{"service":"Instagram webhook + send API","docs":"GET /docs — Swagger UI","openapi":"GET /openapi.json","redoc":"GET /redoc","endpoints":{"webhook_verify":"GET /webhook — Meta verification","webhook_in":"POST /webhook — Instagram messaging","send_json":"POST /api/send-message — опційно reply_to_mid (відповідь на повідомлення в IG)","send_multipart":"POST /api/send-message-with-file — form reply_to_mid","uploads":"GET /uploads/... — public files for Meta image URLs","telegram_callback":"POST /telegram/webhook?secret=... — кнопки алертів"}}