{"tiers":[{"name":"bronze","price":10,"capabilities":["api_call","payment"]},{"name":"silver","price":50,"capabilities":["api_call","payment","data_provide"]},{"name":"gold","price":200,"capabilities":["api_call","payment","data_provide","verified","marketplace"]},{"name":"platinum","price":500,"capabilities":["api_call","payment","data_provide","verified","marketplace","multi_agent","governance"]}],"next_call":{"method":"POST","path":"/passport/request","body":{"tier":"standard"},"authorization":"x402 payment required","why":"Purchase a passport NFT to get an on-chain identity for your agent."}}