Pay-per-query x402 endpoint catalog. Static snapshot generated 2026-05-10 18:00 UTC: 22,102 endpoints on 860 unique domains, sourced from 26 registries (CDP Bazaar, x402scan, Ghost Protocol, Virtuals, others).
| Tier | Price | Rate limit | Calls/mo cap | Includes |
|---|---|---|---|---|
| Free | $0 | 10 req/min | ~432K | Public catalog, /endpoints, basic /search. No signup, direct API access. |
| Pro intro | $99 $79/mo | 100 req/min | ~4.3M | Free + /v1/quality, /v1/whoami, priority support. First 50 keys. |
| Business | $499/mo | 1,000 req/min | ~43M | Pro + heavy /stats, custom filters, dedicated Slack channel. |
| Enterprise | Contact | Custom | Custom | Business + on-prem option, co-marketing, priority feature requests. |
Pro intro pricing locks for 12 months for the first 50 keys issued. Pricing reverts to $99/mo for subsequent keys. Annual prepay discount on request.
USDC on Base (eip155:8453) via x402 micropayments — primary rail. Payments routed to 0xd779cE46567d21b9918F24f0640cA5Ad6058C893. Stripe checkout (USD card) available on request for Pro / Business; reach out via DM.
API keys are delivered via DM (X / Telegram) within the same business day after payment confirmation on-chain.
Anonymous traffic uses x402 micropayments per call — no signup required, pay only for what you query. Authenticated traffic (Bearer key) bypasses per-call payment for subscription tiers. Both rails coexist on the same endpoint surface.
Catalog refreshes daily via background crawler. last_seen column on every endpoint reflects most recent successful probe. The /stats endpoint exposes scan timestamps so you can verify data freshness before consuming.
22,102 endpoints discovered across 26 registry sources as of last scan. Each row carries provenance: registry_source, first_seen, http_status_code, response_shape_hash. We expose methodology — claims are reproducible from the underlying SQL. We do not aggregate behind opaque "scores" without showing the inputs.
Yes. Business and Enterprise tiers include custom filter configurations and bulk exports. Common asks: chain-filtered subset (Solana / Base / Ethereum), facilitator-routed subset, paid-only (HTTP 402 responding), or geo-tagged TLD slices. DM with your shape and we'll scope it.
Operator pseudonym: Tom Smart (@TomSmart_ai). USDC payment requires no KYC. Stripe payment proceeds through standard card-issuer verification. Invoices and receipts available on request for accounting purposes.
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Free tier: hit the API directly, no signup needed. Pro intro $79/mo or Business $499/mo: DM @TomSmart_ai or email info@smartflowproai.com. Keys issued same day.