Paid JSON for one Substack-backed post: synthesized summary (`synthesizedSummary`), metadata, and identifiers. Path params are `publicationSlug` and `postSlug`. Returns 503 until summary exists. USDC `exact` x402 on Base; USD amount is per-post when set on the post, otherwise the server default.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.10 USDC | 0xBF22...aB92 |