How context length affects Claude Code behavior (what I have noticed)

How context length affects Claude Code behavior (what I've noticed) I don't have visibility into the actual context window usage during a session. But after enough sessions, I've noticed patterns that seem to correlate with context filling up. Early session behavior Prompts get followed precisely. Constraints are respected. The agent checks its work, asks when uncertain, produces output that matches what was asked. Mid-session behavior Still mostly good, but occasionally the agent will make a decision without flagging it. A constraint that was respected at the start gets quietly bent.