# Devryno

Tiny paid web services for agents.

Website: https://devryno.com
x402 discovery: https://devryno.com/.well-known/x402
OpenAPI: https://devryno.com/openapi.json
Catalog: https://devryno.com/catalog.json
Sample merchant feed: https://devryno.com/examples/google-merchant-feed.xml
Sample merchant feed audit response: https://devryno.com/examples/merchant-feed-audit.json
Sample batch response: https://devryno.com/examples/feed-batch-match.json
Google Merchant Center price mismatch use case: https://devryno.com/use-cases/google-merchant-center-price-mismatch
Commerce schema mismatch use case: https://devryno.com/use-cases/commerce-schema-mismatch
Feed/page mismatch use case: https://devryno.com/use-cases/feed-page-match
Base USDC receipt use case: https://devryno.com/use-cases/base-usdc-receipt
Human Base USDC checkout: https://devryno.com/buy/merchant-feed-audit
Machine-readable Base USDC quote: https://devryno.com/quote/merchant-feed-audit?url={public-product-feed-url}&limit={1-10}
Base USDC Receipt checkout: https://devryno.com/buy/base-usdc-receipt
Base USDC Receipt quote: https://devryno.com/quote/base-usdc-receipt?subjectTx={base-transaction-hash}&recipient={optional-recipient}&minAmount={optional-usdc-amount}

Primary paid endpoint:
- Merchant Feed Audit: GET https://devryno.com/pay/merchant-feed-audit?url={public-product-feed-url}&limit={1-10} - $0.250 USDC on Base. Fetches a public Google Merchant/RSS/Atom/CSV/TSV product feed, parses rows, then checks feed values against each public product page.
- Non-x402 Merchant Feed Audit claim: GET https://devryno.com/claim/merchant-feed-audit?url={public-product-feed-url}&limit={1-10}&tx={base-transaction-hash} - send 0.25 USDC on Base to 0xdD1729943bf7C408456cef52886ad12B05B57dC2, then paste the transaction hash as receipt.
- Non-x402 Merchant Feed Audit quote: GET https://devryno.com/quote/merchant-feed-audit?url={public-product-feed-url}&limit={1-10} - returns exact Base USDC payment instructions, wallet payment URI, checkout URL, and claim URL template.
- Base USDC Receipt claim: GET https://devryno.com/claim/base-usdc-receipt?subjectTx={base-transaction-hash}&recipient={optional-recipient}&minAmount={optional-usdc-amount}&tx={devryno-payment-transaction-hash} - send 0.10 USDC on Base to 0xdD1729943bf7C408456cef52886ad12B05B57dC2, then paste the payment transaction hash to turn the subject transaction into a clean JSON receipt.
- Base USDC Receipt quote: GET https://devryno.com/quote/base-usdc-receipt?subjectTx={base-transaction-hash}&recipient={optional-recipient}&minAmount={optional-usdc-amount} - returns exact Base USDC payment instructions and claim URL template for the receipt service.
- Feed Batch Match: GET https://devryno.com/pay/feed-batch-match?items={url-encoded-json-array-up-to-10-feed-rows} - $0.100 USDC on Base. Compares up to 10 submitted feed rows with public product-page signals and returns per-row evidence plus an overall verdict.
- Feed Page Match: GET https://devryno.com/pay/feed-page-match?url={public-product-url}&price={feed-price}&currency={feed-currency}&availability={optional-feed-availability} - $0.025 USDC on Base. Compares submitted feed values with public product-page signals from JSON-LD, Open Graph, microdata and visible text.
- Commerce Page Audit: GET https://devryno.com/pay/commerce-page-audit?url={public-product-url} - $0.025 USDC on Base. Audits Product/Offer JSON-LD, Open Graph and microdata price signals, visible price, availability, canonical URL, robots reachability, and noindex.
- Commerce Schema Fix: GET https://devryno.com/pay/commerce-schema-fix?url={public-product-url} - $0.050 USDC on Base. Generates a repair plan plus draft schema.org Product/Offer JSON-LD and price meta tags after checking page signals.
- Offer Proof: GET https://devryno.com/pay/offer-proof?url={public-product-url} - $0.010 USDC on Base. Extracts Product/Offer JSON-LD and compares it with a visible price candidate.

Other endpoints include HTML to markdown, Open Graph extraction, DNS lookup, HTTP headers, RSS parsing, sitemap parsing, JSON-LD extraction, Base gas, ERC-20 metadata, and SHA-256 hashing.