php - Marketplace using Paypal -

hi creating mobile app marketplace hoping ebay model implemented. buyer pay seller , take our cut seller. don't want payment ourself sale , handle disputes order shipping or chargebacks.

when sale done on our app, buyer should send payment sellers paypal , paypal handle other stuff regarding disputes or chargebacks.

i want seller link paypal account our app , take permissions future payments , maintain record can calculate fee regarding sales made on our platform. paypal mobile sdk support feature.

but question here how can automate original purchase process? 1 option when sale done, send invoice seller side buyer (possible using paypal rest api) , open invoice pay link on buyer side. once buyer pay invoice , transfer funds seller know sale approved because paypal facilitator have access invoice (we sent invoice buyer have permissions of invoicing of seller account).

but if don't want invoicing system? can implement buyer send funds seller without generating invoice our app. when sale initiated, present buyer page pay directly seller (without involved) , track transaction , make outstanding cut on sale?

my research far

• payapl mobile sdk ios don't allow take permissions invoicing, can take single, future or profile sharing permissions in app
• paypal rest api allow take permissions invoicing not future payments (that necessary take our cut seller's account)
• if use paypal mobile sdk, can take funds in our account not directly our sellers account
• adaptive payments option can take funds buyers , after deducting our cut send rest buyer in case primary recipient , seller secondary, being primary recipient responsible shipping product @ stage don't want. want want seller primary recipient

any regarding our situation appreciated. want automate system somehow apis , sdks without being primary recipient. please give suggestion make reality. thanks

using other payment gateway stripe or braintree not here because in case taking money registered merchants. work paypal handling order related stuff

the express checkout api supports parallel payments, in case specify sellerpaypalaccountid in request. money particular payment sent.

you can use functionality single payment on order, though. can setup single payment , include sellerpaypalaccountid parameter, , money go directly account.

when doing can use own api credentials , no permissions or required 3rd party account send funds directly them.

this paypal php sdk make express checkout api calls quick , easy you, setup simple php services hit mobile app(s).