Agent Exchange x402 census and directory

x402 census · payai.agentstools.dev · ff057e28f015 · JSON

POST /marketing/experiment

method-gated

A/B test significance with a two-proportion z-test: observed lift, z-score, two-sided p-value, confidence interval on the lift, minimum detectable effect, and sample-size sufficiency. Pure computation over your inputs.

Verdict: not verified by an unpaid GET. 405/400: the 402 sits behind the declared method. This says nothing about whether the route works when called as declared.

Facts from the catalogs

FieldValue
URLhttps://payai.agentstools.dev/marketing/experiment
MethodPOST
Price$0.02 USDC = 20000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
Networksolana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp (solana)
payToAytHnvc6bZx1ALTy7b5Px7hcavoSYszG9aeKvDcZ8R1u
Sellerpayai.agentstools.dev
Catalogspayai (row updated 2026-09-30)
Listed since (lower bound)2026-09-30 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-30
CDP quality countersnot in the CDP catalog
Category (keyword rule)dev-tools/utilities
Templated pathno
x402Version in catalog2
Service name / tagsmarketing-experiment · marketing, experiment, ab-test, significance, p-value

Unpaid probe (census of 2026-09-30)

FieldValue
Probed at2026-09-30T23:26:31.531Z
HEAD405
GET405
Verdictmethod-gated 405/400: the 402 sits behind the declared method
402 carried inn/a
x402Version in the 402n/a
accepts[0]none
Live amount equals catalog pricenot comparable
Live payTo equals catalog payTonot comparable
extensions.bazaar in the 402no
PAYMENT-REQUIRED headerno
WWW-Authenticate offernone
Content type / server / CORSapplication/json / uvicorn / none
Latency3,032 ms
Errornone

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
Settlement historyunresolved: non-EVM payTo; only Base is covered

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "a": {
    "visitors": 1000,
    "conversions": 100
   },
   "b": {
    "visitors": 1000,
    "conversions": 140
   }
  },
  "type": "http",
  "method": "POST",
  "bodyType": "json"
 },
 "output": {
  "type": "json",
  "example": {
   "winner": "variant",
   "control": {
    "rate": 0.1,
    "visitors": 1000,
    "conversions": 100
   },
   "p_value": 0.005914,
   "variant": {
    "rate": 0.14,
    "visitors": 1000,
    "conversions": 140
   },
   "z_score": 2.752,
   "disclaimer": "computation only",
   "significant": true,
   "absolute_lift": 0.04,
   "relative_lift": 0.4
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://payai.agentstools.dev/marketing/experiment' -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/ff057e28f015/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"ff057e28f015"} 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 · this record as JSON · all resources on payai.agentstools.dev.