export interface NormalizedToolIdentity {
    /** Source-neutral name consumed by assertions and aggregate reports. */
    name: string;
    /** Runtime-native name, retained when normalization changes it. */
    sourceName?: string;
    namespace?: string;
    provider?: string;
    displayName?: string;
}
export interface ToolIdentityInput {
    sourceName: string;
    namespace?: string;
    provider?: string;
    /** Runtime-authoritative leaf name, such as an MCP end event's tool. */
    authoritativeName?: string;
}
/**
 * Normalize runtime-specific tool labels into one comparison namespace while
 * retaining source identity for audit and future protocol migrations.
 */
export declare function normalizeToolIdentity(input: ToolIdentityInput): NormalizedToolIdentity;