At Pragma Taipei 2025, Ethereum co-founder Vitalik Buterin warned that Mini Apps relying on proprietary APIs risk creating 'Walled Gardens' that lock users into specific platforms. He emphasized that using such closed systems contradicts blockchain principles aimed at user autonomy and security. Buterin highlighted the danger of Mini Apps that do not adopt standardized interfaces or 'bring your own keys,' which undermines key blockchain guarantees.
