Endpoint · onchainPOSTx402-echo-service.onrender.com /chain/code
Determine whether an address on Base is a contract or an externally owned account.
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Determine whether an address on Base is a contract or an externally owned account. POST {"address":"0x..."} and receive isContract, the bytecode size in bytes and its keccak-256 hash. Useful before sending funds to an unfamiliar address.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.001 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://x402-echo-service.onrender.com/chain/code
Seen
first 34 days ago · last 5 days ago
64 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Handshakescomputed 1 day ago
0.734 from 56 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 | 0.890 | 0.534 | 0 | −0.066 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.734 | gap to 1.000 = 0.266 · 0.200 short · 0.066 uncertain | 0.734 | −0.200 | −0.066 |
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://x402-echo-service.onrender.com/chain/codecurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59MV9211CWD0YTH3M5AKY