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API Keys

All API requests require authentication via an API key. Pass your key in the X-API-KEY request header.
curl https://api.llmquant.com/prices/equity/historical?ticker=AAPL&period=day \
  -H "X-API-KEY: your_api_key_here"

Getting Your API Key

  1. Sign up at llmquant.com
  2. Navigate to the Dashboard
  3. Copy your API key from the API Keys section

Error Codes

StatusMeaning
200Success
400Bad request — invalid or missing parameters
401Unauthorized — invalid or missing API key
402Payment required — endpoint requires a paid plan
404Not found — ticker or resource does not exist
429Rate limit exceeded

Rate Limits

Rate limits vary by plan. If you exceed your limit, you will receive a 429 response. Contact us to discuss higher limits.