Anthropic's SDK changes breaks non-streaming responses

[monotykamary]

[mcp_agent.llm.augmented_llm] Error: Streaming is strongly recommended for operations that may take longer than 10 minutes. See https://github.com/anthropics/anthropic-sdk-python#long-requests for more details

This might require a bit of a refactor to just get around this.

[evalstate]

What triggers the message?

[monotykamary]

On my side, just running it 🤔

EDIT: it seems that it comes from setting the maxTokens.

[evalstate]

Can you checkout the feat/streaming branch. max_output is now 64k for sonnet, and uses streaming. all lgtm but would appreciate more eyes if possible.

[alaa-eddine]

I'm facing the same issue, and if I try to remove max_tokens the request is rejected as invalid

[evalstate]

Are you running the feat/streaming branch @alaa-eddine ?

[forhad-h]

Claude 3.7 (claude-3-7-sonnet-20250219) is working fine; the error only occurs with Claude 4 (claude-opus-4-20250514 and claude-sonnet-4-20250514).

[evalstate]

OK, just released 0.2.35. I'd recommend not specifying max_output_tokens unless you specifically want to adjust downwards. Defaults for 4 series models are now 32k and 64k for opus and sonnet.

uv pip install --upgrade fast-agent-mcp