Endpoint · computePOSTapi.delx.ai /api/v1/x402/x402-challenge-shape-check
X402 Challenge Shape Check: X402 Challenge Shape Check checks required top-level fields in a caller-supplied payment challenge from bounded caller-supplied values without an…
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X402 Challenge Shape Check: X402 Challenge Shape Check checks required top-level fields in a caller-supplied payment challenge from bounded caller-supplied values without an external provider. Call X402 Challenge Shape Check before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for X402 Challenge Shape Check as v…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://api.delx.ai/api/v1/x402/x402-challenge-shape-check
MCP server on this host: io.github.davidmosiah/delx-mcp-a2a
Seen
first 35 days ago · last 24 days ago
33 free handshakes
Payment
Pays through
x402 · MPP tempo
Offered on?
Base USDC, Solana, Tempo USDC.e
Listed on?
Base, Solana
Score, from free handshakes onlyweights 2026.09.1
UN
RATED
RATED
0.229 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by liveness · gap to 1.000 is 0.771: 0.144 uncertain ? + 0.628 short ? · 0.221 to D
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.60 | 0.22 | 0.048 | 0.029 | −0.465 | −0.106 | |
| latency p95 it answered as fast as its class |
0.20 | 0.19 | 0.000 | 0.000 | −0.162 | −0.038 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.229 | gap to 1.000 = 0.771 · 0.628 short · 0.144 uncertain | 0.229 | −0.628 | −0.144 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.600 × 0.048 liveness
+ 0.200 × 0.000 latency p95
+ 0.200 × 1.000 price stability
= 0.229 → UNRATED: 33 of 30 paid calls weights 2026.09.1 · 33 samples · seed cap_01M1A5A7EAPFK1RF37EQAB1SHH|2026-08-17T17:40:37.634Z|2026.09.1
Verify it yourself
npx teppi-check https://api.delx.ai/api/v1/x402/x402-challenge-shape-checkcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5A7EAPFK1RF37EQAB1SHH