{"name":"tabularium","pitch":"Four calls. Fixed prices. Your wallet is your account. Every write is hash-chained and signed.","network":"base","payTo":"0x951BD91AD61d2D867F21b54D2f717D8FFF4aD28a","x402":{"version":2,"network":"eip155:8453","scheme":"exact","asset":"USDC","header":"PAYMENT-SIGNATURE"},"calls":[{"call":"POST /write","price":"$0.003","body":{"key":"string","value":"string","idempotency_key":"string, optional: a retry with the same id and body returns the original entry instead of appending again"}},{"call":"GET /read?key=","price":"$0.002"},{"call":"POST /renew","price":"$0.25"},{"call":"GET /export?since=","price":"$0.01"}],"free":["GET /menu","GET /head?wallet=0x...","GET /stats"],"policy":{"termDays":30,"graceDays":90,"maxValueBytes":65536,"keyPattern":"^[A-Za-z0-9._:\\/-]{1,128}$","billing":"write and read are charged only if they succeed (HTTP < 400). renew and export settle before running; a free pre-check rejects a missing workspace first. One signed payment buys one call: a reused payment gets 409 and is not charged. A replayed idempotent write succeeds and is charged like any call.","idempotencyDays":7,"lapse":"After the term: read, export and renew still work for the grace period; writes do not. Data is deleted only after grace ends."},"signing":{"alg":"Ed25519","publicKeyHex":"111f5e97ab8eb6feded9e98c72983d492b912c3ca00304cb616fe01cc233b968","headMessage":"omega/v1/head\\n<wallet>\\n<seq>\\n<hash>","retired":[{"publicKeyHex":"5599f548393f2f2e1e694361a06d76d06fd3dc6cbe2d985d28f3a533025798e3","usedUntil":"2026-10-26","reason":"testnet launch key; its private half was exposed in a chat, so treat signatures from it as testnet-only"}]}}