List ChatGPT Ads campaigns

Lists the campaigns in the advertiser account with status, objective, what the platform bids towards, the lifetime and daily spend limits as decimals in the account currency, the schedule, where they are allowed to run, and any serving issue the platform reports. 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 chatgpt_get_performance; this returns configuration only, with no spend or clicks in it. Returns one row per campaign plus the id every other tool needs. Serving issues are the fastest explanation for a campaign that exists but delivers nothing: an exhausted budget, a missing payment method or an unapproved account will all show up here rather than in the numbers. Archived campaigns are hidden unless you ask for them, because archiving is irreversible on this platform and an archived campaign is never the answer to "what is running".