Custom Metadata tool #163
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Custom Metadata tool #163
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…nd merge generic ones into search_assets_tool
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Oct 27, 2025
| attributes_list_for_prompt.append(f"{attr_name}:{attr_desc}") | ||
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| base_description = attr_def.description or "" | ||
| enhanced_description = base_description |
| ) | ||
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| # Process explicit custom metadata negative conditions | ||
| if custom_metadata_negative_conditions: |
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why are negative conditions separately processed? Isn't it just a operator difference?
| - description: Description of the custom metadata set | ||
| - attributes: List of attribute definitions with name, display_name, data_type, | ||
| description, and optional enumEnrichment (with allowed values) | ||
| - id: GUID of the custom metadata definition |
| ), | ||
| "gte": lambda custom_metadata_field_class, | ||
| value: custom_metadata_field_class.gte(value), | ||
| "match": lambda custom_metadata_field_class, |
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how will the LLM know all the allowed values?
modelcontextprotocol/server.py
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| assets = search_assets( | ||
| conditions={ | ||
| "custom_metadata": { | ||
| "Data Quality.quality_score": { |
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shouldn't the LLM use the names rather than displayNames for this?
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Changes from Original MCP-8 Implementation
Removed separate
custom_metadata_conditionsparameter - Custom metadata filters are now part of the mainconditionsparameter under a nestedcustom_metadatakey for consistency with standard attributes.Simplified the nested structure - Changed from 4-level nested
custom_metadata_filter+property_filtersformat to simple dot notation:"SetName.AttributeName": value.Removed custom API code - Deleted 69 lines of manual HTTP request handling in
settings.py(includingbuild_api_url(),get_atlan_typedef_api_endpoint(), andmake_request()methods).Switched to PyAtlan native classes - Now uses
CustomMetadataCacheandEnumCachefrom PyAtlan instead of making direct API calls to fetch typedefs.Unified processing logic - Removed the separate
_process_custom_metadata_condition()function (~90 lines). Custom metadata now uses the same_process_condition()function as standard attributes.