{"ok":true,"data":{"name":"Potto Japanese Agent API","description":"Authoritative JLPT-graded Japanese learning dataset: 16,885 original, independently curated learnables (cross-verified against multiple references, citations included), 1,362 lessons, 96 journeys, 20 worlds. JPY-first pricing (1 point = ¥1).","mcp_endpoint":"/mcp","openapi":"/api/v1/openapi.json","docs_url":"https://potto.app/developers/","endpoints":["GET /api/v1/learnables?query=&type=&jlpt_level=&limit=","GET /api/v1/learnables/{id}","GET /api/v1/learnables/{id}/related","GET /api/v1/lessons/{id}?render=raw|plain|resolved","GET /api/v1/journeys/{id}","GET /api/v1/worlds","GET /api/v1/credit-packs"],"auth":"API key via \"Authorization: Bearer potto_ak_…\" or X-API-Key. Keyless requests get bundled evaluation sample data.","pricing":{"currency":"JPY","note":"1 point = ¥1 (fixed peg)","read_jpy":1,"search_jpy":5,"localized_generation_jpy":25},"fair_use":{"daily_call_cap_per_key":2000,"daily_call_cap_per_account":5000,"note":"Caps reset 00:00 UTC and are raised per customer on request. Bulk redistribution / derivative-dataset building is prohibited."},"search_limit_max":20,"signup_url":"https://potto.app/developers","mode":"sample"}}