Endpoint · evidenceGEToffercheck.offercheck.workers.dev /v1/check/url ?url=https%3A%2F%2Fexample.com%2Fdocs%2Fpage
Check a URL before you cite, visit or trust it: liveness, final URL and redirect chain, soft-404 detection, page title, domain registration age (RDAP), robots.txt policy for AI…
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Check a URL before you cite, visit or trust it: liveness, final URL and redirect chain, soft-404 detection, page title, domain registration age (RDAP), robots.txt policy for AI agents, and Wayback Machine snapshot availability. $0.002 per check.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.002 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://offercheck.offercheck.workers.dev/v1/check/url?url=https%3A%2F%2Fexample.com%2Fdocs%2Fpage
Seen
first 7 days ago · last 10 hr ago
12 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.542 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 0.458: 0.335 uncertain ? + 0.123 short ? · 0.108 to C
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.60 | 1.00 | 0.442 | 0.265 | 0 | −0.335 | |
| latency p95 it answered as fast as its class |
0.20 | 0.39 | 0.386 | 0.077 | −0.123 | 0 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.542 | gap to 1.000 = 0.458 · 0.123 short · 0.335 uncertain | 0.542 | −0.123 | −0.335 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.600 × 0.442 liveness
+ 0.200 × 0.386 latency p95
+ 0.200 × 1.000 price stability
= 0.542 → UNRATED: 11 of 30 paid calls weights 2026.09.6 · 11 samples · seed cap_01M3GP83VEVYTF3KS2BJVAJRKS|2026-09-03T19:06:19.953Z|2026.09.6
Verify it yourself
npx teppi-check https://offercheck.offercheck.workers.dev/v1/check/url?url=https%3A%2F%2Fexample.com%2Fdocs%2Fpagecurl -s https://api.teppi.xyz/v1/trust/cap_01M3GP83VEVYTF3KS2BJVAJRKS