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×)

11 merchants · 228 endpoints

127.0.0.1:4021

Chain data133 endpoints2 hosts1 loopback host

Algorand Foundation–related holder wallets snapshot for ALGO (full list in one response; not paged)

69%live230paid calls2payers
$0.01 – $0.50
USDC
Overcharges2 above list · 19h ago40 of 133 failing

api.scrape402.site

Chain data2 endpoints2 hosts1 loopback host

Extract clean, markdown-formatted text from any given URL, bypassing common web blocks

50%live176paid calls172payers
$0.10
USDC
Degraded1 of 2 failing · 20h ago

algo.netintel.dev

Chain data73 endpoints

DNS lookup / nslookup / dig API — resolve the common DNS record types (A, AAAA, MX, TXT, NS, CNAME, SOA, PTR) for a domain. Parses SPF/DMARC from TXT plus DKIM at the default._domainkey selector, and cross-checks A records across Google/Cloudflare/Quad9 resolvers for propagation consistency

97%live76paid calls1payer
$0.002 – $0.25
USDC
Degraded2 of 73 failing · 19h ago

dashboard.frynetworks.com

Chain data2 endpoints2 hosts

Live Fry Networks DePIN device-staking pool telemetry (aggregated)

50%live67paid calls20payers
$0.005 – $0.01
USDC
Degraded1 of 2 failing · 20h ago

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 · 19h ago

civitas-api.civitasv.workers.dev

Chain data2 endpoints2 hosts1 loopback host

Send an end-to-end encrypted message on Algorand: returns the unsigned 0-ALGO payment transaction whose note carries the sealed ciphertext, for the sender to sign and submit

50%live19paid calls2payers
$0.01 – $0.10
USDC
Degraded1 of 2 failing · 19h ago

Consensa clearance: consented, attributed use of OSS knowledge

0%live15paid calls2payers
$0.01
USDC
Broken1 of 1 failing · 19h 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 · 19h 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