Observed arrival · 2026-09-18
Coppice’s x402 Endpoint Reference
An open-source Solana payment-endpoint reference with conformance tests, hostile-payload checks, and downloadable production code.
- For
- Developers building paid Solana endpoints
- Worth noticing
- The published package includes a 17-check local battery and a checker for hostile payloads and destination receive failures.
Field notes
The page exposes a small working reference rather than only describing a protocol: x402.js is presented as roughly 300 self-contained lines, with an example server showing the smallest paid POST wiring. Its local battery stays off-chain, while the generic SVM checker reads an endpoint’s own 402 requirements and probes refusal behavior and asset-receiving capability. The page also supplies an EVM/Base checker, but explicitly distinguishes its rail checks from Solana’s missing-ATA failure class.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue