Agent Exchange x402 census and directory

x402 census · agent402.tools · bda09754ce38 · JSON

POST /api/loop-gate

live

Should the loop run another iteration? Send the goal, the iteration that just finished (lastOutput, iteration), and optionally maxIterations, a budget { spentUsd, maxUsd }, the history of earlier iterations (up to 20 of { iteration, summary }, oldest first) and constraints; get back decision (continue, stop or escalate), reason, confidence (0 to 1), the checks that produced it (goalMet, budgetExc…

Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.

Facts from the catalogs

FieldValue
URLhttps://agent402.tools/api/loop-gate
MethodPOST
Price$0.001 USDC = 1000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base); also accepts eip155:137, eip155:42161, eip155:143, eip155:43114, eip155:1329, eip155:10, eip155:4663, eip155:42220, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, stellar:pubnet, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=
payTo0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0
Selleragent402.tools
Catalogscdp (row updated 2026-10-21), payai (row updated 2026-10-20)
Listed since (lower bound)2026-10-20 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-10-21
CDP quality counters2 calls and 2 unique payers in 30 days, last call 2026-10-21 (catalog-reported, not verified on chain)
Category (keyword rule)research/reports
Templated pathno
x402Version in catalog2
Service name / tagsLoop gate · ai, agent, loop, judgment, budget

Unpaid probe (census of 2026-10-22)

FieldValue
Probed at2026-10-22T00:26:29.310Z
HEAD402
GET402
Verdictlive live: valid 402 to an unpaid GET
402 carried inbody
x402Version in the 4022
accepts[0]{"scheme":"exact","network":"eip155:8453","amount":"1000","payTo":"0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}
Live amount equals catalog priceyes
Live payTo equals catalog payToyes
extensions.bazaar in the 402yes
PAYMENT-REQUIRED headerno
WWW-Authenticate offerPayment id="2bQe0N4DV__lk1ZXVwKvHfZnPgQg
Content type / server / CORSapplication/json / railway-hikari / *
Latency101 ms
ErrorPayment required

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

FieldValue
Distinct payers120
Payments1,253
USDC volume$12.29
Median payment$0.003
First / last payment2026-06-18 / 2026-09-30
Sampler-shaped share of payments61.8%
Payers that are not samplers2
Sourceforensics-2026-09-30
Address0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0 (contract: EIP7702StatelessDeleGator)

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "budget": {
    "maxUsd": 0.5,
    "spentUsd": 0.52
   },
   "goal": "Find three peer-reviewed studies on sleep and memory consolidation published since 2020, with DOIs.",
   "history": [
    {
     "iteration": 2,
     "summary": "One study found (Nature Neuroscience 2021)."
    },
    {
     "iteration": 3,
     "summary": "Second study found (Sleep 2023); PubMed search for a third in progress."
    }
   ],
   "iteration": 4,
   "lastOutput": "Found two studies with DOIs (Nature Neuroscience 2021, Sleep 2023). A third search of PubMed returned review articles only.",
   "maxIterations": 6
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://agent402.tools/api/loop-gate' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'

The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/bda09754ce38/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"bda09754ce38"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: PayAI listing status · agentic.market (CDP Bazaar front end) · this record as JSON · all resources on agent402.tools.