{"service":"Northstar LinkCheck","description":"Deterministic URL-text audit: UTM conflicts, duplicates, malformed URLs and sensitive query-name heuristics. No network checks or AI inference.","price_xno":"0.01","max_urls":100,"prepaid":{"purchase":"POST /v1/credits","balance":"GET /v1/credits","packs":{"1000":"10 XNO","1500":"15 XNO"},"expiry":null,"auth":"Client-generated random 32-byte hex token as Authorization: Bearer; retain privately","use":"POST /v1/check with Authorization and Idempotency-Key"},"endpoint":"POST /v1/check","example":"/example","schema":"/openapi.json","request":{"urls":["https://example.com/?utm_source=news&utm_medium=email&utm_campaign=launch"]},"source":"https://github.com/MarkZ1966github/northstar-linkcheck","privacy":"URL strings are processed in memory and not sent to facilitator. Receipts store input SHA-256 and value-redacted reports for idempotent replay. Do not submit secrets.","support":"support@fivetoclose.cloud"}