Add VPC endpoint support to BedrockModel class - Add optional endpoin…

[dbavro19]

Description

Adds support for custom endpoint URLs in the BedrockModel class to enable connectivity through AWS VPC endpoints (PrivateLink). This feature allows users to specify a custom endpoint URL for organizations that require all Bedrock traffic to flow through VPC endpoints for security and compliance reasons.

Changes Made:

• Add optional endpoint_url parameter to BedrockModel constructor
• Pass endpoint_url to boto3 client for VPC endpoint connectivity
• Update BedrockConfig TypedDict to include endpoint_url field
• Update constructor docstring to document VPC endpoint usage
• Maintains backward compatibility with existing code

Usage Example:

from strands.models import BedrockModel

# Using VPC endpoint
model = BedrockModel(
    model_id="us.anthropic.claude-sonnet-4-20250514-v1:0",
    endpoint_url="https://vpce-1234567-abcd.bedrock-runtime.us-west-2.vpce.amazonaws.com",
    region_name="us-west-2"
)

Related Issues

Resolves: Issue #496

Documentation PR

Type of Change

New feature

Testing

How have you tested the change?

• Verified backward compatibility - existing code continues to work unchanged
• Tested VPC endpoint parameter acceptance and storage in config
• Confirmed endpoint_url is properly passed to boto3 client
• Validated BedrockConfig TypedDict includes new parameter
• I ran hatch run prepare

Checklist

• I have read the CONTRIBUTING document
• I have added any necessary tests that prove my fix is effective or my feature works
• I have updated the documentation accordingly (docstring updates)
• I have added an appropriate example to the documentation to outline the feature, or no new docs are needed
• My changes generate no new warnings
• Any dependent changes have been merged and published

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