Endpoint · computePOSTmarket.datapackvibe.com /x402/demand-market-polkadot-spread-check
Polkadot Bid-ask spread check: Calculate the latest absolute and percentage bid-ask spread.
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Polkadot Bid-ask spread check: Calculate the latest absolute and percentage bid-ask spread. Coinbase Exchange public USD market data; not investment advice.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.01 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://market.datapackvibe.com/x402/demand-market-polkadot-spread-check
Seen
first 2 days ago · last 13 hr ago
4 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.310 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 0.690: 0.600 uncertain ? + 0.090 short ? · 0.140 to D
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.60 | 1.00 | 0.000 | 0.000 | 0 | −0.600 | |
| latency p95 it answered as fast as its class |
0.20 | 0.55 | 0.549 | 0.110 | −0.090 | 0 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.310 | gap to 1.000 = 0.690 · 0.090 short · 0.600 uncertain | 0.310 | −0.090 | −0.600 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.600 × 0.000 liveness
+ 0.200 × 0.549 latency p95
+ 0.200 × 1.000 price stability
= 0.310 → UNRATED: 4 of 30 paid calls weights 2026.09.6 · 4 samples · seed cap_01M3XJBX0TF4B1CJ1AQD5NA317|2026-09-04T12:57:21.470Z|2026.09.6
Verify it yourself
npx teppi-check https://market.datapackvibe.com/x402/demand-market-polkadot-spread-checkcurl -s https://api.teppi.xyz/v1/trust/cap_01M3XJBX0TF4B1CJ1AQD5NA317