Step through a simulation agent replay to find where and why it failed — timeout, invalid move, crash, or strategic collapse. Use when the user says "debug the agent", "why did it lose", "find the failing turn", "analyze the replay", or after a regression in local eval.
Structured EDA audit for tabular competitions — target distribution, missing values, leakage scan, class imbalance, feature types, outliers, train/test shift. Use when the user says "do EDA", "audit the data", "explore the dataset", "check for leakage", or when starting a new tabular competition.
Blend multiple Kaggle submission CSVs via weighted average (regression) or rank average (classification/ranking). Use when the user says "blend submissions", "ensemble these CSVs", "rank average", "weighted blend", or "combine my models".
Capture a single learning to .learnings/ when something surprising, painful, or validation-worthy happens during Kaggle work. Use proactively whenever an experiment fails for a non-obvious reason, a submission regresses, you hit a tool/API quirk, or a non-obvious approach is confirmed to work. Also use when the user says "remember this", "save this learning", "log this", or describes a mistake they don't want repeated.
Use when asked to improve, iterate, or build a better version of an existing Kaggle simulation/agent competition bot. Triggers on "improve the agent", "make a better version", "vN", "iterate on agent", "what should we try next", or any request to advance beyond the current best submission.
Pull the current Kaggle leaderboard for a competition and compare against the user's best score. Use when the user says "leaderboard", "how are we doing", "score vs top", or "where do we rank".
Record a scientific-method entry for an experiment — hypothesis, setup, outcome, lesson. Use before running any non-trivial experiment (new feature, new model, new CV strategy, new agent tactic) so the hypothesis is written down BEFORE the result. Also use when the user says "log experiment", "track this test", or "record the hypothesis".
Scaffold a new Kaggle competition subfolder under competitions/<slug>/ with CLAUDE.md, README, gitignore, submission log, and standard subdirs. Use when the user says "new competition", "start <slug>", "scaffold <slug>", or provides a Kaggle competition URL.