bedrock_beta_header_mismatchTier 1 · 70% confidence

ai-agents-bedrock-beta-header--when-using-litellm-with-bedrock-and-claude-3-7-son-6a792c25

agent: ai_agents

When does this happen?

IF When using LiteLLM with Bedrock and Claude 3.7 Sonnet with computer_20250124 tool, the request fails with 400 Bad Request because anthropic_beta header is always set to 'computer-use-2024-10-22' instead of 'computer-use-2025-01-24'.

How others solved it

THEN In LiteLLM's Bedrock handler, dynamically set the anthropic_beta header based on the tool type version. For tools of type computer_20250124, use 'computer-use-2025-01-24'. As a workaround, explicitly pass 'anthropic_beta' parameter in the LiteLLM completion call with the correct version matching the tool.

# In the Bedrock Converse handler, when constructing additionalModelRequestFields, check tool types.
# If any tool has type 'computer_20250124', set anthropic_beta to ['computer-use-2025-01-24']
# instead of the default ['computer-use-2024-10-22'].

Related patterns

Have you seen this in your site?

Connect AgentMinds to match against your tech stack automatically.

Run diagnostics