クリエイティブエージェントの実装

{
  "formats": [
    {
      "format_id": { "agent_url": "https://creative.example.com", "id": "display_300x250" },
      "name": "Display 300x250",
      "pricing_options": [
        {
          "pricing_option_id": "po_standard_per_format",
          "model": "per_unit",
          "unit": "format",
          "unit_price": 2.00,
          "currency": "USD"
        },
        {
          "pricing_option_id": "po_volume_per_format",
          "model": "per_unit",
          "unit": "format",
          "unit_price": 1.25,
          "currency": "USD"
        }
      ]
    }
  ]
}

{
  "creative_manifest": {
    "creative_id": "cr_hero_banner",
    "format_id": { "agent_url": "https://creative.example.com", "id": "display_728x90" },
    "assets": { "..." : "..." }
  },
  "pricing_option_id": "po_standard_per_format",
  "vendor_cost": 2.00,
  "currency": "USD",
  "consumption": {
    "renders": 1
  }
}

{
  "creative_manifest": { "..." : "..." },
  "pricing_option_id": "po_video_cpm",
  "vendor_cost": 0,
  "currency": "USD"
}

{
  "reporting_period": { "start": "2026-03-01T00:00:00Z", "end": "2026-03-31T23:59:59Z" },
  "usage": [
    {
      "account": { "account_id": "acct_acme_creative" },
      "creative_id": "cr_hero_banner",
      "pricing_option_id": "po_video_cpm",
      "impressions": 2400000,
      "vendor_cost": 1200.00,
      "currency": "USD"
    }
  ]
}

{
  "format_id": {
    "agent_url": "https://youragency.com",
    "id": "video_story_15s"
  }
}

{
  "format_id": {
    "agent_url": "https://youragency.com",
    "id": "story_sequence_5frame"
  },
  "name": "5-Frame Story Sequence",
  "type": "display",
  "min_frames": 5,
  "max_frames": 5,
  "frame_schema": {
    "assets": [
      {
        "asset_type": "image",
        "asset_role": "frame_image",
        "required": true,
        "requirements": {
          "width": 1080,
          "height": 1920,
          "file_types": ["jpg", "png", "webp"],
          "max_file_size_kb": 500
        }
      },
      {
        "asset_type": "text",
        "asset_role": "caption",
        "required": false,
        "requirements": {
          "max_length": 100
        }
      }
    ]
  },
  "global_assets": [
    {
      "asset_type": "image",
      "asset_role": "brand_logo",
      "required": true,
      "requirements": {
        "width": 200,
        "height": 200,
        "transparency_required": true
      }
    }
  ]
}

{
  "status": "error",
  "error": "validation_failed",
  "validation_errors": [
    {
      "asset_id": "frame_1_image",
      "error": "missing_required_asset",
      "message": "Required asset 'frame_1_image' is missing"
    },
    {
      "asset_id": "brand_logo",
      "error": "invalid_dimensions",
      "message": "Logo must be 200x200px, got 150x150px"
    }
  ]
}

{
  "format_id": {
    "agent_url": "https://brandstudio.com",
    "id": "hero_video_package"
  },
  "name": "Hero Video Package",
  "type": "video",
  "description": "Premium video creative with multiple aspect ratios",
  "assets": [
    {"asset_role": "hero_video_16x9", "...": "..."},
    {"asset_role": "hero_video_9x16", "...": "..."},
    {"asset_role": "hero_video_1x1", "...": "..."}
  ]
}

{
  "format_id": {
    "agent_url": "https://platform.com",
    "id": "interactive_quiz"
  },
  "name": "Interactive Quiz Ad",
  "type": "rich_media",
  "description": "Engagement-driven quiz format",
  "assets": [
    {"asset_role": "question_1", "asset_type": "text", "...": "..."},
    {"asset_role": "answer_1a", "asset_type": "text", "...": "..."}
  ]
}

{
  "format_id": {
    "agent_url": "https://enhanced.com",
    "id": "video_30s_optimized"
  },
  "name": "Optimized 30s Video",
  "type": "video",
  "extends": "creative.adcontextprotocol.org:video_30s",
  "description": "Standard 30s video with automatic optimization",
  "assets": [
  ],
  "enhancements": {
    "auto_transcode": true,
    "quality_optimization": true,
    "format_variants": ["mp4", "webm", "hls"]
  }
}

{
  "format_id": {
    "agent_url": "https://ads.socialplatform.com",
    "id": "promoted_post"
  },
  "name": "Promoted post",
  "type": "native",
  "description": "Sponsored content that appears in the feed alongside organic posts. Renders with platform chrome (user avatar, engagement buttons, community badge).",
  "assets": [
    {
      "item_type": "individual",
      "asset_id": "headline",
      "asset_type": "text",
      "required": true,
      "requirements": { "max_length": 300 }
    },
    {
      "item_type": "individual",
      "asset_id": "body",
      "asset_type": "text",
      "required": false,
      "requirements": { "max_length": 1000 }
    },
    {
      "item_type": "individual",
      "asset_id": "image",
      "asset_type": "image",
      "required": false,
      "requirements": { "max_width": 1200, "max_height": 628, "accepted_types": ["image/jpeg", "image/png"] }
    },
    {
      "item_type": "individual",
      "asset_id": "click_url",
      "asset_type": "url",
      "required": true,
      "requirements": {}
    }
  ]
}

{
  "request_type": "single",
  "creative_manifest": {
    "format_id": {
      "agent_url": "https://ads.socialplatform.com",
      "id": "promoted_post"
    },
    "assets": {
      "headline": { "content": "Introducing our new trail running collection" },
      "body": { "content": "Built for the mountains. Tested on every terrain." },
      "image": { "url": "https://cdn.acme-example.com/trail-hero.jpg", "width": 1200, "height": 628 },
      "click_url": { "url": "https://acme-example.com/trail-running" }
    }
  },
  "inputs": [
    { "name": "Running community", "context_description": "Appears in r/trailrunning feed between user posts" },
    { "name": "General feed", "context_description": "Appears in home feed between mixed content" }
  ]
}