ListKnowledgeBases
List all available Amazon Bedrock Knowledge Bases and their data sources.
This tool returns a mapping of knowledge base IDs to their details, including:
- name: The human-readable name of the knowledge base
- data_sources: A list of data sources within the knowledge base, each with:
  - id: The unique identifier of the data source
  - name: The human-readable name of the data source
## Example response structure:
```json
{
    "kb-12345": {
        "name": "Customer Support KB",
        "data_sources": [
            {"id": "ds-abc123", "name": "Technical Documentation"},
            {"id": "ds-def456", "name": "FAQs"}
        ]
    },
    "kb-67890": {
        "name": "Product Information KB",
        "data_sources": [
            {"id": "ds-ghi789", "name": "Product Specifications"}
        ]
    }
}
```
## How to use this information:
1. Extract the knowledge base IDs (like "kb-12345") for use with the QueryKnowledgeBases tool
2. Note the data source IDs if you want to filter queries to specific data sources
3. Use the names to determine which knowledge base and data source(s) are most relevant to the user's query