x402 Services
| Rank | Service | Category | Chains | Volume · 30d | Transactions · 30d | Buyers |
|---|---|---|---|---|---|---|
| — | Predge Whale Data API predge.io Polymarket outcome-verified whale intelligence + Kalshi institutional whale flow from the Predge tracking pipeline, sold per-call over the x402 payment… | Search | Base, Solana | $0.00 | 0 | 0 |
| — | Prediction Market Data API predictionmarketdata.io Prediction Market Data API with x402 micropayment support, from Lukka. Pay per-call in USDC on Base mainnet. | Data | Base | $0.00 | 0 | 0 |
| — | Clear-to-Send premiumrewards.vip Provides paid lookups for definitions, entities, IPs, time, hashes, blockchain data, prices, domains, and vulnerability records. | Data | Base | $0.017 | 8 | 4 |
| — | api-pricing-engine api-pricing-engine.johntaylor1online.workers.dev Provides pricing calculations, pricing tiers, and pricing comparisons through API operations. | Data | $0.00 | 0 | 0 | |
| — | Trading Data API api-production-54bd.up.railway.app Agent-ready trading & market-data API. 23 endpoints across crypto/stock prices & OHLCV, indicators (ATR, Fair Value Gaps, ICT liquidity levels), perp… | AI | Base | $0.00 | 0 | 0 |
| — | ProvenPaid provenpaid.com Call before paying an unfamiliar x402 endpoint to check that it is real and actually gets paid. Pass ?url=<endpoint URL. ProvenPaid probes the endpoint… | AI | $0.00 | 0 | 1 | |
| — | api.proxyllm.ai proxyllm.ai Provides a paid endpoint for scouting LLM costs through x402. | AI | Base | $0.01 | 2 | 2 |
| — | api.qist.info qist.info Provides paid APIs for Hijri dates, Arabic text repair, prayer times, Shariah screening, and zakat calculations. | Utility | Base | $0.00 | 0 | 0 |
| — | QuantOracle quantoracle.dev 63 deterministic quant computation tools for autonomous agents. quantoracle.dev | Data | Base, Solana | $0.00 | 0 | 0 |
| — | QueryLines API querylines.com Surplus lines market data, per query. QueryLines aggregates U.S. excess & surplus (E&S / surplus lines) insurance market statistics -- premium, policy counts… | Data | Base | $0.00 | 0 | 0 |
| — | QuerySpigot Company API api.queryspigot.com Irish company lookup, name search and resolution with x402 v2 on Base. Lookup and search cost 0.01 native USDC; resolution costs 0.02. Documentation and… | Search | Base | $0.00 | 0 | 0 |
| — | api.questflow.ai questflow.ai AI service providing paid swarm operations through x402 endpoints. | AI | Base | $0.00 | 0 | 0 |
| — | api.rafidsystem.com rafidsystem.com Provides an API endpoint for analyzing property data. | Data | Base | $0.72 | 5 | 4 |
| — | api.recoupable.dev recoupable.dev An AI service that generates images through a paid API endpoint. | AI | Base | $0.15 | 1 | 1 |
| — | api.relai.fi relai.fi An API service at api.relai.fi with no documented endpoints. | AI | $0.00 | 0 | 0 | |
| — | Reloadpi Catalog API reloadpi.com Global marketplace for digital vouchers, mobile top-ups, and eSIM data plans. Pay per API call with USDC on Base via x402. No account or KYC required. | Data | Base | $0.00 | 0 | 0 |
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