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×)

5 merchants · 15 endpoints

x402-mesh-gateway.fly.dev

Chain data2 endpoints

Pay-per-prompt OpenAI-compatible chat completions routed across a mesh of independent GPU nodes, settled in USDC on Algorand via x402

100%live27paid calls1payer
$0.002
USDC
Verified2/2 answered · 20h ago

api.depth402.workers.dev

Chain data7 endpoints

quanto costa DAVVERO andata e ritorno, misurato sul router vivo a tre taglie: non la fee dichiarata, l'effetto misurato

100%live12paid calls1payer
$0.01 – $0.05
USDC
Verified7/7 answered · 20h ago

arbiter-hs23.onrender.com

Chain data3 endpoints

Pre-flight safety verdict for an unsigned blockchain transaction: decodes what the transaction actually does, scores the counterparty and any asset involved, detects drain patterns such as unlimited approvals, rekeys and close-remainder-to, and returns allow/warn/block with itemised reasons before the agent signs

100%live12paid calls2payers
$0.002 – $0.25
USDC
Verified3/3 answered · 20h ago

Plain-English explanation of an Algorand transaction, with normalised structured fields

100%live5paid calls2payers
$0.005
USDC
Verified1/1 answered · 20h ago

Algorand MainNet account intelligence: ALGO balance, USDC opt-in & balance, asset/app counts, rekey status, and top ASA holdings for any address. Useful for agents verifying a counterparty before transacting

100%live3paid calls2payers
$0.005 – $0.01
USDC
Verified2/2 answered · 20h ago