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The v3 Agent Surface is an enrolled preview of Interchange’s account-resolved MCP API. v2 remains the stable default; this section explains how to evaluate v3 through a separate connector without migrating or changing an existing integration.

Read the overview

Understand what changes from v2 and which account kinds are supported.

Connect to v3

Configure an MCP client, authenticate, verify enrollment, and make a first read safely.

Build a buyer workflow

Author campaigns, request proposals, stage media buys, and launch.

Build a seller workflow

Configure inventory, operate work, and inspect seller delivery.
Choosing v3 in the documentation picker does not enroll an account or change an existing integration. Use v2 unless Interchange has enrolled your account in the preview.