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piker/ai/prompt-io/opencode/20260729T034106Z_922a5df8_p...

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Prompt

Diagnose the live IB reverse-fill failure where reqHistoricalDataAsync() raised API error 10314 because its end date, time, or timezone was invalid.

Response summary

Traced the failure to Client.bars(), where an unfinished EST conversion left the original datetime for ib_async to serialize as YYYYMMDD HH:MM:SS UTC. Converted aware boundaries explicitly to UTC and passed IB’s accepted YYYYMMDD-HH:MM:SS string while retaining a blank latest-request boundary. Added exact request-argument regressions.

Files changed

  • piker/brokers/ib/api.py - explicit UTC-dash history boundary format
  • tests/test_ib_history.py - IB request-format regressions
  • .claude/skills/run-tests/test-harness-reference.md
    • deterministic IB history test mapping
  • ai/prompt-io/opencode/20260729T034106Z_922a5df8_prompt_io.raw.md
    • unedited response record
  • ai/prompt-io/opencode/20260729T034106Z_922a5df8_prompt_io.md
    • provenance metadata and response summary

Human edits

None - generated changes have not been edited by the human.