Pricing
Two rails: pay-per-call via x402 (no signup, USDC on Base) or a self-serve monthly key.
x402 pay-per-call
Premium MCP tools settle $0.01 USDC on Base mainnet per call — keyless. Free preview included on every call; pay to unlock the full result. Receiving address:
0x38134a7F97636E26365Fb17405566595B917a341 (receive-only). See /x402.Self-serve key tiers
| Tier | Price | Quota | History | Alerts |
|---|---|---|---|---|
| Free | free | 50/day | current | 0 alerts |
| Self-serve | $29/mo | 10,000/day | full | 10 alerts |
| Pro | $99/mo | 50,000/day | full | 50 alerts |
Mint a free starter key: curl -X POST https://aiapi.dropwatchhq.com/v1/signup. Crypto/invoice for paid tiers: USDC Base 0x38134a7F97636E26365Fb17405566595B917a341 · USDT TRC20 TNvb5tyrzWZW9iNUwQ6TTiY87MGLs1Cgsi · invoice@dropwatchhq.com.