Description

Our Anthropic model provider passes along all document content in the same manner. However, we need special handling for plain text documents (docs). This PR adds the fix.

Related Issues

strands-agents/tools#53

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Other (please describe):

Testing

• hatch fmt --linter
• hatch fmt --formatter
• hatch test --all
• Verify that the changes do not break functionality or introduce warnings in consuming repositories: agents-docs, agents-tools, agents-cli
• hatch run test-lint
• python test_doc.py: Ran the following test script:

from strands import Agent
from strands.models.anthropic import AnthropicModel

with open("cat.wikipedia.page1.txt", "rb") as fp:
    doc = fp.read()

agent = Agent(
    messages=[
        {
            "role": "user",
            "content": [
                {
                    "document": {
                        "format": "txt",
                        "name": "test doc",
                        "source": {
                            "bytes": doc,
                        },
                    },
                },
            ],
        },
    ],
    model=AnthropicModel(client_args={"api_key": "***"}, model_id="claude-3-5-sonnet-latest", max_tokens=8000)
)
agent("Can you summarize the provided document?")

Checklist

• I have read the CONTRIBUTING document
• I have added tests that prove my fix is effective or my feature works
• I have updated the documentation accordingly
• I have added an appropriate example to the documentation to outline the feature
• My changes generate no new warnings
• Any dependent changes have been merged and published

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