x402 Services
| Rank | Service | Category | Chains | Volume · 30d | Transactions · 30d | Buyers |
|---|---|---|---|---|---|---|
| — | SFtunes tapes for agents sftunes.com Hand-made music curation from real people: public tapes and public Top 10 lists with per-track liner notes and canonical music-service links. Paid endpoints… | Data | Base | $0.08 | 8 | 7 |
| — | Sidera shadowharness.com Sidera agent guide: https://shadowharness.com/sidera/llm/ Start with the overview, then follow the sample, pricing and ordering sections. Turn supported… | AI | Base, Solana | $3.40 | 10 | 3 |
| — | shelf.thirdmade.net shelf.thirdmade.net A data service providing paid probing, verification, lookup, generation, analysis, and security endpoints. | Data | Base | $0.00 | 0 | 0 |
| — | ShieldAPI vainplex.dev x402-native security intelligence API for AI agents. Use ShieldAPI as the paid security/trust preflight before an agent pays, connects to MCP, installs… | AI | Base | $0.026 | 13 | 9 |
| — | Trading Intelligence API signal-engine-production-d88d.up.railway.app Provides cryptocurrency trading intelligence based on RSI, VWAP, and EMA strategy signals. | Data | Base | $0.00 | 0 | 0 |
| — | Signal Foundry signal-foundry.replit.app Provides paid signal data through an API. | Data | Base | $0.05 | 1 | 2 |
| — | Keelbase Signal API keelbase.io OpenAPI 3.1 specification for the live Keelbase Signal free discovery routes and x402-paid data products. | Data | Base | $0.09 | 3 | 2 |
| — | Signal Oracle oracles-production.up.railway.app Change-intelligence feeds sold per-call to AI agents via x402 — first-party synthesized from public-domain government and developer APIs (not a wrapper over… | Data | Base | $0.40 | 12 | 7 |
| — | Signals crypto-threat-signals-api.onrender.com Machine-consumable crypto risk signals for AI agents and automated systems. | Data | Base | $0.02 | 2 | 2 |
| — | Kraken Crypto Signals signals.nsgoods.org Pay-per-call crypto market-state data (BUY/SELL/HOLD + confidence) for AI agents over x402 on Base. | AI | Base | $0.00 | 0 | 0 |
| — | SingIt Ask singitai.app SingIt Ask: one answer from deepseek-v4.1-flash, OpenAI-compatible. Paid per answer; charged only when the answer came back. | AI | Base, Solana | $0.0061 | 4 | 2 |
| — | Skopos tryskopos.xyz Non-custodial, cross-chain crypto copilot — live prices, swap/bridge quotes, token safety, smart-money intel, DeFi yield, prediction markets, DAO treasuries… | Data | Base | $0.10 | 10 | 7 |
| — | Skowron Compliance Gateway skowron-compliance-gateway.mattskowronis.workers.dev Compliance checks for agents before they onboard, pay, or transact. OFAC sanctions screening, LEI/legal entity verification, EU VAT/VIES validation, EU AI Act… | AI | Base | $0.00 | 0 | 0 |
| — | Sleuth AI sleuthagent.ai Pay-per-call on-chain investigation & blockchain-forensics API for AI agents. Token holder analysis, whale detection, early-bird and insider cohorts, trader… | AI | Base, Solana | $0.00 | 0 | 0 |
| — | SmartFetch smartfetch-production-ea53.up.railway.app Read, fetch, scrape, extract, and browser-render public webpages into agent-ready text, Markdown, links, and metadata. | AI | Base | $0.00 | 0 | 0 |
| — | smidgen.io bizfission.com No endpoint details are provided for this service. | Other | Base | $0.10 | 1 | 1 |
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