Understand the Steam rate limit
Steam throttles per IP address. A handful of inventory or market requests per minute can be enough to trigger 429 Too Many Requests responses, and the block can last for hours.
"Request failed with status code 429" means Steam is rate-limiting your IP. Understand why it happens on inventory, market and profile requests — and how to make it stop.
Steam's public endpoints are undocumented and aggressively rate-limited. Error 429 is Steam telling you to slow down — these are the three ways out.
Steam throttles per IP address. A handful of inventory or market requests per minute can be enough to trigger 429 Too Many Requests responses, and the block can last for hours.
Cache every response you can, add delays between requests and never fetch the same inventory twice in a short window. This helps, but it does not scale for production traffic.
Steamwebapi buffers, caches and retries Steam requests across its own infrastructure, so your application receives inventory, market and profile JSON without 429 errors.
Create a free API key and fetch inventories, prices and profiles through endpoints built to avoid status code 429.
Read the API documentation