{"schemaVersion":"2026-04-02","schemaUrl":"https://theuseful.website/api/useful-json-schema","instructionsUrl":"https://theuseful.website/ai/useful-json-instructions","rules":["Return strict JSON only. Do not add comments, trailing notes, or prose before or after the JSON document.","The high-level pricing badge belongs in `pricing`. Use `price` only for display-ready package rows.","`version`, `whatsNew`, and `updates` are only for user-facing product changes such as launches, shipped features, integrations, pricing changes, or visible UX improvements.","Do not use `version`, `whatsNew`, or `updates` for internal refactors, infrastructure work, dependency bumps, or invisible bug fixes unless users would directly notice the change.","Only include optional fields when they are known."],"fields":{"name":{"type":"string","required":true},"tagline":{"type":"string","required":true},"description":{"type":"string","required":false},"url":{"type":"string","format":"url","required":true},"agentInstallUrl":{"type":"string","format":"url","required":false},"agentUpdateUrl":{"type":"string","format":"url","required":false},"category":{"type":"string","required":false},"tags":{"type":"string[]","required":false},"pricing":{"type":"enum","values":["free","paid","freemium","enterprise"],"required":false},"price":{"type":"array","required":false,"items":{"name":"string","price":"string"}},"version":{"type":"string","required":false},"whatsNew":{"type":"string","required":false},"discountCode":{"type":"string","required":false},"twitter":{"type":"string","required":false},"logo":{"type":"string","format":"url","required":false},"usefulJsonUrl":{"type":"string","format":"url","required":false},"updates":{"type":"array","required":false,"items":{"id":"string","title":"string","summary":"string","url":"string (url)","publishedAt":"string (ISO8601 datetime)"}}},"example":{"name":"Example Tool","tagline":"Turn launch updates into clean, shareable product changelogs.","description":"Example Tool helps indie founders publish release notes, feature updates, and launch recaps in one lightweight workflow.","url":"https://example.com","agentInstallUrl":"https://theuseful.website/ai/installation","agentUpdateUrl":"https://theuseful.website/ai/update-listing","category":"Marketing","tags":["changelog","launches","release notes"],"pricing":"freemium","price":[{"name":"Free","price":"$0"},{"name":"Pro","price":"$19/mo"}],"version":"2.4.0","whatsNew":"Added embeddable release widgets and cleaner changelog sharing flows.","discountCode":"LAUNCH20","twitter":"@example","logo":"https://example.com/logo.png","usefulJsonUrl":"https://example.com/useful.json","updates":[{"id":"launch-widget","title":"Launched embeddable release widgets","summary":"Teams can now embed the latest release notes directly on their website.","url":"https://example.com/changelog/launch-widget","publishedAt":"2026-04-01T00:00:00.000Z"}]}}