x402 census · api.delx.ai · 8a5990cdccd8 · JSON
POST /api/v1/x402/base-nonce
gone
Transaction count/nonce for one Base address for $0.001 USDC via eth_getTransactionCount. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.
Verdict: dead listing. 404/410: gone.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://api.delx.ai/api/v1/x402/base-nonce |
| Method | POST |
| Price | $0.001 USDC = 1000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0x9f8bd9875b3E0b632a24A3A7C73f7787175e73A2 |
| Seller | api.delx.ai |
| Catalogs | payai (row updated 2026-08-27) |
| Listed since (lower bound) | 2026-08-27 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-08-27 |
| CDP quality counters | not in the CDP catalog |
| Category (keyword rule) | chain-rpc |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | none |
Unpaid probe (census of 2026-09-30)
| Field | Value |
|---|---|
| Probed at | 2026-09-30T23:34:25.342Z |
| HEAD | 404 |
| GET | 404 |
| Verdict | gone 404/410: gone |
| 402 carried in | n/a |
| x402Version in the 402 | n/a |
| accepts[0] | none |
| Live amount equals catalog price | not comparable |
| Live payTo equals catalog payTo | not comparable |
| extensions.bazaar in the 402 | no |
| PAYMENT-REQUIRED header | no |
| WWW-Authenticate offer | none |
| Content type / server / CORS | application/json / n/a / none |
| Latency | 2,950 ms |
| Error | none |
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)
| Field | Value |
|---|---|
| Distinct payers | 18 |
| Payments | 39 |
| USDC volume | $0.14 |
| Median payment | $0.001 |
| First / last payment | 2026-08-06 / 2026-09-30 |
| Sampler-shaped share of payments | 94.9% |
| Payers that are not samplers | 1 |
| Source | forensics-2026-09-30 |
| Address | 0x9f8bd9875b3E0b632a24A3A7C73f7787175e73A2 (contract: EIP7702StatelessDeleGator) |
Try it (unpaid: shows the 402)
curl -si -X POST 'https://api.delx.ai/api/v1/x402/base-nonce' -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/8a5990cdccd8/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"8a5990cdccd8"} 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 api.delx.ai.