/**
 * Runtime type guards for safe narrowing at API boundaries.
 * Use these instead of `as Record<string, unknown>` when the source is external (API responses, user input).
 */
/** Narrow `unknown` to `Record<string, unknown>` with a runtime check. */
export declare function isRecord(value: unknown): value is Record<string, unknown>;
/** Safely access a nested record field, returning undefined if the path is not a record. */
export declare function asRecord(value: unknown): Record<string, unknown> | undefined;
/** Safely coerce to string, returning undefined for non-strings. */
export declare function asString(value: unknown): string | undefined;
/** Safely coerce to number, returning undefined for non-numbers. */
export declare function asNumber(value: unknown): number | undefined;
/** Narrow `unknown` to `FormData` with a runtime check (guards against environments where FormData is not defined). */
export declare function isFormDataBody(body: unknown): body is FormData;
/**
 * Coerce a value to a Record.  LLMs sometimes serialize nested objects as JSON
 * strings (e.g. `params: '{"artifact_id":"..."}' `) instead of actual objects.
 * This helper transparently parses JSON strings into records so downstream code
 * can always treat them uniformly.
 */
export declare function coerceRecord(value: unknown): Record<string, unknown> | undefined;
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