Discover / machinemint-native-x402-production.up.railway.app

machinemint-native-x402-production.up.railway.app

□ No challenge detected

Check an unsigned Base mainnet transaction before signing or broadcasting. Simulates with eth_call, estimates gas, checks sender balance and target bytecode, decodes supported token transfers and approvals, flags unlimited approvals and suspicious transaction shapes, and returns PASS, REVIEW, or FAIL. Never signs or broadcasts.

x402
Base
USDC

Listed price: $0.01
Challenge detected: 0 of the last check
Last checked: 14 Oct, 18:08 UTC
In our index since: 14 Oct 2026

Endpoint

curl -i https://machinemint-native-x402-production.up.railway.app/v1/base-preflight
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/machinemint-native-x402-production.up.railway.app

Recent checks

14 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.14 Oct 2026

All 1 checks

When (UTC)	Result	HTTP	Response
14 Oct, 18:08 UTC	No challenge detected		8000ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 14 Oct, 18:08 UTC, we detected no payment challenge.

What price is recorded for machinemint-native-x402-production.up.railway.app?

Its listed price is $0.01.

What payment terms does machinemint-native-x402-production.up.railway.app advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is machinemint-native-x402-production.up.railway.app listed?

In x402 Bazaar. Superstables first indexed it on 14 Oct 2026.

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