The Context Window Is Full Before the First Prompt — When Project Rules in Claude Code Become a Fixed Cost of Every Session

A subagent in Claude Code is supposed to answer a one-line question about the tool's documentation. It aborts before taking its first step: Prompt is too long, 347,814 tokens against a limit of 200,000. The question itself had loaded nothing. What had loaded were the project instructions that every session in this repository receives at start. The... Weiterlesen: The Context Window Is Full Before the First Prompt — When Project Rul…