Rate Limits

Rate limits are applied per API key using a sliding window counter. All chains share the same rate limit — your plan's limit is the total across all chains.

Plan Comparison

Rate Limit Response

When you exceed your rate limit, the API returns HTTP 429:

HTTP/1.1 429 Too Many Requests
Retry-After: 1

{
  "error": "Rate limited",
  "limit": 2,
  "plan": "Free"
}

Best Practices

• Implement exponential backoff when you receive 429 responses
• Cache responses where possible (e.g. eth_chainId never changes)
• Batch requests using eth_call with Multicall3 instead of making many individual calls
• Use WebSocket subscriptions instead of polling for real-time data
• Use separate API keys for different applications to track usage independently

Payments

Upgrade from your dashboard. We accept payments in:

• ETH (Ethereum, Base, Arbitrum)
• BNB (BSC)
• USDT (Ethereum, BSC, Arbitrum)
• USDC (Ethereum, BSC, Base, Arbitrum)