Kronos Gas Preflight
POST https://api.nexismvp.com/market/gas-preflight
Listed in Coinbase x402 Bazaar
Simulate a Base mainnet transaction before submitting it — real eth_estimateGas + eth_call against the given {to, data, value}, returns whether it would succeed, estimated gas, and estimated cost. POST body required. Experimental/informational only — not financial advice.
Other endpoints from api.nexismvp.com
The same service's other paid functions that Hagglyai tracks, each with its own price. Functions outside Hagglyai's categories are not listed.
| Endpoint | Category | Price per call |
|---|---|---|
| GET /forecast/btc | Crypto prices & market data | $0.001 |
| GET /market/gas-preflight | On-chain data | $0.001 |
| GET /market/pdf-to-markdown | Web page extraction | $0.001 |
| POST /market/pdf-to-markdown | Web page extraction | $0.001 |
How to buy
This endpoint takes pay-per-call payments over x402. Call it once without paying to see its live price; any x402 client then pays and retries automatically.
curl -i -X POST "https://api.nexismvp.com/market/gas-preflight"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseEstimated calls per day
Paid calls to api.nexismvp.com's tracked endpoints each day, estimated from the 30-day totals the x402 catalogues report. Each bar is the change in that 30-day total since the day before, plus the calls that left the 30-day window (taken as an average day). It is an estimate: Hagglyai does not measure or pay for these calls.
Usage available for 3 of 5 tracked endpoints, 7 paid calls in the last 30 days. Last updated 2 hours ago. Unknown usage is left out, not counted as zero.
Compared with other providers
api.nexismvp.com ranks 134th of 185 in On-chain data by its latest reported 30-day paid calls. Coverage matters: a provider whose endpoints report more of their usage can rank higher.
| # | Provider | Reported 30-day calls | Coverage |
|---|---|---|---|
| 1 | agent.pocket.network | 7,519 | 14 of 25 endpoints |
| 2 | www.api-xpay.com | 7,161 | 1 of 1 endpoint |
| 3 | api.onesource.io | 5,682 | 27 of 29 endpoints |
| 4 | market.datapackvibe.com | 5,612 | 3589 of 6722 endpoints |
| 5 | agent402.tools | 3,805 | 148 of 234 endpoints |
| 6 | api.solenrich.com | 1,680 | 7 of 12 endpoints |
| 7 | api.losbeto.xyz | 1,571 | 22 of 109 endpoints |
| 8 | api.x402node.dev | 1,284 | 163 of 189 endpoints |
| 134 | api.nexismvp.com (this one) | 7 | 3 of 5 endpoints |