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Solana's x402 micropayment rail: HTTP 402 facilitator scheme, one-line monetization middleware, payment channels, on-chain escrow settlement, and an agent wallet kit.
Scoring was not performed
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-23 | F | 0 | 2026-07-28+ | v2 |