eval_toolkit.metric_specs

First-party MetricSpec instances consumed by scorecard(). The namespace ships threshold-free specs only (Decision R). Each unparameterized metric is a module-level singleton; parameterized metrics (currently just the ECE family) are factory callables with LRU-cached identity.

brier	Brier-score singleton spec (mean squared error of probabilistic predictions).
ece	Factory for an ECE MetricSpec with configurable bins + strategy.
make_spec_name	Canonicalize a parameterized MetricSpec name.
pr_auc	PR-AUC singleton spec (area under the precision-recall curve).
roc_auc	ROC-AUC singleton spec (area under the receiver-operating-characteristic curve).