Agent Exchange x402 census and directory

x402 census · livecheck.fly.dev · b963f56e7749 · JSON

POST /v1/check

unprobed

Livecheck Sentinel check - one-shot URL condition check. POST /v1/check with {target, condition, baseline_hash?}. Detectors: status_change, keyword, text_diff, numeric_threshold. Returns current observation + fired when comparable. Fixed $0.02 USDC. No watcher created. Not /v1/verify ($0.01) and not Confirm.

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://livecheck.fly.dev/v1/check
MethodPOST
Price$0.02 USDC = 20000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x33693228b706cb30f4b4dbf35f79129a763f91c5
Sellerlivecheck.fly.dev
Catalogscdp (row updated 2026-09-10)
Listed since (lower bound)2026-09-10 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-10
CDP quality counters1 calls and 1 unique payers in 30 days, last call 2026-09-10 (catalog-reported, not verified on chain)
Category (keyword rule)other/unknown
Templated pathno
x402Version in catalog2
Service name / tagsnone

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 payers1
Payments1
USDC volume$0.01
Median payment$0.01
First / last payment2026-09-14 / 2026-09-14
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x33693228b706cb30f4b4dbf35f79129a763f91c5

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "baseline_hash": null,
   "condition": {
    "detector": "status_change",
    "params": {}
   },
   "target": {
    "render": "never",
    "selector": null,
    "type": "url",
    "url": "https://boards.greenhouse.io/example/jobs/1842"
   }
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 860
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://livecheck.fly.dev/v1/check' -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/b963f56e7749/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"b963f56e7749"} 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 livecheck.fly.dev.