x402 Services
| Rank | Service | Category | Chains | Volume · 30d | Transactions · 30d | Buyers |
|---|---|---|---|---|---|---|
| #113 | Riddle Oracle riddlex402.vercel.app Provides riddles through a paid API endpoint. | Data | Base | $0.136 | 68 | 47 |
| #114 | Interzoid Data Quality and Enrichment APIs api.interzoid.com AI-powered data quality, data matching, data standardization, and data enrichment APIs. Pay per call with USDC via the x402 protocol, or use an Interzoid API… | AI | Base | $2.96 | 100 | 18 |
| #115 | Latest Cars 2026 cars2026.vercel.app Provides access to car data through a paid API. | Data | Base | $0.0979 | 89 | 59 |
| #116 | Biotech Catalyst Sentinel API biotechcatalystsentinel.com Machine-first FDA PDUFA-catalyst feed for AI agents. Upcoming FDA decision dates assembled from SEC 8-K/6-K filings. | Data | Base, Solana | $0.61 | 26 | 10 |
| #117 | Data Lookup API x402-seller.onrender.com Pay-per-call data API for AI agents via the x402 protocol. Every endpoint costs $0.001 in USDC on Base — no accounts, no API keys. Call any endpoint, receive… | Data | Base | $0.189 | 43 | 16 |
| #118 | RegimeShift Clearinghouse regimeshift.xyz Agent-SOFR + on-chain RFQ capital market | Data | Base | $0.051 | 51 | 25 |
| #119 | sendcheck sendcheck-x402.pennyforge.workers.dev Pre-send verification for EVM addresses. One paid HTTP call (x402, USDC on Base, no account, no API key) tells your agent whether an address is safe to send… | Chain infra | Base | $0.52 | 48 | 11 |
| #120 | DubbleBlack dubbleblack.com Behavioral commerce evidence for product recommendations. Powder helps agents determine whether observed commerce behavior supports a product recommendation… | AI | Base | $3.20 | 32 | 9 |
| #121 | Macaroon Network macaroonnetwork.com Pay-per-call scientific search, evidence, validation, and simulation services with explicit provenance and limitations. | AI | Base | $0.297 | 50 | 11 |
| #122 | srch.best srch.best Web search, webpage contents, and normalized structured data for agents, paid per successful request with x402 v2. | Data | Base | $0.2735 | 80 | 6 |
| #123 | n0brains n0brains.com Production crypto intelligence signaling API | Data | Base | $0.236 | 31 | 11 |
| #124 | x402-gateway freeq.one Pay-per-call MCP gateway, 31 tools with per-tool prices on Base: shortlinkcreate=$0.002, shortlinkstats=$0.001, markdown=$0.002, tokenprice=$0.002… | Media | Base | $1.74 | 368 | 7 |
| #125 | Horror Story API horrorstoryapi.vercel.app Provides horror stories through a paid API endpoint. | Media | Base | $0.0975 | 75 | 54 |
| #126 | Straits.live premium data straits.live Machine-payable Strait of Hormuz crisis data for AI agents: the live-AIS vessel manifest, single-vessel multi-body sanctions dossiers (OFAC + UK), a… | AI | Base | $0.93 | 52 | 15 |
| #127 | Crypto Market Signals & Forecast x402.coinopai.com Kronos crypto market intelligence for autonomous agents: hourly signal scores, calibrated price ranges, risk state, decision journals, and outcome audits… | Data | Base | $1.72 | 44 | 11 |
| #128 | NodeFlare nodeflare.app NodeFlare provides paid POST endpoints for blockchain networks through x402. | AI | Base | $0.1213 | 119 | 52 |
Showing 113–128 of 4,060