402rates.com
402rates.com
Evidence-backed tokenized treasury yields and measured cross-chain USDC settlement costs. Measured figures include observations, sources and issuer comparisons where available.
cryptoetfsentinel.com
Data on US spot crypto ETFs: fee comparisons, issuer profiles, filings and market snapshots, with paid x402 endpoints for agents.
https://api.cryptoetfsentinel.com/v1/profiles/historyUnpaid GET /v1/profiles/history returned HTTP 402 on 2026-10-21 with x402 payment terms: x402 v2, exact, 0.05 USDC on Base or Solana. Listed in the Coinbase CDP x402 Bazaar discovery API (checked by payTo on 2026-10-21). Price range from the per-route amounts listed there, cross-checked with the live probe. Homepage fetched (HTTP 200). Last checked 2026-10-21.
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402rates.com
Evidence-backed tokenized treasury yields and measured cross-chain USDC settlement costs. Measured figures include observations, sources and issuer comparisons where available.
botsmith.dev
botsmith makes small, well-made software: market data that AI agents pay for per call (x402), a terminal client for Polymarket, a free place to try AI models, and a skill manager for coding agents.
x402financialdata.com
Pay-per-call stock, macro, on-chain, and crypto data over the x402 protocol. USDC on Base or Solana, no API keys, no subscriptions.