export interface A2AToolResultSummary {
    tool: string;
    result: string;
    isError?: boolean;
    completedSideEffect?: boolean;
}
export interface A2AArtifactResponseOptions {
    baseUrl?: string;
    includeReferencedArtifacts?: boolean;
    includePersistedArtifactMarker?: boolean;
    persistedArtifactSecret?: string;
}
export interface GuardedA2AArtifactResponse {
    text: string;
    rejectedUnverifiedArtifactReferences: boolean;
}
export interface A2AArtifactIdentityOptions {
    persistedArtifactSecrets?: readonly string[];
}
export interface A2AArtifactIdentity {
    resourceType: "document" | "deck" | "dashboard" | "analysis" | "image" | "design" | "monitor" | "form";
    id: string;
    sourceAction: string;
    titleAtAction?: string;
    url?: string;
}
export declare function stripA2APersistedArtifactMarkers(text: string): string;
/**
 * Extract a compact, verified identity ledger from successful artifact tools.
 * The ledger deliberately excludes raw tool results so it is safe to retain in
 * long-lived thread context and stable even when a resource is later renamed.
 */
export declare function extractA2AArtifactIdentities(results: A2AToolResultSummary[], options?: A2AArtifactIdentityOptions): A2AArtifactIdentity[];
export declare function guardA2AArtifactResponse(responseText: string, toolResults: A2AToolResultSummary[], options?: A2AArtifactResponseOptions): GuardedA2AArtifactResponse;
export declare function appendA2AArtifactLinks(responseText: string, toolResults: A2AToolResultSummary[], options?: A2AArtifactResponseOptions): string;
export declare function buildA2ARecoverableArtifactMessage(toolResults: A2AToolResultSummary[], options?: A2AArtifactResponseOptions): string | null;
/**
 * Build a bounded participant-facing receipt from authenticated artifact writes.
 * Unlike generic artifact recovery, this only trusts identities extracted from
 * successful write actions (or a signed downstream write ledger), so a read or
 * an unverified URL cannot be rounded up to a successful mutation.
 */
export declare function buildA2AVerifiedMutationReceipt(toolResults: A2AToolResultSummary[], options?: A2AArtifactResponseOptions): string | null;
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