Selection and ranking

A context_selection explains how candidate context became selected or omitted context.

Ranking signals

Common signals include relevance, recency, authority, user_pin, policy_allow, freshness, coverage, dedupe_score, token_cost, sensitivity, tool_visibility, and runtime_need.

Omission reasons

Initial omission reasons: budget_limit, low_relevance, duplicate, stale, policy_blocked, permission_missing, unsupported_media, too_large, sensitive, superseded_by_summary, not_visible_to_target, and custom.

Fixed rule

If an omitted item would reasonably change the answer, the selection should either record a high-impact omission or create a missing_context record.