import type { OAuthClientInformationFull } from '@modelcontextprotocol/sdk/shared/auth.js';
export declare const CLIENT_ID_DYNAMIC_PREFIX = "mcp-client-";
export declare const CLIENT_STORE_DEFAULTS: {
    readonly maxClients: 1000;
    readonly maxRedirectUris: 10;
    readonly maxRedirectUriLength: 256;
    readonly idleGraceMs: 0;
};
export declare const CLIENT_STORE_ENV: {
    readonly maxClients: "MCP4_OAUTH_CLIENT_STORE_MAX_CLIENTS";
    readonly maxRedirectUris: "MCP4_OAUTH_CLIENT_STORE_MAX_REDIRECT_URIS";
    readonly maxRedirectUriLength: "MCP4_OAUTH_CLIENT_STORE_MAX_REDIRECT_URI_LENGTH";
    readonly idleGraceMs: "MCP4_OAUTH_CLIENT_STORE_IDLE_GRACE_MS";
};
export type OAuthClientStoreClientKind = 'dynamic' | 'static';
export interface InMemoryClientsStoreOptions {
    maxClients?: number;
    maxRedirectUris?: number;
    maxRedirectUriLength?: number;
    idleGraceMs?: number;
}
export interface ClientStoreLimits {
    maxClients: number;
    maxRedirectUris: number;
    maxRedirectUriLength: number;
    idleGraceMs: number;
}
export interface OAuthClientRuntimeMeta {
    clientId: string;
    kind: OAuthClientStoreClientKind;
    createdAt: number;
    lastUsedAt?: number;
    activeSessionCount: number;
    pendingStateCount: number;
    pendingAuthCodeCount: number;
}
export interface EvictionCandidateRecord {
    clientId: string;
    kind: OAuthClientStoreClientKind;
    createdAt: number;
    lastUsedAt?: number;
    activeSessionCount: number;
    pendingStateCount: number;
    pendingAuthCodeCount: number;
    isIdle: boolean;
    isNeverUsed: boolean;
    ageMs: number;
}
export type EvictionTierId = 'tier_a_dynamic_idle_never_used' | 'tier_b_dynamic_idle' | 'tier_c_any_idle';
export interface EvictionDecisionEvict {
    decision: 'evict';
    clientId: string;
    tier: EvictionTierId;
}
export interface EvictionDecisionNoCandidate {
    decision: 'no_candidate';
    reason: 'no_idle_candidates';
}
export type EvictionDecision = EvictionDecisionEvict | EvictionDecisionNoCandidate;
export interface OAuthClientStoreStats {
    totalClients: number;
    dynamicClients: number;
    staticClients: number;
    activeSessionClients: number;
    pendingStateClients: number;
    pendingAuthCodeClients: number;
    idleClients: number;
}
export interface StoredOAuthClient {
    client: OAuthClientInformationFull;
    meta: OAuthClientRuntimeMeta;
}
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