curl --request POST \
  --url https://agenticadvertising.org/api/policies/save \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "policy_id": "my_brand_safety",
  "version": "1.0.0",
  "name": "Acme Corp Brand Safety",
  "policy": "Ads must not appear adjacent to content depicting violence...",
  "description": "<string>",
  "jurisdictions": [
    "<string>"
  ],
  "region_aliases": {},
  "policy_categories": [
    "<string>"
  ],
  "channels": [
    "<string>"
  ],
  "effective_date": "<string>",
  "sunset_date": "<string>",
  "governance_domains": [
    "<string>"
  ],
  "source_url": "<string>",
  "source_name": "<string>",
  "guidance": "<string>",
  "exemplars": {
    "pass": [
      {
        "scenario": "<string>",
        "explanation": "<string>"
      }
    ],
    "fail": [
      {
        "scenario": "<string>",
        "explanation": "<string>"
      }
    ]
  },
  "ext": {}
}
'

{
  "message": "<string>",
  "policy_id": "<string>",
  "revision_number": 123
}