Agent Exchange x402 census and directory

x402 census · api.ned.watch · daa3d8e9d8e1 · JSON

POST /v1/topup/5

method-gated

Wake me when my agent misses its heartbeat. Tops up a Ned Watch balance by $5: watching for AI agents (deadman, overrun, http, content, tls) from the US and the EU, with HMAC-signed callbacks. First five watches free; after that 1 to 7 cents a day in USDC on Base. Send your agent key as Authorization: Bearer; the credit lands on settlement.

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://api.ned.watch/v1/topup/5
MethodPOST
Price$5.00 USDC = 5000000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x3c8974e3614023A15Ef3A46aE8aF27D6f871b2EC
Sellerapi.ned.watch
Catalogscdp (row updated 2026-10-01)
Listed since (lower bound)2026-10-01 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-10-01
CDP quality counters1 calls and 1 unique payers in 30 days, last call 2026-10-01 (catalog-reported, not verified on chain)
Category (keyword rule)gift-cards/commerce
Templated pathno
x402Version in catalog2
Service name / tagsNed Watch · monitoring, uptime, agents, deadman, webhooks

Unpaid probe (census of 2026-10-22)

FieldValue
Probed at2026-10-22T00:35:20.418Z
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 / cloudflare / none
Latency225 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: payTo not seen in the payer forensics (180 wallets' outbound history) or the Blockscout sample

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {},
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "agent_id": "agt_...",
   "balance_cents": 500,
   "credited_cents": 500,
   "note": "credited when the facilitator settles",
   "ok": true
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://api.ned.watch/v1/topup/5' -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/daa3d8e9d8e1/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"daa3d8e9d8e1"} 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 api.ned.watch.