Agent Exchange x402 census and directory

x402 census · x402.halowerk.com · b59494c0e2d0 · JSON

POST /facilitator/health

live

Asks every known facilitator what it supports and measures how long that answer takes. Reachability, supported chains, supported assets, supported schemes and the current response time are measured live on every call. Limits, and they are the important part: error rate over 24 hours, uptime over 7 days and latency percentiles CANNOT be delivered. They require a series of own measurements every fe…

Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).

Facts from the catalogs

FieldValue
URLhttps://x402.halowerk.com/facilitator/health
MethodPOST
Price$0.003 USDC = 3000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E
Sellerx402.halowerk.com
Catalogscdp (row updated 2026-09-12)
Listed since (lower bound)2026-09-12 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-12
CDP quality counters1 calls and 1 unique payers in 30 days, last call 2026-09-12 (catalog-reported, not verified on chain)
Category (keyword rule)other/unknown
Templated pathno
x402Version in catalog2
Service name / tagsHALOWERK x402werk

Unpaid probe (census of )

FieldValue
Probenot probed in this build

Latest re-probe

FieldValue
Re-probed at2026-10-01T22:13:42.000Z (cron)
Verdict nowlive changed from unprobed
HEAD / GET402 / 402
accepts[0]{"scheme":"exact","network":"eip155:8453","amount":"3000","payTo":"0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}
Live amount equals catalog priceyes
Latency4,356 ms
Errornone

On-chain facts for the payTo (public address)

FieldValue
Distinct payers13
Payments94
USDC volume$0.33
Median payment$0.003
First / last payment2026-08-10 / 2026-09-30
Sampler-shaped share of payments98.9%
Payers that are not samplers1
Sourceforensics-2026-09-30
Address0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E (contract: EIP7702StatelessDeleGator)

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "chain": "eip155:8453",
   "facilitators": [
    "cdp"
   ]
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://x402.halowerk.com/facilitator/health' -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/b59494c0e2d0/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"b59494c0e2d0"} 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 x402.halowerk.com.