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Update Alpha Vantage free tier documentation 

Clarify that the free API key is typically sufficient for TradingAgents thanks to Alpha Vantage's open-source support program, and only recommend premium upgrade if rate-limiting is encountered.

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Co-Authored-By: Claude <noreply@anthropic.com>
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luohy15 2025-10-06 17:13:00 +08:00
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@ -127,7 +127,7 @@ cp .env.example .env
# Edit .env with your actual API keys # Edit .env with your actual API keys
``` ```
**Note:** The default configuration uses [Alpha Vantage](https://www.alphavantage.co/) for fundamental and news data. You can get a free API key from their website, or upgrade to [Alpha Vantage Premium](https://www.alphavantage.co/premium/) for higher rate limits and more stable access. If you prefer to use OpenAI for these data sources instead, you can modify the data vendor settings in `tradingagents/default_config.py`. **Note:** The default configuration uses [Alpha Vantage](https://www.alphavantage.co/) for fundamental and news data. You can get a free API key from their website. The free API key is typically sufficient for performing complex tasks with TradingAgents thanks to the provider's open-source support program. If you still encounter rate-limiting behaviors, you may consider upgrading to [Alpha Vantage Premium](https://www.alphavantage.co/premium/) for higher rate limits. If you prefer to use OpenAI for these data sources instead, you can modify the data vendor settings in `tradingagents/default_config.py`.
### CLI Usage ### CLI Usage