Paid JSON for one Substack-backed newsletter, blog, or podcast post: synthesized summary (`synthesizedSummary`), metadata, and identifiers for financial analysis. Path params are `publicationSlug` and `postSlug`. Returns 503 until summary exists. USDC `exact` x402 on Base or Solana; USD amount is per-post when set on the post, otherwise the server default.

Paid JSON for stock-picker calls from financial newsletters and investing articles. Query params: optional `date=YYYY-MM-DD` for one UTC effective day, optional `limit`. Default (omit `date`) returns the latest UTC effective day with picks. Rows missing publication timestamps may use extractedAt for the effective day. Returns 404 when no picks exist for the day. USDC `exact` x402 on Base or Solana; amount is the flat stock-picks unit price times distinct attributed source posts returned (call GET /api/v1/stock-picks/quote for the exact total).

Paid JSON for stock-picker calls (API V2). Bearer API key / JWT / OAuth subscribers (PRO/EXPERT) are served without payment; everyone else pays per use via x402. Query params: optional `date=YYYY-MM-DD`, or `from`/`to` range (subscribers), plus `limit`, `limitDays`, `cursor`, `author`, `direction`, `query`, `sort`, `includePrices`. Rows include evidence quotes, article URLs, and direction-adjusted prices. Priced per distinct source post (call GET /api/v2/stock-picks/quote for the exact total).