import type { TSchema } from "typebox";
/**
 * Fraction of a free-text field's declared `maxLength` to project into
 * the wire schema — leaving headroom below the true cap so the model's
 * tendency to overshoot lands under the real limit rather than past it.
 *
 * ponytail: tunable heuristic knob. Lower it (e.g. 0.85, 0.8) if
 * truncation still surfaces in practice; raise it toward 1.0 if the
 * steering is clipping legitimately long values. A plain constant on
 * purpose — not an env var or config object.
 */
export declare const SHRINK = 0.9;
/**
 * Project a TypeBox String node into the wire-schema String object,
 * applying free-text length steering.
 *
 * - A free-text String with a `maxLength` gets a shrunk `maxLength` and
 *   a `description` ending `…at most <shrunk> characters`.
 * - An exact-value String (declares a `format`, or a very small
 *   `maxLength`) keeps its original `maxLength`/`description` and gets
 *   no hint.
 * - A String with no `maxLength` is returned as a bare
 *   `{ type: "string" }` (no shrink, no hint).
 *
 * Returns a plain object literal (the loose shape both converters
 * round-trip through the request body), never mutating the source.
 */
export declare function projectStringLengthHint(schema: TSchema): Record<string, unknown>;
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