Endpoint · onchainGETapi.eucompliance.tools /x402/preflight ?chain=base&data=0x&sender=0x0000000000000000000000000000000000000001&to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&value_eth=0
Will this transaction go through?
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Will this transaction go through? Six checks before any gas is spent: gas vs balance, full simulation with the revert reason decoded, stuck nonces, contract or wallet recipient, ERC-20 allowance, and a sanctions screen of the counterparty. Returns send / do not send with every reason.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.005 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://api.eucompliance.tools/x402/preflight?chain=base&data=0x&sender=0x0000000000000000000000000000000000000001&to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&value_eth=0
Seen
first 35 days ago · last 27 days ago
28 free handshakes
Payment
Pays through
x402
Offered on?
Polygon, Arbitrum, Base USDC, Solana
Listed on?
Polygon, Arbitrum, Base, Solana
Score, from free handshakes onlyweights 2026.09.1
UN
RATED
RATED
0.663 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.337: 0.137 uncertain ? + 0.200 short ? · 0.137 to B
| 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 | 0.772 | 0.463 | 0 | −0.137 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.663 | gap to 1.000 = 0.337 · 0.200 short · 0.137 uncertain | 0.663 | −0.200 | −0.137 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.000 latency p95
+ 0.600 × 0.772 liveness
+ 0.200 × 1.000 price stability
= 0.663 → UNRATED: 27 of 30 paid calls weights 2026.09.1 · 27 samples · seed cap_01M1A5AA0K5Y6E2C1Q3H4DEDZW|2026-08-14T17:46:29.774Z|2026.09.1
Verify it yourself
npx teppi-check https://api.eucompliance.tools/x402/preflight?chain=base&data=0x&sender=0x0000000000000000000000000000000000000001&to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&value_eth=0curl -s https://api.teppi.xyz/v1/trust/cap_01M1A5AA0K5Y6E2C1Q3H4DEDZW