fix: Use tokens= instead of usage= on LDAIMetrics constructors#30
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- bedrock_example.py and langgraph_agent_example.py both passed usage= to LDAIMetrics(...) constructors, which raises TypeError on Python AI SDK 0.16+. The dataclass field is tokens. Refs AIC-2383 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The tokens= constructor kwarg requires SDK 0.20+; 0.19 still uses usage=. Bump the pyproject.toml pins across all 10 example projects so users land on a compatible SDK. Refs AIC-2383 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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keelerm84
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May 14, 2026
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Summary
LDAIMetrics(..., usage=...). The PythonLDAIMetricsdataclass never had ausagefield — onlytokens— so these constructors raiseTypeErrorat runtime on current SDK.tokenspost-0.20.LDAIMetricSummary(the read-side type returned to user code) DOES use.usagein Python — that's unchanged and intentional.Refs AIC-2383. This PR is part of the AI Configs docs/example modernization sweep tracked in
python-agent-work/all-docs-review.md.Test plan
python -m py_compileon both filesbedrock_example.pyagainstLAUNCHDARKLY_SDK_KEYto confirm noTypeErroron the metrics extractor pathlanggraph_agent_example.py🤖 Generated with Claude Code