> For the complete documentation index, see [llms.txt](https://docs.openalgo.in/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openalgo.in/installation-guidelines/getting-started/mac-os-installation/environmental-variables.md).

# Environmental Variables

Rename the `.sample.env` file located in `openalgo` folder to `.env`

Update the `.env` with your specific configurations as shown in the provided template.

### Sample Environmental File

```python
# Broker Configuration
BROKER_API_KEY = 'YOUR_BROKER_API_KEY'
BROKER_API_SECRET = 'YOUR_BROKER_API_SECRET'

REDIRECT_URL = 'http://127.0.0.1:5000/<broker>/callback'  # Change if different

# Valid Brokers Configuration
VALID_BROKERS = 'fivepaisa,aliceblue,angel,dhan,fyers,icici,kotak,shoonya,upstox,zebu,zerodha'

# Security Configuration
# IMPORTANT: Generate new random values for both keys during setup!

# OpenAlgo Application Key
APP_KEY = '3daa0403ce2501ee7432b75bf100048e3cf510d63d2754f952e93d88bf07ea84'

# Security Pepper - Used for hashing/encryption of sensitive data
# This is used for:
# 1. API key hashing
# 2. User password hashing
# 3. Broker auth token encryption
# Generate a new random string during setup using: python -c "import secrets; print(secrets.token_hex(32))"
API_KEY_PEPPER = 'a25d94718479b170c16278e321ea6c989358bf499a658fd20c90033cef8ce772'

# OpenAlgo Database Configuration
DATABASE_URL = 'sqlite:///db/openalgo.db' 

# OpenAlgo Ngrok Configuration
NGROK_ALLOW = 'FALSE' 

# OpenAlgo Hosted Server (Custom Domain Name) or Ngrok Domain Configuration
# Change to your custom domain or Ngrok domain
HOST_SERVER = 'http://127.0.0.1:5000'  

# OpenAlgo Flask App Host and Port Configuration
# For 0.0.0.0 (accessible from other devices on the network)
# Flask Environment - development or production
FLASK_HOST_IP='127.0.0.1'  
FLASK_PORT='5000'  
FLASK_DEBUG='False' 
FLASK_ENV='development'

# OpenAlgo Rate Limit Settings
LOGIN_RATE_LIMIT_MIN = "5 per minute" 
LOGIN_RATE_LIMIT_HOUR = "25 per hour"
API_RATE_LIMIT="10 per second"

# OpenAlgo API Configuration

# Required to give 0.5 second to 1 second delay between multi-legged option strategies
# Single legged orders are not affected by this setting.
SMART_ORDER_DELAY = '0.5'

# Session Expiry Time (24-hour format, IST)
# All user sessions will automatically expire at this time daily
SESSION_EXPIRY_TIME = '03:00'

# Note: OpenAlgo version is now managed in utils/version.py
```

###


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.openalgo.in/installation-guidelines/getting-started/mac-os-installation/environmental-variables.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.