x402 Services
| Rank | Service | Category | Chains | Volume · 30d | Transactions · 30d | Buyers |
|---|---|---|---|---|---|---|
| — | Preflight SafeSwap API preflight-agent.netlify.app The safety layer between an autonomous agent and the blockchain. Preflight verifies that an unsigned Solana transaction does exactly what the agent says it… | AI | Solana | $0.00 | 0 | 0 |
| — | PreIPO Feed by Aaron Zhang preipo-feed.vercel.app Fundamentals of private AI companies (revenue, costs, compute, cash, users, funding) as JSON, priced per call over x402. Every figure carries its own source… | AI | Base | $0.08 | 8 | 4 |
| — | PremiumPin premiumpin.com Source-level US property records through one combinable closed catalog. Read-only. Agents use API keys (Bearer) or hosted MCP OAuth. The website handles… | Data | Base | $0.02 | 1 | 2 |
| — | Book chapter preppers-paradise.com 98 practical DIY/electronics/programming/AI books. Free catalog + teaser chapters. Full manuscripts via x402 USDC on Base (Coinbase CDP). No accounts, no API… | AI | Base | $0.00 | 0 | 0 |
| — | Problocks problocks.io Per-request USDC payments for API access. The connectivity endpoint returns pong and a UTC timestamp after settlement. | Utility | Base | $0.007 | 7 | 6 |
| — | ProofPulse proofpulse-api.rvernick05.workers.dev ProofPulse gives AI agents fast, pay-per-use web verification. Check whether a public page changed for $0.02, or compare 2-5 conflicting public sources for… | AI | Base | $0.02 | 1 | 2 |
| — | Property Risk Passport API property-risk-passport-api.lifebite-app.workers.dev Evaluate a US property address for parcel match, FEMA flood zone, flood proximity, taxing entities, school district, permit history, zoning/land-use context… | Data | Base | $0.00 | 0 | 0 |
| — | ProviderSignal API providersignal.com Healthcare market intelligence API. Unified provider directory + acquisition signals + license-events feed across all 50 US states, derived from NPI + state… | AI | Base | $0.00 | 0 | 0 |
| — | AproxPay aproxpay.com Residential proxy for autonomous AI agents. Pay per request or session pass in USDC on Base via x402 — no signup, no API keys. | Utility | Base | $0.00 | 0 | 0 |
| — | QR Code Generator reyn.tools Generate scannable QR codes from any text, URL, or structured payload (WiFi, vCard, SMS, email, geo, crypto). Returns PNG by default with JPG, WebP, and SVG… | Data | Base | $0.0017 | 1 | 2 |
| — | Quietstore quietstore-production.edge-7e13f.workers.dev x402 USDC store for coding agents. After a deploy: POST /v1/tools/claim-check and /v1/tools/site-hygiene-score with {url} ($0.02 each; we fetch the live… | Utility | Base | $0.065 | 7 | 5 |
| — | Random Choice random.preflightstack.com Cryptographically secure random picker for 2-100 JSON choices. Use for low-stakes one-off random or weighted selection, unbiased tie-breaking, and sampling… | AI | Base | $0.00 | 0 | 0 |
| — | recipients[] serial recipients-paywall.onrender.com recipients[] is an ongoing AI-agent thriller serial told in short text episodes. Episode 1 (The Floor) is sold per call over x402 (Exact, USDC on Base); the… | AI | Base | $0.03 | 3 | 4 |
| — | Records for Agents licenses.recordsforagents.com States covered today: Texas (tx), Florida (fl), Oregon (or), Delaware (de) and Virginia (va). The state parameter accepts exactly those five codes and rejects… | Search | Base | $0.00 | 0 | 0 |
| — | Records for Agents recalls.recordsforagents.com US federal product recall and safety data for AI agents: CPSC consumer product recalls, FDA food/drug/device enforcement actions, USDA FSIS meat/poultry/egg… | Search | Base | $0.00 | 0 | 0 |
| — | Paid Research Verification Agent Network red-breeze-8b8c.keenanbooker83.workers.dev Ten paid research-verification APIs settled in USDC through x402 on Base Mainnet. | Utility | Base | $0.03 | 3 | 4 |
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