# Reference Integrity API > Deterministic source-processing APIs. The service does not fabricate references, execute webpage JavaScript, bypass access controls, or OCR scanned PDFs. Base URL: https://dana.tail05824e.ts.net OpenAPI: https://dana.tail05824e.ts.net/openapi.json Interactive docs: https://dana.tail05824e.ts.net/docs Privacy: https://dana.tail05824e.ts.net/privacy Terms: https://dana.tail05824e.ts.net/terms Support: danamohammadkhidhir@gmail.com ## Invocable products - POST /v1/literature/verify-references: verify supplied DOIs and conservatively match 1-25 citations against Crossref metadata. - POST /v1/web/markdown: convert one public static HTML page to clean Markdown. - POST /v1/documents/markdown: convert one native-text PDF, up to 8 MB and 10 pages, to page-separated Markdown. Scans are rejected. ## Current access - POST /v1/web/markdown: x402 v2 exact, USD 0.01, X Layer eip155:196, USDâ‚®0; trust the live 402 challenge. - GET /health/live and GET /health/ready are free health endpoints. - Runtime HTTP responses override cached directory metadata. - Never send a wallet private key, recovery phrase, API secret, confidential manuscript, or unauthorized document. ## Discovery - Canonical contract: https://dana.tail05824e.ts.net/openapi.json - Compatibility manifest: https://dana.tail05824e.ts.net/.well-known/ai-plugin.json - Sitemap: https://dana.tail05824e.ts.net/sitemap.xml