Endpoint · onchainPOSTpreflight402.com /v1/evm/tx-inspect
Call before signing an Ethereum or Base transaction or calldata.
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Call before signing an Ethereum or Base transaction or calldata. Decodes raw transaction bytes or contract calldata against standard interfaces (ERC-20, ERC-721, ERC-1155, WETH, EIP-2612 Permit and Permit2) in memory. Returns the decoded method signature, typed parameters, value in wei and standard specification links. Mechanical byte decoding only: never simulates state or advises whether to sign.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.10 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://preflight402.com/v1/evm/tx-inspect
Seen
first 5 days ago · last 10 hr ago
8 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.340 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held back by sample size, not by the seller · gap to 1.000 is 0.660: 0.460 uncertain ? + 0.200 short ? · 0.110 to D
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.60 | 1.00 | 0.233 | 0.140 | 0 | −0.460 | |
| latency p95 it answered as fast as its class |
0.20 | 0.00 | 0.000 | 0.000 | −0.200 | 0 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.340 | gap to 1.000 = 0.660 · 0.200 short · 0.460 uncertain | 0.340 | −0.200 | −0.460 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.600 × 0.233 liveness
+ 0.200 × 0.000 latency p95
+ 0.200 × 1.000 price stability
= 0.340 → UNRATED: 8 of 30 paid calls weights 2026.09.6 · 8 samples · seed cap_01M3NV26WTSDFBBPDDH60GAZW3|2026-09-04T03:30:15.591Z|2026.09.6
Verify it yourself
npx teppi-check https://preflight402.com/v1/evm/tx-inspectcurl -s https://api.teppi.xyz/v1/trust/cap_01M3NV26WTSDFBBPDDH60GAZW3