export type FederationMessageType = 'task-assignment' | 'memory-query' | 'memory-response' | 'context-share' | 'status-broadcast' | 'trust-change' | 'topology-change' | 'agent-spawn' | 'heartbeat' | 'challenge' | 'challenge-response' | 'handshake-init' | 'handshake-accept' | 'handshake-reject' | 'session-terminate' | 'claim-event' | 'agent-handoff';
export type PIIScanAction = 'pass' | 'redact' | 'hash' | 'block';
export interface PIIScanResult {
    readonly scanned: boolean;
    readonly piiFound: boolean;
    readonly detections: readonly PIIScanDetection[];
    readonly actionsApplied: readonly PIIScanAction[];
    readonly scanDurationMs: number;
}
export interface PIIScanDetection {
    readonly type: string;
    readonly action: PIIScanAction;
    readonly confidence: number;
}
export interface FederationEnvelopeProps<T = unknown> {
    readonly envelopeId: string;
    readonly sourceNodeId: string;
    readonly targetNodeId: string;
    readonly sessionId: string;
    readonly messageType: FederationMessageType;
    readonly payload: T;
    readonly timestamp: Date;
    readonly nonce: string;
    readonly hmacSignature: string;
    readonly piiScanResult: PIIScanResult;
}
export declare class FederationEnvelope<T = unknown> {
    readonly envelopeId: string;
    readonly sourceNodeId: string;
    readonly targetNodeId: string;
    readonly sessionId: string;
    readonly messageType: FederationMessageType;
    readonly payload: T;
    readonly timestamp: Date;
    readonly nonce: string;
    readonly hmacSignature: string;
    readonly piiScanResult: PIIScanResult;
    constructor(props: FederationEnvelopeProps<T>);
    isExpired(maxAgeMs: number): boolean;
    toJSON(): Record<string, unknown>;
    toSignablePayload(): string;
    static emptyScanResult(): PIIScanResult;
}
export declare const CONSENSUS_REQUIRED_TYPES: ReadonlySet<FederationMessageType>;
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