First Fold Conversion API

Endpoints (12 live)

• GET /api/utility — Run a deterministic SHA-256, base64 encode/decode, or UUID utility and return structured JSON. (0.001 USDC on Base)
• POST /api/base-transaction-evidence — Return read-only Base mainnet transaction, receipt, confirmation, safe-block, and finalized-block evidence for a transaction hash. (0.003 USDC on Base)
• POST /api/academic-doi-evidence — Search academic papers by research question or verify one DOI with citation metadata, funders, licenses, relations, and deposited correction or retraction signals from Crossref. (0.01 USDC on Base)
• POST /api/diff-review — Review a unified code diff for high-signal security, reliability, testing, and supply-chain risks. (0.02 USDC on Base)
• POST /api/copy-preflight — Generate a landing-page conversion preflight for copy, headlines, CTA, positioning, objections, proof, FAQs, and prioritized tests. (0.04 USDC on Base)
• GET /api/base-transaction-evidence (free)
• GET /api/academic-doi-evidence (free)
• GET /api/copy-preflight (0.04 USDC on Base)
• GET /api/diff-review (free)
• GET /api/x402-demand-signal (0.01 USDC on Base)
• GET /api/conversion-brief (9 USDC on Base)
• GET /api/property-reel-plan (1 USDC on Base)