Declare your advertising inventory for AI sales agents
A standard file at /.well-known/adagents.json that tells AI advertising agents
what you publish, what inventory is available, and which agents are authorized to sell it.
Publishers need a way to declare their properties and authorize specific AI sales agents to sell their inventory. Like robots.txt for advertising, adagents.json gives publishers control over which AI agents can represent their inventory.
List your websites, apps, CTV channels, and other advertising properties with categories and metadata.
Specify exactly which MCP-based sales agents are authorized to sell inventory on your properties.
Domain verification and publisher contact information for agent-to-publisher communication.
Get started with a minimal adagents.json file and place it at your domain's well-known location.
{
"$schema": "https://adcontextprotocol.org/schemas/latest/adagents.json",
"publisher_domain": "publisher.com",
"properties": [
{
"name": "Publisher News",
"domain": "news.publisher.com",
"categories": ["news", "technology"]
}
],
"authorized_agents": [
{
"url": "https://agent.example.com",
"authorized_for": ["display", "video"]
}
]
}
Place this file at https://yourdomain.com/.well-known/adagents.json and AI sales agents will discover your properties and authorization rules.
Build, browse, and learn about the adagents.json standard.
Use our interactive builder to create and validate your adagents.json file.
Get startedExplore publishers and their advertising properties.
View registryFull specification and field reference for adagents.json.
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