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fix: prevent E2BIG error when system prompt is too long for Claude Code CLI #976

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kamilchm
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@kamilchm kamilchm commented Jul 3, 2025

Context

  • Add system prompt truncation to avoid E2BIG errors
  • Detect memory bank content patterns and truncate before command-line args
  • Preserve essential role definition while removing large memory bank content
  • Add comprehensive tests for truncation scenarios
  • Claude Code CLI loads memory bank from CLAUDE.md anyway, so this is safe

Fixes issue where very long system prompts (especially with memory bank content) would cause subprocess spawn failures due to command-line argument size limits.

…de CLI

- Add system prompt truncation to avoid E2BIG errors
- Detect memory bank content patterns and truncate before command-line args
- Preserve essential role definition while removing large memory bank content
- Add comprehensive tests for truncation scenarios
- Claude Code CLI loads memory bank from CLAUDE.md anyway, so this is safe

Fixes issue where very long system prompts (especially with memory bank content)
would cause subprocess spawn failures due to command-line argument size limits.
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Latest commit: 45298df

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@chrarnoldus
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Would this be a better solution? #1503

@kamilchm
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Absolutely!

@kamilchm kamilchm closed this Jul 25, 2025
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2 participants