Endpoint · market dataPOSTx402-gateway-production-1f21.up.railway.app /change
Detect whether a webpage changed.
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Detect whether a webpage changed. Website change detection and recurring webpage monitoring for price changes, inventory changes, availability changes, documentation updates, policy updates and competitor monitoring. Compare current content with previous_hash or previous_text and return current_hash plus deterministic change status and diffs.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-gateway-production-1f21.up.railway.app/change
Seen
first 3 days ago · last 12 hr ago
5 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.400 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 0.600: 0.600 uncertain ? + 0.000 short ? · 0.050 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 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.400 | gap to 1.000 = 0.600 · 0.000 short · 0.600 uncertain | 0.400 | −0.000 | −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 × 1.000 latency p95
+ 0.200 × 1.000 price stability
= 0.400 → UNRATED: 5 of 30 paid calls weights 2026.09.6 · 5 samples · seed cap_01M3TZZJASQF9QABK26HF7GNMN|2026-09-04T08:13:23.127Z|2026.09.6
Verify it yourself
npx teppi-check https://x402-gateway-production-1f21.up.railway.app/changecurl -s https://api.teppi.xyz/v1/trust/cap_01M3TZZJASQF9QABK26HF7GNMN