Claude Code deletes the TaskOutput tool and makes Claude read background task output with Read
GitHub·medium signal
v2.1.277 removes the deprecated TaskOutput tool; Claude now reads a background task's output file with the ordinary Read tool. The taskOutputMaxChars setting and the TASK_MAX_OUTPUT_LENGTH environment variable no longer have any effect. If you tuned either to control how much of a long-running task's output reached the model, that knob is gone and Read's own offset and limit arguments replace it.