/** The serialized form of a failed tool call. `nextActions` are tool calls or commands, in
 *  the order worth trying; absent when the failure class is unrecognized (never invented). */
export interface ErrorEnvelope {
    error: string;
    hint?: string;
    nextActions?: string[];
}
/** A known failure class and the way out of it. */
export interface RecoveryRule {
    re: RegExp;
    hint?: string;
    nextActions: string[];
}
/**
 * Known failure classes → what to do about them. Every dotted `avcs.*` name here must be a
 * REGISTERED tool — a hint pointing at a tool that does not exist is worse than prose,
 * because the agent follows it and fails. A test pins this against the live tool list.
 */
export declare const RECOVERY: RecoveryRule[];
/**
 * Normalize a caller-supplied limit against a default (Phase 16 M1.2). A missing, negative,
 * zero, or non-finite value falls back to the default rather than returning nothing or
 * everything — an unbounded read is the failure mode this layer exists to prevent.
 */
export declare function boundedLimit(raw: unknown, fallback: number): number;
/** Serialize a successful tool result. Compact unless a human asked for readability. */
export declare function serializeResult(result: unknown, opts?: {
    verbose?: boolean;
}): string;
/** Translate a thrown value into the failure envelope the transport sends. */
export declare function errorEnvelope(e: unknown): ErrorEnvelope;
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