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
19h 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 categories17Security & risk1Markets & trading4Chain data7AI & inference1Web & documents0Infra & storage1Utilities3
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1 merchant · 7 endpoints · 7 with an open defect, listed below each merchant

api.micropay.website

AI & inference7 endpoints4 hosts

OpenAI-compatible chat completion from qwen3.6-plus, returning assistant messages with optional SSE token streaming

0%live39paid calls3payers
  • Price mismatch/api/v1/chat/completionslisted $0.01 · charges $0.10 (10×)
  • Price mismatch/api/v1/images/generationslisted $0.01 · charges $0.50 (50×)
  • Rejected the call/api/v1/chat/completionsrefused the request outright
  • Rejected the call/api/v1/ide/agentrefused the request outright
  • Rejected the call/api/v1/chat/completionsrefused the request outright
  • Rejected the call/api/v1/ide/agentrefused the request outright
  • Rejected the call/api/v1/images/generationsrefused the request outright
$0.01 – $0.10
USDC
Broken7 of 7 failing · 19h ago2 above list