Endpoint · onchainGETai-data-marketplace-1042299154756.us-central1.run.app /api/v1/erc20_allowance ?chain=base&owner=0x0000000000000000000000000000000000000001&spender=0x0000000000000000000000000000000000000002&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Read the current ERC-20 allowance for an owner, spender, and token from a supported EVM network without signing or broadcasting.
Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.003 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/erc20_allowance?chain=base&owner=0x0000000000000000000000000000000000000001&spender=0x0000000000000000000000000000000000000002&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Seen
first 34 days ago · last 21 days ago
40 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.3
UN
RATED
RATED
0.822 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 0.178: 0.098 uncertain ? + 0.080 short ? · 0.078 to A
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.60 | 1.00 | 0.846 | 0.508 | 0 | −0.092 | |
| latency p95 it answered as fast as its class |
0.20 | 0.60 | 0.571 | 0.114 | −0.080 | −0.006 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.822 | gap to 1.000 = 0.178 · 0.080 short · 0.098 uncertain | 0.822 | −0.080 | −0.098 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.600 × 0.846 liveness
+ 0.200 × 0.571 latency p95
+ 0.200 × 1.000 price stability
= 0.822 → UNRATED: 40 of 30 paid calls weights 2026.09.3 · 40 samples · seed cap_01M1A59XA52RH23N7H6D3BN30B|2026-08-21T06:48:09.268Z|2026.09.3
Verify it yourself
npx teppi-check https://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/erc20_allowance?chain=base&owner=0x0000000000000000000000000000000000000001&spender=0x0000000000000000000000000000000000000002&token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913curl -s https://api.teppi.xyz/v1/trust/cap_01M1A59XA52RH23N7H6D3BN30B