import type { CodexAppAdditionalContextEntry, CodexAppTurnInput } from '../types.js';
/** Codex currently caps each additionalContext value at roughly 1k tokens.
 * A byte ceiling is conservative across ASCII, CJK, emoji, and arbitrary
 * Unicode because a token cannot encode fewer than one input byte. */
export declare const CODEX_APP_CONTEXT_CHUNK_BYTES = 900;
export declare function chunkCodexAppContext(value: string): string[];
export declare function addCodexAppContext(target: Record<string, CodexAppAdditionalContextEntry>, key: string, value: string, kind: CodexAppAdditionalContextEntry['kind']): void;
export declare function withCodexAppContext(input: CodexAppTurnInput, key: string, value: string, kind: CodexAppAdditionalContextEntry['kind']): CodexAppTurnInput;
//# sourceMappingURL=codex-app-context.d.ts.map