# Start Here

Building with an AI agent? Start at https://docs.payme.io/agents.md

How platforms and marketplaces work on PayMe, end to end

- [Start here: build a platform or marketplace on PayMe](/marketplaces-and-platforms/start-here/how-platforms-work): Map of the PayMe partner model. A partner holds payme_client_key and a client password; each seller has its own MPL (seller_payme_id), public key, balance and bank account. Steps: onboard sellers (create-seller, documents, approval), enable payment methods (vas-enable), create sales with the seller's MPL and market_fee, handle callbacks, pay out (withdrawals), report. PayMe sets partner-level defaults: callback and return URLs, required seller fields, withdrawal plan, price range, rate limit. Seller callbacks go to the partner's default callback URL.