{"success":true,"packages":[{"id":"starter","calls":50,"priceUsd":0.1,"priceUsdc":"100000","perCallUsd":"0.002000","expiresIn":"7 days"},{"id":"standard","calls":250,"priceUsd":0.4,"priceUsdc":"400000","perCallUsd":"0.001600","expiresIn":"7 days"},{"id":"pro","calls":1000,"priceUsd":1,"priceUsdc":"1000000","perCallUsd":"0.001000","expiresIn":"7 days"}],"howToActivate":{"step1":"Choose a package and pay via x402 or MPP to the payTo address","step2":"POST /v1/sessions/activate with { packageId, txHash, walletOrCustomer }","step3":"Receive session token — include in requests as X-Session-Token header","step4":"All paid endpoints become accessible without per-call payment"}}