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Evidence is information tied to a specific skill revision and behavior. Health is SelfTune’s current summary of that evidence. Evidence may come from observed agent sessions, routing examples, execution evaluations, replay, baselines, or post-change monitoring. These sources answer different questions and should not be treated as interchangeable.

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Health is contextual

A health conclusion depends on the skill revision, harness, time window, sample coverage, and evaluation conditions. SelfTune should report uncertainty when those inputs are missing or not comparable. An unknown or no-data state means “there is not enough evidence.” It does not mean the skill failed.

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Evidence before change

An improvement should cite the evidence it addresses and reuse comparable conditions when evaluating the candidate. After a change, new observations can confirm the result or reveal a regression. See Understand skill health for the practical workflow.