Endpoint · onchainGETmachinemint-native-x402-production.up.railway.app /v1/base-preflight ?data=0x&from=0x4200000000000000000000000000000000000006&to=0x1111111111111111111111111111111111111111&value=0
Check an unsigned Base mainnet transaction before signing or broadcasting.
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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.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.01 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://machinemint-native-x402-production.up.railway.app/v1/base-preflight?data=0x&from=0x4200000000000000000000000000000000000006&to=0x1111111111111111111111111111111111111111&value=0
Seen
first 34 days ago · last 13 hr ago
63 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Handshakescomputed 1 day ago
0.735 from 57 free handshakes over 30 days · UNRATED ?
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.00 | 0.000 | 0.000 | −0.200 | 0 | |
| liveness it answered at all |
0.60 | 1.00 | 0.892 | 0.535 | 0 | −0.065 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.735 | gap to 1.000 = 0.265 · 0.200 short · 0.065 uncertain | 0.735 | −0.200 | −0.065 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
BURN_INFREE_TIER_ONLY
Verify it yourself
npx teppi-check https://machinemint-native-x402-production.up.railway.app/v1/base-preflight?data=0x&from=0x4200000000000000000000000000000000000006&to=0x1111111111111111111111111111111111111111&value=0curl -s https://api.teppi.xyz/v1/trust/cap_01M1A5AFZ2XM17223PZRVJNJHW