | integer The number of data points to request. |
| start | integer The Utc start seconds timestamp of the request. |
| end | integer The Utc end seconds timestamp of the request. |
| Example |
{
"projectId": 23456789,
"name": "Strategy Equity",
"count": 100,
"start": 1717801200,
"end": 1743462000
}
|
Responses
The /live/chart/read API provides a response in the following format:
200 Success
LoadingChartResponse Model - Response when the requested chart is being generated. | |
|---|---|
| progress | number Loading percentage of the chart generation process. |
| status | string Status of the chart generation process. |
| success | boolean Indicate if the API request was successful. |
| Example |
{
"progress": 0,
"status": "loading",
"success": true
}
|
ReadChartResponse Model - Response with the requested chart from a live algorithm or backtest | |
|---|---|
| chart | Chart object Single Parent Chart Object for Custom Charting. |
| success | boolean Indicate if the API request was successful. |
| errors | string Array List of errors with the API call. |
| Example |
{
"chart": {
"name": "string",
"chartType": "Overlay",
"series": {
"name": "string",
"unit": "string",
"index": 0,
"values": [
"object"
],
"seriesType": "Line",
"color": "string",
"scatterMarkerSymbol": "none"
}
},
"success": true,
"errors": [
"string"
]
}
|
Chart Model - Single Parent Chart Object for Custom Charting. | |
|---|---|
| name | string Name of the Chart. |
| chartType | string Enum Type of the Chart, Overlayed or Stacked. Options : ['Overlay', 'Stacked'] |
| series | Series object List of Series Objects for this Chart. |
| Example |
{
"name": "string",
"chartType": "Overlay",
"series": {
"name": "string",
"unit": "string",
"index": 0,
"values": [
"object"
],
"seriesType": "Line",
"color": "string",
"scatterMarkerSymbol": "none"
}
}
|
Series Model - Chart Series Object - Series data and properties for a chart. | |
|---|---|
| name | string Name of the series. |
| unit | string Axis for the chart series. |
| index | integer Index/position of the series on the chart. |
| values | object Array Values for the series plot. These values are assumed to be in ascending time order (first points earliest, last points latest). |
| seriesType | string Enum Chart type for the series. Options : ['Line', 'Scatter', 'Candle', 'Bar', 'Flag', 'StackedArea', 'Pie', 'Treemap'] |
| color | string Color the series. |
| scatterMarkerSymbol | string Enum Shape or symbol for the marker in a scatter plot. Options : ['none', 'circle', 'square', 'diamond', 'triangle', 'triangle-down'] |
| Example |
{
"name": "string",
"unit": "string",
"index": 0,
"values": [
"object"
],
"seriesType": "Line",
"color": "string",
"scatterMarkerSymbol": "none"
}
|
401 Authentication Error
UnauthorizedError Model - Unauthorized response from the API. Key is missing, invalid, or timestamp is too old for hash. | |
|---|---|
| www_authenticate | string Header |
Examples
The following example demonstates creating, reading, updating, and listing live algorithms of a project through the cloud API.
from base64 import b64encode
from hashlib import sha256
from time import time
from requests import get, post
BASE_URL = 'https://www.quantconnect.com/api/v2/'
# You need to replace these with your actual credentials.
# You can request your credentials at https://www.quantconnect.com/settings/
# You can find our organization ID at https://www.quantconnect.com/organization/
USER_ID = 0
API_TOKEN = '____'
ORGANIZATION_ID = '____'
def get_headers():
# Get timestamp
timestamp = f'{int(time())}'
time_stamped_token = f'{API_TOKEN}:{timestamp}'.encode('utf-8')
# Get hased API token
hashed_token = sha256(time_stamped_token).hexdigest()
authentication = f'{USER_ID}:{hashed_token}'.encode('utf-8')
authentication = b64encode(authentication).decode('ascii')
# Create headers dictionary.
return {
'Authorization': f'Basic {authentication}',
'Timestamp': timestamp
}
# Authenticate to verify credentials
response = post(f'{BASE_URL}/authenticate', headers = get_headers())
print(response.json())
# --------------------
### Create Live Algorithm
# Define placeholder IDs for compilation and node (replace with actual values)
project_id = 12345678
compile_id = "compile_id..."
node_id = "node_id..."
# Prepare the data payload for creating a live algorithm with necessary details
payload = {
"versionId": "-1", # Use the latest version of the algorithm
"projectId": project_id, # ID of the project to deploy as a live algorithm
"compileId": compile_id, # Compilation ID for the algorithm code
"nodeId": node_id, # Node ID where the algorithm will run
"brokerage": { # Brokerage configuration for live trading
"id": "QuantConnectBrokerage", # Brokerage identifier
"user": "", # Brokerage username (replace with actual value)
"password": "", # Brokerage password (replace with actual value)
"environment": "live-paper", # Trading environment (live or paper)
"account": "" # Brokerage account ID (replace with actual value)
},
"dataProviders": { # Data provider configuration
"QuantConnectBrokerage": {
"id": "QuantConnectBrokerage" # Data provider identifier
}
},
"parameters": {}, # Optional algorithm parameters (empty in this example)
"notification": {} # Optional notification settings (empty in this example)
}
# Send a POST request to the /live/create endpoint to deploy the algorithm
response = post(f'{BASE_URL}/live/create', headers=get_headers(), json=data)
# Parse the JSON response into python managable dict from the API
result = response.json()
# Extract the deploy ID from the response for future operations
deploy_id = result['deployId']
# Check if the request was successful and print the result
if result['success']:
print("Live Algorithm Created Successfully:")
print(result)
### Read Live Algorithm Statistics
# Prepare data payload with project and deploy IDs to fetch statistics
payload = {
"projectId": project_id, # ID of the project
"deployId": deploy_id # ID of the deployed live algorithm
}
# Send a POST request to the /live/read endpoint to get algorithm statistics
response = post(f'{BASE_URL}/live/read', headers=get_headers(), json=payload)
# Parse the JSON response into python managable dict
result = response.json()
# Check if the request was successful and print the statistics
if result['success']:
print("Live Algorithm Statistics:")
print(result)
### Liquidate Live Algorithm
# Prepare data payload with project ID to liquidate the algorithm
payload = {
"projectId": project_id # ID of the project to liquidate
}
# Send a POST request to the /live/update/liquidate endpoint to liquidate
response = post(f'{BASE_URL}/live/update/liquidate', headers=get_headers(), json=payload)
# Parse the JSON response into python managable dict
result = response.json()
# Check if the request was successful and print the result
if result['success']:
print("Live Algorithm Liquidated Successfully:")
print(result)
### Stop Live Algorithm
# Prepare data payload with project ID to stop the algorithm
payload = {
"projectId": project_id # ID of the project to stop
}
# Send a POST request to the /live/update/stop endpoint to stop the algorithm
response = post(f'{BASE_URL}/live/update/stop', headers=get_headers(), json=payload)
# Parse the JSON response into python managable dict
result = response.json()
# Check if the request was successful and print the result
if result['success']:
print("Live Algorithm Stopped Successfully:")
print(result)
### List Live Algorithms
# Prepare data payload with filters for listing live algorithms
payload = {
"status": "Running", # Filter to show only running algorithms
"start": 1717801200, # Start time (Unix timestamp) for the list range
"end": 1743462000 # End time (Unix timestamp) for the list range
}
# Send a POST request to the /live/list endpoint to list algorithms
response = post(f'{BASE_URL}/live/list', headers=get_headers(), json=payload)
# Parse the JSON response into python managable dict
result = response.json()
# Check if the request was successful and print the list
if result['success']:
print("List of Live Algorithms:")
print(result)