> ## Documentation Index
> Fetch the complete documentation index at: https://agenticadvertisingorg-fix-release-bump-classification.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Understanding creative formats and property authorization in AdCP - the foundation for effective advertising workflows.

Before you can effectively buy advertising through AdCP, you need to understand two fundamental capabilities: **what creative formats are supported** and **which properties sales agents are authorized to represent**. This section covers the tools and concepts that form the foundation of AdCP's advertising ecosystem.

## What You'll Learn

### [Implementing Standard Format Support](/dist/docs/2.5.3/media-buy/capability-discovery/implementing-standard-formats) 🎨

Learn how sales agents can support standard creative formats through the reference creative agent. Learn how to:

* Reference standard IAB formats without replicating them
* Implement custom formats for unique inventory
* Use format ID namespacing to prevent conflicts
* Combine standard and custom format support
* Validate format compatibility with advertising products
* Leverage the Standard Creative Agent for standard formats
* Work with publisher-specific creative agents for custom formats

### [Authorized Properties](/dist/docs/2.5.3/media-buy/capability-discovery/authorized-properties) 🔐

Learn how AdCP prevents unauthorized resale and ensures sales agents are legitimate. Understand:

* The problem of unauthorized resale in digital advertising
* How publishers authorize sales agents via `adagents.json`
* How to validate sales agent authorization before purchasing
* Property tags and large-scale authorization management

<Note>
  **Cross-Protocol Foundation**: The `adagents.json` authorization system applies across ALL AdCP protocols (Media Buy, Signals, and future Curation). See the [adagents.json specification](/dist/docs/2.5.3/media-buy/capability-discovery/adagents) for complete implementation details.
</Note>

## Foundation Tasks

These capability discovery tasks provide the reference data needed for effective AdCP workflows:

### [`list_creative_formats`](/dist/docs/2.5.3/media-buy/task-reference/list_creative_formats)

Discover all supported creative formats with detailed specifications including dimensions, file types, duration limits, and technical requirements.

### [`list_authorized_properties`](/dist/docs/2.5.3/media-buy/task-reference/list_authorized_properties)

Get all properties a sales agent is authorized to represent, including property tags for efficient organization and authorization validation data.

## Integration Pattern

Capability discovery typically happens early in your AdCP workflow:

1. **Understand Formats**: Call [`list_creative_formats`](/dist/docs/2.5.3/media-buy/task-reference/list_creative_formats) to learn supported creative types
2. **Validate Authorization**: Use [`list_authorized_properties`](/dist/docs/2.5.3/media-buy/task-reference/list_authorized_properties) to verify sales agent legitimacy
3. **Discover Products**: Search for advertising inventory with [`get_products`](/dist/docs/2.5.3/media-buy/task-reference/get_products)
4. **Plan Creatives**: Match discovered products to available formats for production planning
5. **Execute Campaigns**: Create media buys with confidence in format compatibility and authorization

## Why This Matters

### Creative Formats

* **Production Planning**: Know requirements before creating assets
* **Creative Agents**: Leverage AI-powered agents to build and validate creatives
* **Platform Compatibility**: Ensure creatives work across advertising platforms
* **Cost Efficiency**: Avoid recreating assets due to specification mismatches
* **Quality Assurance**: Meet technical standards for optimal performance
* **Preview Capabilities**: Test creative rendering before campaign launch

### Authorized Properties

* **Fraud Prevention**: Avoid unauthorized sellers and inventory fraud
* **Brand Safety**: Ensure you're buying from legitimate property owners
* **Legal Compliance**: Maintain clear audit trails of authorized transactions
* **Trust Building**: Create confidence in the advertising supply chain

Together, these capabilities provide the foundation for safe, efficient, and effective advertising through AdCP.

## Related Documentation

* **[Task Reference](/dist/docs/2.5.3/media-buy/task-reference/)** - Complete API documentation
* **[Product Discovery](/dist/docs/2.5.3/media-buy/product-discovery/)** - Finding advertising inventory
* **[Creatives](/dist/docs/2.5.3/media-buy/creatives/)** - Creative asset management
* **[Creative Protocol](/dist/docs/2.5.3/creative/)** - Creative agents and manifests
* **[Creative Channel Guides](/dist/docs/2.5.3/creative/channels/video)** - Format examples and patterns
* **[Creative Manifests](/dist/docs/2.5.3/creative/creative-manifests)** - Understanding creative specifications
* **[adagents.json Specification](/dist/docs/2.5.3/media-buy/capability-discovery/adagents)** - Publisher authorization system (applies across all AdCP protocols)