{"service":"webhook-language-tutor-python","description":"Language tutor webhook - phrase help, quizzes, and lesson plans.","routes":[{"path":"/","method":"POST","description":"Main Nexo webhook endpoint (JSON or SSE)"},{"path":"/.well-known/agent.json","method":"GET","description":"Capability discovery metadata"},{"path":"/health","method":"GET","description":"Health check"}],"capabilities":[{"intent":"phrase_help","state":"live"},{"intent":"quiz","state":"live"},{"intent":"lesson_plan","state":"live"}],"auth":"Optional WEBHOOK_SECRET (X-Timestamp + X-Signature)","schema_version":"2026-03"}