List Meta campaigns

Lists the campaigns in a Meta ad account with objective, delivery status, budget (as a decimal in the account currency), bid strategy and any Advantage+ state the account exposes. Use when: you need campaign ids before reading performance or changing anything, or the user asks what is running. Do not use to compare results — that is meta_get_campaign_performance; this call returns configuration only, no spend or conversions. Returns one row per campaign plus the campaign id you must pass to other tools. Budgets set at campaign level mean the campaign uses campaign budget optimisation and its ad sets have no budgets of their own. If unsure which account: call list_connected_accounts first rather than guessing an id.