x402 census · api.delx.ai · c5fdd75a8464 · JSON
POST /api/v1/x402/base-gas-budget-check
live
Check a caller-supplied Base gas price and gas limit against an ETH transaction budget with exact Wei arithmetic. Use with a gas quote supplied by the caller to fail closed before signing. Returns estimated fee, budget headroom, and an optional USD estimate for 0.001 USDC via x402 on Base or Solana; no live RPC or custody.
Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://api.delx.ai/api/v1/x402/base-gas-budget-check |
| Method | POST |
| Price | $0.001 USDC = 1000 atomic units of EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v |
| Network | solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp (solana) |
| payTo | 28heAMpFkeUJsL7o7apiK4oJwZWq2fUHinRwbgYYsemG |
| Seller | api.delx.ai |
| Catalogs | payai (row updated 2026-09-07) |
| Listed since (lower bound) | 2026-09-07 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-07 |
| CDP quality counters | not in the CDP catalog |
| Category (keyword rule) | crypto-data |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | none |
Unpaid probe (census of 2026-09-30)
| Field | Value |
|---|---|
| Probed at | 2026-09-30T23:31:46.598Z |
| HEAD | 404 |
| GET | 402 |
| Verdict | live live: valid 402 to an unpaid GET |
| 402 carried in | header+body |
| x402Version in the 402 | 2 |
| accepts[0] | {"scheme":"exact","network":"eip155:8453","amount":"1000","payTo":"0x9f8bd9875b3E0b632a24A3A7C73f7787175e73A2","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}} |
| Live amount equals catalog price | yes |
| Live payTo equals catalog payTo | no |
| extensions.bazaar in the 402 | yes |
| PAYMENT-REQUIRED header | yes |
| WWW-Authenticate offer | Payment id="-3YvFM3G3E52MnJOWoFHspKzpDBg |
| Content type / server / CORS | application/json / n/a / * |
| Latency | 2,476 ms |
| Error | Payment required: $0.001 USDC for util_base_gas_budget_check |
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 |
|---|---|
| Settlement history | unresolved: non-EVM payTo; only Base is covered |
Try it (unpaid: shows the 402)
curl -si -X POST 'https://api.delx.ai/api/v1/x402/base-gas-budget-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/c5fdd75a8464/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"c5fdd75a8464"} 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.