0x Swap API
0x.org
0x is a DEX aggregation API for token swaps. Its agent endpoint sells swap price and quote calls per request over x402, with no API key.
xrpl-utilities.io
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XRP Ledger data services for agents and institutions: wallet behavior, network flows, whale events, permissioned domains, RWA vaults and ETF flows. Free on the web, paid per call for agents.
https://sentinel.xrpl-utilities.io/scanMeasuring since Oct 27, 2026: 14 daily checks so far, so these numbers are still thin.
Trust score100/100Strong
From 10 daily checks since Oct 30, 2026, last 30 days. Formula 1.0-median30.
How the score works: uptime (40 points), how often the endpoint returned a valid x402 payment request (40), whether the price in it matches the listed price (10) and median response time of the up checks (10: under 500 ms 10, 500–999 ms 7, 1–2 s 4, slower 1, 0 if the last check was not up). Parts that can’t apply are left out and the score is rescaled. Strong is 90–100, fair 70–89, weak under 70. Paying for Featured, Sponsored or any placement never changes it, and it is not an endorsement. Think it’s wrong? Email hello@youraitools.co and we’ll re-check it.
How we measure: one unpaid check per day of the listing’s example endpoint (POST https://sentinel.xrpl-utilities.io/scan). We never pay and never send a payment header. Up means any answer below HTTP 500 except 404/410 within 8 seconds. Uptime counts those daily checks. Payment never changes these numbers. A technical check, not an endorsement. Raw JSON · schema
Unpaid POST /scan returned HTTP 402 on 2026-10-27 with x402 payment terms: x402 v2, exact, 0.1 USDC on Base (other networks offered: XRPL, at their own amounts or tokens). Price checked via our 402 probe on 2026-10-27 (2 routes probed; other routes may be priced differently). Official site fetched (HTTP 200) on 2026-10-27. Shown on the public Agentic.Market site. Last checked 2026-10-27.
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0x.org
0x is a DEX aggregation API for token swaps. Its agent endpoint sells swap price and quote calls per request over x402, with no API key.
3route.io
Best-priced crypto token swaps for agents, traders and apps: a pay-per-call quote and swap API via x402 or MPP, with no API key or subscription.
47620.xyz
Non-custodial x402 payment gateway on Solana plus a pay-per-call Solana data API (prices, balances, transactions, DEX pairs).
Building an x402 API? Free x402 course + launch help inside
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