/** Question classes ordered by information requirement. */
export type QuestionClass = "existence" | "structure" | "signature" | "behavior";
/** Projection levels ordered by detail. */
export type ProjectionLevel = "outline" | "signature" | "content";
/** Warning when a projection is insufficient for the inferred question. */
export interface SafetyWarning {
    readonly questionClass: QuestionClass;
    readonly currentProjection: ProjectionLevel;
    readonly requiredProjection: ProjectionLevel;
    readonly message: string;
}
/** Metadata about what a projection level can answer. */
export interface SafetyClassMetadata {
    readonly projection: ProjectionLevel;
    readonly answerable: readonly QuestionClass[];
}
/**
 * Infer the question class from a tool name.
 * Defaults to "behavior" for unknown tools (conservative).
 */
export declare function getQuestionClass(toolName: string): QuestionClass;
/**
 * Check whether a projection is sufficient for the question implied
 * by a tool call. Returns null if safe, or a warning if insufficient.
 */
export declare function checkProjectionSafety(toolName: string, currentProjection: ProjectionLevel): SafetyWarning | null;
/**
 * Get metadata about what question classes a projection level can answer.
 */
export declare function getSafetyClassMetadata(projection: ProjectionLevel): SafetyClassMetadata;
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