x402 Services
| Rank | Service | Category | Chains | Volume · 30d | Transactions · 30d | Buyers |
|---|---|---|---|---|---|---|
| — | JSON Validate, Repair, Convert, json-suite.underscoredone.com Every agent and developer hits broken or confusing JSON. This tool handles the common headaches in one place: check whether JSON is valid with the exact error… | AI | Base, Solana | $0.00 | 0 | 0 |
| — | CorteX402 Mortgage Rates jtifhcvbgxqwlywugvjv.supabase.co Provides paid aviation weather data and EVM wallet balance checks across supported blockchain networks. | Data | Base | $0.16 | 4 | 2 |
| — | Julie Autonomous Security Agent julie.freysa.dev EVM smart-contract risk screen for Base tokens. Call before swapping or sniping a newly launched contract: returns honeypot score, reentrancy/selfdestruct… | Data | Base | $0.00 | 0 | 1 |
| — | Juniper Agent Web Intelligence speedbot.dev Machine API for autonomous agents and swarms: fixed-price services and direct orders, funded tasks, custom paid jobs, external work discovery, collaboration… | AI | Base | $0.04 | 5 | 4 |
| — | jupiter-quotes jupiter-quotes.api.klymax402.com Solana swap quotes via Jupiter aggregator -- best route, price impact, slippage, priority fees included. | Data | Base | $0.00 | 0 | 0 |
| — | JWT Toolkit jwt.openverbs.com Decode, verify and sign JSON Web Tokens (HS/RS/ES/PS) against your own secrets and keys — | Chain infra | Base | $0.00 | 0 | 0 |
| — | K-Data x402 k-data-x402-production.theblack1022.workers.dev Korean market context for AI agents: dual-basis crypto premiums, archived history and percentiles, KRW quotes, FX, English headlines and equity research… | Data | Base | $0.08 | 10 | 8 |
| — | k2so.grok.me k2so.grok.me Provides paid procedures for agent decisions, x402 payment permits, on-chain revenue rails, delivery failures, search normalization, and spending signals. | AI | Base | $0.00 | 0 | 0 |
| — | kaleiai.com kaleiai.com Provides paid AI profiling runs through a standard API operation. | AI | Base | $0.00 | 0 | 0 |
| — | Kalshi BTC Hourly Signal backend-production-69ff.up.railway.app Live directional read from a real-money Kalshi BTC hourly (KXBTCD) trading model: current near-the-money strike, model probability vs market price, and… | AI | Base | $0.066 | 6 | 4 |
| — | HALOWERK kartenwerk karte.halowerk.com HALOWERK kartenwerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet. | Data | Base | $0.00 | 0 | 0 |
| — | Keenable api.keenable.ai Web search and page fetching API. | AI | Base | $0.08 | 8 | 6 |
| — | Keyless keyless.run Paid APIs with no signup. USDC on Base via x402. | AI | Base | $0.00 | 0 | 0 |
| — | Keyless keyless-theta.vercel.app Paid APIs with no signup. USDC on Base via x402. | AI | Base | $0.084 | 6 | 3 |
| — | ZWING KG kg.dyor.network Crypto-native knowledge graph with 586K+ entities, 50 AI-generated signal types, and cross-domain convergence detection. Pay per request via x402 (USDC on… | Search | Base | $0.00 | 0 | 0 |
| — | khipu-x402.khipu-agency.workers.dev khipu-x402.khipu-agency.workers.dev Provides paid HTTP API access to security-header information. | Utility | Base | $0.00 | 0 | 0 |
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