Rate limiting
Understand the rate limits for Hiro APIs and the STX Faucet.
API rate limits
The following rate-limits (in requests per minute, or RPM) are applicable for all Hiro APIs:
| API key | Rate Limit |
|---|---|
| No | 150 requests per minute (RPM) per client IP, for unauthenticated traffic |
| Yes | 5,000 requests per minute (RPM), regardless of origin IP, with an authenticated API key |
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STX Faucet rate limits
Note: this faucet is for Stacks testnet and provides testnet STX, which has no monetary value.
| Type | Rate Limit |
|---|---|
| Stacking requests | 1 request per 2 days |
| Regular STX requests | 1 request per minute (RPM) |