/**
 * Claude Code inference-fingerprint constants, kept in a leaf module so consumers
 * outside the provider (`registry/oauth/anthropic`, `usage/claude`) don't
 * import the heavy `providers/anthropic` module.
 *
 * That import edge was a live init cycle: `providers/anthropic` → `stream` →
 * `registry` → `registry/oauth/anthropic` → back into the still-initializing
 * provider module.
 */
/**
 * Pinned Claude Code CLI version: the offline fallback for {@link getClaudeCodeVersion}.
 * Bumped to the latest npm release by `bun run check-spoofed-versions --update`.
 */
export declare const DEFAULT_CLAUDE_CODE_VERSION = "2.1.280";
/** `@anthropic-ai/sdk` version bundled by the current Claude Code release. */
export declare const claudeCodeSdkVersion = "0.112.1";
/**
 * Claude Code CLI version represented on the Anthropic wire (User-Agent, billing
 * header): `PI_AI_CLAUDE_CODE_VERSION` → version adopted from a server rejection
 * (see {@link adoptRequiredClaudeCodeVersion}) → {@link DEFAULT_CLAUDE_CODE_VERSION}.
 */
export declare function getClaudeCodeVersion(): string;
/** User-Agent emitted by Claude Code's CLI inference entrypoint. */
export declare function getClaudeCodeUserAgent(): string;
/**
 * Adopts the minimum version named by an Anthropic `claude_code_version_too_old`
 * rejection for the rest of the process, so the pinned fallback going stale costs
 * one rejected request instead of a hard failure.
 *
 * Returns true only when the wire version actually increased — callers retry on
 * true, so a repeated rejection at the same version cannot loop. Always false
 * while `PI_AI_CLAUDE_CODE_VERSION` pins the version explicitly.
 */
export declare function adoptRequiredClaudeCodeVersion(error: unknown): boolean;
/** Prefix used to isolate custom Anthropic OAuth tools from built-in tools. */
export declare const claudeToolPrefix: string;
/** Identity block prepended by Claude Code's CLI runtime. */
export declare const claudeCodeSystemInstruction = "You are Claude Code, Anthropic's official CLI for Claude.";