feat: add semantic filter type aliases

Add ProductFilters, CreativeFilters, and SignalFilters type aliases to resolve name collisions where multiple `Filters` classes exist in different request modules.

- ProductFilters: Filters for GetProductsRequest (6 fields for product discovery)
- CreativeFilters: Filters for ListCreativesRequest (17 fields for creative library queries)
- SignalFilters: Filters for GetSignalsRequest (4 fields for signal discovery)

These aliases follow the established pattern in aliases.py for resolving discriminated union name collisions. Upstream schemas now properly define Filter classes as nested objects with properties, so the generator creates proper Pydantic models.

Resolves feedback from downstream client regarding Filters type ambiguity.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: bokelley

src/adcp/__init__.py

@@ -67,6 +67,7 @@
     BuildCreativeSuccessResponse,
     CreateMediaBuyErrorResponse,
     CreateMediaBuySuccessResponse,
+    CreativeFilters,
     HtmlPreviewRender,
     InlineDaastAsset,
     InlineVastAsset,
@@ -77,6 +78,7 @@
     PreviewCreativeInteractiveResponse,
     PreviewCreativeManifestRequest,
     PreviewCreativeStaticResponse,
+    ProductFilters,
     PropertyId,
     PropertyIdActivationKey,
     PropertyTag,
@@ -86,6 +88,7 @@
     PublisherPropertiesAll,
     PublisherPropertiesById,
     PublisherPropertiesByTag,
+    SignalFilters,
     SyncCreativesErrorResponse,
     SyncCreativesSuccessResponse,
     TextSubAsset,
@@ -308,6 +311,7 @@
     "BuildCreativeErrorResponse",
     "CreateMediaBuySuccessResponse",
     "CreateMediaBuyErrorResponse",
+    "CreativeFilters",
     "HtmlPreviewRender",
     "InlineDaastAsset",
     "InlineVastAsset",
@@ -318,6 +322,7 @@
     "PreviewCreativeManifestRequest",
     "PreviewCreativeStaticResponse",
     "PreviewCreativeInteractiveResponse",
+    "ProductFilters",
     "PropertyId",
     "PropertyIdActivationKey",
     "PropertyTag",
@@ -327,6 +332,7 @@
     "PublisherPropertiesAll",
     "PublisherPropertiesById",
     "PublisherPropertiesByTag",
+    "SignalFilters",
     "SyncCreativesSuccessResponse",
     "SyncCreativesErrorResponse",
     "TextSubAsset",

src/adcp/types/aliases.py

@@ -672,11 +672,129 @@ def filter_products(props: PublisherProperties) -> None:
     ```
 """
 
+# ============================================================================
+# FILTER TYPE ALIASES - Request Filter Name Collision Resolution
+# ============================================================================
+# The AdCP schemas define multiple `Filters` classes with the same name but
+# different fields for different request types. The generator creates these
+# as local classes within each request module.
+#
+# These aliases resolve the name collision by providing semantic names that
+# clearly indicate which request type each filter belongs to.
+
+from adcp.types.generated_poc.get_products_request import Filters as ProductFiltersInternal
+from adcp.types.generated_poc.get_signals_request import Filters as SignalFiltersInternal
+from adcp.types.generated_poc.list_creatives_request import Filters as CreativeFiltersInternal
+
+ProductFilters = ProductFiltersInternal
+"""Filters for GetProductsRequest.
+
+Used when discovering available advertising products to narrow down results
+based on delivery type, pricing model, format requirements, etc.
+
+Fields:
+- delivery_type: Filter by delivery type (guaranteed/non_guaranteed)
+- is_fixed_price: Filter for fixed price vs auction products
+- format_types: Filter by format types (video, display, audio)
+- format_ids: Filter by specific format IDs
+- standard_formats_only: Only return products accepting IAB standard formats
+- min_exposures: Minimum exposures/impressions needed (≥1)
+
+Example:
+    ```python
+    from adcp import ProductFilters, GetProductsRequest
+
+    filters = ProductFilters(
+        delivery_type="guaranteed",
+        format_types=["video", "display"],
+        min_exposures=10000
+    )
+
+    request = GetProductsRequest(
+        brief="Premium video inventory",
+        filters=filters
+    )
+    ```
+"""
+
+CreativeFilters = CreativeFiltersInternal
+"""Filters for ListCreativesRequest.
+
+Used when querying creative assets from the centralized library to filter
+by format, status, tags, assignment status, and date ranges.
+
+Fields:
+- format: Filter by single creative format type
+- formats: Filter by multiple creative format types
+- status: Filter by approval status (processing, pending_review, approved, rejected)
+- statuses: Filter by multiple approval statuses
+- tags: Filter by tags (all tags must match)
+- tags_any: Filter by tags (any tag must match)
+- name_contains: Filter by creative names containing text (case-insensitive)
+- creative_ids: Filter by specific creative IDs (max 100)
+- created_after: Filter creatives created after date (ISO 8601)
+- created_before: Filter creatives created before date
+- updated_after: Filter creatives updated after date
+- updated_before: Filter creatives updated before date
+- assigned_to_package: Filter creatives assigned to specific package
+- assigned_to_packages: Filter creatives assigned to any of these packages
+- unassigned: Filter for unassigned (true) or assigned (false) creatives
+- has_performance_data: Filter creatives with performance data
+
+Example:
+    ```python
+    from adcp import CreativeFilters, ListCreativesRequest
+
+    filters = CreativeFilters(
+        status="approved",
+        formats=["video", "display"],
+        tags=["holiday", "2024"],
+        has_performance_data=True
+    )
+
+    request = ListCreativesRequest(filters=filters)
+    ```
+"""
+
+SignalFilters = SignalFiltersInternal
+"""Filters for GetSignalsRequest.
+
+Used when discovering audience signals to refine results based on
+catalog type, data providers, pricing, and coverage requirements.
+
+Fields:
+- catalog_types: Filter by catalog type (marketplace, custom, owned)
+- data_providers: Filter by specific data providers
+- max_cpm: Maximum CPM price filter (≥0)
+- min_coverage_percentage: Minimum coverage requirement (0-100)
+
+Example:
+    ```python
+    from adcp import SignalFilters, GetSignalsRequest
+
+    filters = SignalFilters(
+        catalog_types=["marketplace", "owned"],
+        max_cpm=5.00,
+        min_coverage_percentage=80.0
+    )
+
+    request = GetSignalsRequest(
+        signal_spec="Coffee enthusiasts in major metros",
+        deliver_to={...},
+        filters=filters
+    )
+    ```
+"""
+
 # ============================================================================
 # EXPORTS
 # ============================================================================
 
 __all__ = [
+    # Filter type aliases
+    "ProductFilters",
+    "CreativeFilters",
+    "SignalFilters",
     # Activation responses
     "ActivateSignalSuccessResponse",
     "ActivateSignalErrorResponse",