Endpoint · onchainPOSTx402-echo-service.onrender.com /chain/erc20-balance
Read an ERC-20 token balance on Base.
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Read an ERC-20 token balance on Base. POST {"address":"0x...","token":"0x..."} and receive the raw balance, the token decimals and the human-readable amount. Defaults to USDC when token is omitted. Live chain state, no indexer lag.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/erc20-balance
Seen
first 34 days ago · last 5 days ago
64 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.876 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 0.124: 0.071 uncertain ? + 0.053 short ? · 0.024 to A
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.60 | 1.00 | 0.890 | 0.534 | 0 | −0.066 | |
| latency p95 it answered as fast as its class |
0.20 | 0.74 | 0.708 | 0.142 | −0.053 | −0.006 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.876 | gap to 1.000 = 0.124 · 0.053 short · 0.071 uncertain | 0.876 | −0.053 | −0.071 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.600 × 0.890 liveness
+ 0.200 × 0.708 latency p95
+ 0.200 × 1.000 price stability
= 0.876 → UNRATED: 56 of 30 paid calls weights 2026.09.6 · 56 samples · seed cap_01M1A59MYBYXRW5ZRH8WJE7TXQ|2026-09-03T16:29:31.861Z|2026.09.6
Verify it yourself
npx teppi-check https://x402-echo-service.onrender.com/chain/erc20-balancecurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59MYBYXRW5ZRH8WJE7TXQ