Availability is estimated from benchmark fixture observations; no paid retry is made.
Invalid x402 Common Mistakes Fixture
Deterministic fixture with common x402 implementation mistakes: ambiguous price, weaker metadata, and inconsistent payment hints.
Endpoint Surface
Request
POST https://invalid.example/api/paid
Price
$0.01
Rail
exact / base
Score Breakdown
Payment correctness checks the unpaid challenge shape and declared x402 requirements, not settlement.
Schema quality rewards crawler-readable manifests, OpenAPI coverage, and catalog metadata.
Price clarity rewards machine-parseable atomic pricing and a human-readable USDC display value.
Network and asset clarity checks whether agents can choose the correct chain and token before signing.
Report history rewards signed evidence, repeat observations, and fresh readiness reports.
Payment Safety
Payment header signed
FalseFacilitator settle called
FalseSpends money
FalseReport History
Source: fixture_reports. Matching: target_url exact, then normalized origin.
| Report | Source | Grade | Score | Verified | Integrity |
|---|---|---|---|---|---|
fixture_invalid_common_mistakes_20260519 |
fixture report | needs work | 61/100 | 2026-05-19T00:00:00Z | True |
fixture_invalid_common_mistakes_20260518 |
fixture report | needs work | 58/100 | 2026-05-18T00:00:00Z | True |