# Proposals

A [`Proposal`](https://developers.google.com/authorized-buyers/apis/marketplace/reference/rest/v1/buyers.proposals)
represents a negotiation between a buyer and a publisher. Proposals contain one
or more [`deals`](https://developers.google.com/authorized-buyers/apis/guides/marketplace/deals).

Buyers and their clients can use the Authorized Buyers Marketplace UI to view
and negotiate proposals. A client's access to features in the Authorized
Buyers Marketplace UI depends on the client's
[`role`](https://developers.google.com/authorized-buyers/apis/marketplace/reference/rest/v1/buyers.clients#clientrole).

Only buyers can use the Marketplace API.

To learn more about clients, and how to configure
access to the Authorized Buyers Marketplace UI for one of your clients, see
[clients](https://developers.google.com/authorized-buyers/apis/guides/marketplace/clients) and
[client users](https://developers.google.com/authorized-buyers/apis/guides/marketplace/client-users).

If the `buyer` field is populated in a `Proposal`, then the publisher is
negotiating directly with you. If `client` is populated, then the publisher is
negotiating with one of your clients. You can negotiate on behalf of your
buyer account, or any `Client` associated with your account.