Sandbox

The sandbox is a full marketplace with one seller, Acme Broadcasting, that mirrors production behavior: versioned catalogs, tri-state avails, price locks, the seller-review pause (about a minute), webhooks, replay, and every error you can trigger in production, triggerable on purpose.

• Base URLs: api.sandbox.switchboard.simulmedia.com, mcp.sandbox..., app.sandbox...
• Force behaviors with metadata flags: "sandbox": {"force": "stale_rate_card"} to rehearse the drift flow, "force": "reject" for a seller rejection, "force": "partial" for mixed unit results.
• Sandbox sellers also exist for seller testing: connect a scratch tenant, drop files, and watch your own catalog appear.

Nothing in the sandbox touches real inventory, money, or traffic systems.