import type { H2AAgentVersion } from "@sentropic/h2a";
/**
 * Read the `version` stamp from the installed h2a skill for `host`, best-effort.
 * Accepts both YAML frontmatter (`version: x`, SKILL.md) and TOML (`version = "x"`,
 * gemini command file). Returns undefined for an unknown host, a missing/unreadable
 * file, or a skill with no version stamp.
 */
export declare function readInstalledSkillVersion(host: string, home?: string): string | undefined;
/**
 * Compose the deployed-version stamp for a session: the running CLI version and
 * (when a host is known) its installed skill version. Fields are omitted rather
 * than set to undefined so the presence record stays clean.
 */
export declare function agentVersion(host?: string, home?: string): H2AAgentVersion;
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