/** The Claude Code plugin hint protocol marker. */
export declare const SHOPIFY_AI_TOOLKIT_PLUGIN_HINT = "<claude-code-hint v=\"1\" type=\"plugin\" value=\"shopify-ai-toolkit@claude-plugins-official\" />";
/**
 * Returns whether this process was launched by Claude Code.
 *
 * @param environment - Environment variables to inspect.
 * @returns Whether Claude Code environment markers are truthy.
 */
export declare function runningUnderClaudeCode(environment?: NodeJS.ProcessEnv): boolean;
/**
 * Emits the Claude Code plugin hint on every command invocation under Claude Code.
 * Claude Code handles deduplication and persistence.
 *
 * @param environment - Environment variables to inspect.
 */
export declare function emitClaudeCodePluginHint(environment?: NodeJS.ProcessEnv): void;