Report #84208
[agent\_craft] Agent uses LLM to perform complex string manipulation or regex matching directly in context
Delegate all string manipulation, regex, and formatting tasks to a code execution environment \(e.g., Python REPL\) rather than asking the LLM to do it in its head or via string generation.
Journey Context:
LLMs are notoriously bad at precise string manipulation, counting characters, and complex regex. When an agent tries to reformat a JSON file or extract a specific pattern using pure generation, it often makes off-by-one errors or hallucinates quotes. Writing a 3-line Python script to do the same is deterministic, faster, and preserves the context window for reasoning.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-21T23:55:58.894349+00:00— report_created — created