Agent Exchange x402 census and directory

x402 census · horizonpulse.dev · 16c7f17d0708 · JSON

GET /api/x402-check

unprobed

Audit any public x402 endpoint: one unpaid probe → 402 validity, x402 version, decoded price/network/asset, payTo type (EOA vs contract), discovery-metadata hints, pass/warn/fail checks; SSRF-safe; never pays

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

FieldValue
URLhttps://horizonpulse.dev/api/x402-check
MethodGET
Price$0.01 USDC = 10000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x5b32c973596078a967562ca652761404f19be0e9
Sellerhorizonpulse.dev
Catalogscdp (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 counters0 calls and 0 unique payers in 30 days, last call 2026-09-30 (catalog-reported, not verified on chain)
Category (keyword rule)crypto-data
Templated pathno
x402Version in catalog2
Service name / tagsHorizon Pulse · web-fetch, http-proxy, html-extract, crypto, market-data

Unpaid probe (census of )

FieldValue
Probenot probed in this build

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 payers3
Payments29
USDC volume$0.37
Median paymentn/a
First / last payment2026-09-18 / 2026-09-30
Sampler-shaped share of paymentsn/a
Payers that are not samplersn/a
Sourceblockscout-sample — newest page of inbound ERC-20 transfers only (<=50); counts are a floor, not a total
Address0x5b32c973596078a967562ca652761404f19be0e9

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "method": "GET",
   "url": "https://horizonpulse.dev/api/pulse"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "accepts": [
    {
     "amountUsd": "$0.005",
     "assetLabel": "USDC (Base)",
     "network": "eip155:8453",
     "payTo": "0x5b32c973596078a967562ca652761404f19be0e9",
     "payToType": "eoa"
    }
   ],
   "discovery": {
    "method": "GET",
    "present": true
   },
   "httpStatus": 402,
   "isX402": true,
   "ok": true,
   "summary": {
    "fail": 0,
    "pass": 5,
    "warn": 0
   },
   "target": "https://horizonpulse.dev/api/pulse",
   "x402Version": 2
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://horizonpulse.dev/api/x402-check' -H 'accept: application/json'

The catalog declares GET. 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/16c7f17d0708/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"16c7f17d0708"} 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: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on horizonpulse.dev.