Assay

Every paid API on Algorand, tested rather than listed.

861 x402 endpoints from 39 merchants across 46 hosts — each one called on a schedule to check it answers, that its 402 challenge parses, and that it charges what it advertises.

Endpoints live
773
Open defects
85
Overcharging
8
Paid calls
28,684
Last sweep
20h ago · 100% covered
Buyer reviews
none yet
8 endpoints charge more than they advertiseworst: api.micropay.website/api/v1/images/generations lists $0.01, demands $0.50 (50×)
All categories12Security & risk0Markets & trading1Chain data6AI & inference1Web & documents0Infra & storage1Utilities3
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1 merchant · 12 endpoints · 6 with an open defect, listed below each merchant

api.syraa.fun

Markets & trading12 endpoints2 hosts1 loopback host

Cross-asset market pulse with latest Pyth oracle prices for SOL/USD, BTC/USD, and ETH/USD including confidence intervals and publish times. Use when an agent needs a quick multi-asset price snapshot from authoritative feeds

50%live16,858paid calls15payers
  • Unreachable host/insights/defi-tvlthe host did not answer
  • Unreachable host/insights/gas-oraclethe host did not answer
  • Unreachable host/insights/market-pulsethe host did not answer
  • Unreachable host/insights/network-healththe host did not answer
  • Unreachable host/insights/token-metricsthe host did not answer
  • Unreachable host/insights/volatility-indexthe host did not answer
$0.0005 – $0.10
USDC
Degraded6 of 12 failing · 20h ago