coingecko

Call GET /simple/networks/solana/token_price/{address} with your API key in the x-cg-demo-api-key or x-cg-pro-api-key header. You can batch up to 30 addresses on the demo plan or 100 on pro, and optionally include market cap, 24h volume, and price change.

Use GET /networks/solana/pools/{pool_address}/ohlcv/{timeframe} where timeframe is day, hour, or minute. Set aggregate (1, 5, 15 for minute; 1, 4, 12 for hour) and limit up to 1000 candles, returned as timestamp, open, high, low, close, volume arrays.

The demo API is free with 30 calls per minute and uses api.coingecko.com with the x-cg-demo-api-key header. The pro API offers 500-1000 calls per minute, uses pro-api.coingecko.com with x-cg-pro-api-key, and allows more addresses per batch request.

A 429 error means you exceeded your plan's rate limit, such as 30 calls per minute on the demo tier. Implement a sliding-window rate limiter, batch token requests into single calls, and cache frequently accessed data to stay within limits.

Market cap is null when CoinGecko has not verified the token's supply data. Use the FDV value as a fallback or pass the mcap_fdv_fallback=true query parameter to automatically substitute FDV when market cap is unavailable.

Yes, use the GET /pools/megafilter endpoint with networks=solana and a comma-separated dexes parameter such as raydium or pump-fun. You can also set minimum liquidity and 24h volume thresholds and sort by pool creation date.