Endpoint · otherGETdata.spencermcw.com /v1/tax/changes ?entity=rate&limit=1&state=WA
Quarterly sales-tax rate and boundary changes in the Streamlined Sales Tax states
Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.05 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://data.spencermcw.com/v1/tax/changes?entity=rate&limit=1&state=WA
MCP server on this host: com.spencermcw.data/distill
Seen
first 1 day ago · last 14 hr ago
2 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.198 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 0.802: 0.750 uncertain ? + 0.052 short ? · 0.252 to D
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.75 | 1.00 | 0.000 | 0.000 | 0 | −0.750 | |
| latency p95 it answered as fast as its class |
0.25 | 0.79 | 0.794 | 0.198 | −0.052 | 0 | |
| Composite | 1.00 | 0.198 | gap to 1.000 = 0.802 · 0.052 short · 0.750 uncertain | 0.198 | −0.052 | −0.750 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check; price stability · nothing to score
The multiplication, written out
0.750 × 0.000 liveness
+ 0.250 × 0.794 latency p95
= 0.198 → UNRATED: 1 of 30 paid calls weights 2026.09.6 · 1 samples · seed cap_01M5H26GRG2X8FCKWVK63E7WH7|2026-09-22T06:38:51.896Z|2026.09.6
Verify it yourself
npx teppi-check https://data.spencermcw.com/v1/tax/changes?entity=rate&limit=1&state=WAcurl -s https://api.teppi.xyz/v1/trust/cap_01M5H26GRG2X8FCKWVK63E7WH7