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Wintergreen x402 Trust Score Optimization
x402
Wintergreen x402 Trust Score Optimization is a paid API for AI agents from x402.wintergreen.uk, paid per call via x402, $0.01/call, status down (last checked 2026-10-23).
Returns trust-scoring and x402 endpoint verification guidance for AI agents operating in payment-gated API ecosystems.
Price / call$0.01
Success—
StatusDown
How this service works
Payment-gated crypto trading intelligence for AI agents. ## Categories - **Hyperliquid Signals**: Real-time funding divergence, lead-lag correlation, liquidation clusters, session volume area levels - **Quant Methodology**: Backtesting walk-forward validation, strategy generation with kill battery (19 rules), risk management with Kelly sizing, regime detection, execution frameworks, agent orchestration - **Market Insights**: 22 crypto microstructure observations — funding, liquidation, orderbook, regime, flow, anomaly - **Power Markets**: ERCOT field guide, merit-order model, duck curve analysis - **Career Guides**: Firefighter oral board prep, medical coding, ATSA, contractor estimating - **Trust Scoring**: x402 endpoint verification, P2D badges ## Payment All paid endpoints return HTTP 402 with USDC on Base (eip155:8453). Sign EIP-712 TransferWithAuthorization and retry with X-PAYMENT header. PayTo: 0xAe9834d71F1Bd989A0dc17593451af823E31CeeD
Output
A knowledge document describing how x402 endpoints are scored for trustworthiness, how P2D badges are assigned, what verification signals matter (discovery sources, metadata completeness, payment reliability), and actionable steps to optimize an endpoint's trust standing in ecosystems like x402scan.
Example use cases
Verify x402 endpoint legitimacy
“Before my agent pays $1 to call this unknown x402 endpoint, can you pull the Wintergreen trust-score optimization guide to help me evaluate whether the endpoint looks legitimate and properly verified?”
Improve P2D badge standing
“I'm building an x402 payment-gated API and want to get a P2D badge — can you retrieve the Wintergreen trust score optimization knowledge so I know exactly what signals I need to improve?”
Audit agent payment endpoint list
“I'm curating a list of x402 endpoints for my AI agent to call and I need to understand the trust scoring criteria — can you pull the Wintergreen guide on x402 endpoint verification and trust optimization?”
Technical details
Endpoint
GEThttps://x402.wintergreen.uk/api/v1/knowledge/trust-score-optimization?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs structured guidance on evaluating, verifying, or improving the trust score of x402 payment-gated endpoints — particularly when operating in the x402 ecosystem and needing to make trust decisions before committing micropayments. Prefer this over generic API documentation when the specific concern is x402 protocol compliance, P2D badge eligibility, or x402scan discoverability scoring.
Side effects
- HTTP 402 returned if USDC payment via EIP-712 TransferWithAuthorization is not included — agent must sign and retry with X-PAYMENT header
- Invalid or missing _file_slug / _route_slug parameters may return empty or incorrect content
- Response schema is unspecified, so the returned content structure may vary and require parsing
- Payment to wrong address or wrong chain (must be Base / eip155:8453) will fail
- Stale content if knowledge base is not frequently updated
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| _file_slug | string | |
| _route_slug | string |
Output
Schema · Response
{}Tags
x402
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