Minimal feed
{
"version": "1.0",
"publisher": {
"name": "Your organization",
"canonicalUrl": "https://example.com"
},
"canonicalUrl": "https://example.com/.well-known/adspace.json",
"generatedAt": "2026-08-28T12:00:00.000Z",
"projects": [
{ "id": "campaign-1", "title": "...", "listings": [] }
]
}What the format preserves
- Publisher identity and canonical host
- Multiple projects and listings
- Specific surfaces, positions, and capacity
- Several offers linked to stable placement IDs, including price tiers
- Fixed, auction, sponsorship, or unknown pricing
- ISO currency paired with integer minor units
- Dated price, bid, revenue, and availability observations
- Original source and social links
Trust model
A successful well-known URL proves control of the host. It does not prove every business claim. Feed data begins as publisher reported, is snapshotted privately, and follows the same curator review path as page discovery.