30-day premium subscription for CookBase recipe app: trending sort and premium filters via x402 payment.
What it does
This x402 endpoint grants a 30-day premium entitlement on CookBase (hosted at folio-seven-swart.vercel.app), a curated recipe discovery app. The app lets users search, browse tags, and save favorites to build a personal cookbook. Free users have basic search; paying for this monthly entitlement unlocks premium filters and a "trending" / "popular" sort option for recipes.
The endpoint accepts a POST request and requires an X-PAYMENT header conforming to x402 version 1. Payment is 5 USDC (maxAmountRequired of 5,000,000 in 6-decimal USDC units) on the Base network, sent to address 0x9F02988adB650E55cc5EB5619C383fd223848bb5. The asset contract is the canonical Base USDC token (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The payment timeout is 300 seconds.
Documentation for this endpoint is sparse — there is no OpenAPI spec, no dedicated docs page, and no pricing page on the site. The endpoint is confirmed live (returns a proper 402 challenge). The app itself appears to be a demo or early-stage project by developer "mattdesl," featuring a small set of curated recipes with tipping functionality.
Capabilities
Use cases
- —Unlocking premium search filters on the CookBase recipe app for 30 days
- —Enabling popular/trending sort for recipe discovery
- —Agent-driven purchase of a monthly subscription via x402 protocol on Base
Fit
Best for
- —Users of the CookBase recipe app who want advanced filtering and sorting
- —Developers exploring x402 payment-gated subscription patterns
- —Agents that need to programmatically purchase access to premium content
Not for
- —General-purpose recipe API access (this is an entitlement unlock, not a data API)
- —Users seeking free recipe search (basic search is already free on the app)
Quick start
curl -X POST https://folio-seven-swart.vercel.app/api/x402/entitlements/x402-monthly \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a well-formed x402 challenge with clear pricing (5 USDC on Base, 30-day entitlement). However, there is no OpenAPI spec, no documentation page, no response schema, and no example requests or responses. The app itself is small-scale with limited public information.
Warnings
- —No API documentation or OpenAPI spec available
- —No docs, pricing, or README pages found on the site (all return 404)
- —Response schema for a successful payment is unknown
- —App appears to be early-stage or a demo project with a small recipe catalog
Citations
- —The endpoint returns a 402 challenge requiring 5,000,000 units of USDC on Base networkhttps://folio-seven-swart.vercel.app/api/x402/entitlements/x402-monthly
- —The app is a curated recipe discovery platform with search, tags, and favoriteshttps://folio-seven-swart.vercel.app
- —Premium subscription unlocks popular sorting and premium filtershttps://folio-seven-swart.vercel.app
- —Payment is sent to 0x9F02988adB650E55cc5EB5619C383fd223848bb5 using USDC asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://folio-seven-swart.vercel.app/api/x402/entitlements/x402-monthly