Noam Brand releases AI Time Estimator plugin for Claude Code

Noam Brand released AI Time Estimator, a Claude Code plugin that estimates how long a task will take in working minutes measured on the user's own machine. A read-only subagent counts operations such as file reads, edits and command runs, and estimate.py converts them into P10/P50/P90 ranges through Monte Carlo simulation, using rates calibrated from local transcripts. A Stop hook scores each estimate and corrects the ranges after 10 scored tasks. On the author's 72 held-out requests, 71% of actual times fell inside the P10–P90 range, against an 80% target. The plugin requires Python 3.9+ on the PATH and needs no pip install; the first session measures the user's rates in the background for about a minute. Brand says everything runs locally, with no network calls and nothing sent anywhere.

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