import { type MCPResponse } from "../handlers/shared/responseTrimmer";
/**
 * An argument that shows the call is on the previous contract.
 * `present`: the current schema does not accept this path.
 * `string`: the input stayed, and a string is the previous contract (it is a list now).
 */
export interface ContractTrigger {
    path: string;
    when: "present" | "string";
}
/** A breaking change to a tool that kept its name (ADR 0011). */
export interface ContractChange {
    /** The last release that had the previous contract. */
    lastRelease: string;
    triggers: readonly ContractTrigger[];
    /** What the caller reads: how the old inputs map, and what the result no longer contains. */
    message: string;
}
/**
 * A tool that kept its name. A call that matches a trigger gets `message` and does not run.
 * Retiring the tool deletes its entry.
 */
export declare const CONTRACT_CHANGES: ReadonlyMap<string, ContractChange>;
export interface ContractMatch {
    lastRelease: string;
    inputs: readonly string[];
    result: MCPResponse;
}
/** The error for a call on a tool's previous contract, or nothing when the call is on the current one. */
export declare function contractChangeFor(name: string, args: unknown): ContractMatch | undefined;
//# sourceMappingURL=contractChanges.d.ts.map