import type { ModelInfo } from "./types.js";
export declare const CLAUDE_EFFORT_LEVELS: string[];
export declare const CLAUDE_ALIAS_IDS: readonly ["opus", "sonnet", "fable"];
export interface ClaudeModelDiscovery {
    defaultModel?: string;
    models: ModelInfo[];
}
type FetchLike = (input: string, init?: Record<string, unknown>) => Promise<{
    ok: boolean;
    status: number;
    statusText: string;
    json(): Promise<unknown>;
}>;
export declare function normalizeClaudeEffortLevels(levels: readonly string[] | undefined): string[];
export declare function knownClaudeModels(pinned?: string, effortLevels?: readonly string[]): ClaudeModelDiscovery;
export declare function parseAnthropicModels(payload: unknown, options?: {
    effortLevels?: readonly string[];
}): ClaudeModelDiscovery;
export declare function claudeFallbackCandidates(models: ModelInfo[], failedModel: string | undefined): string[];
export declare function parseClaudeEffortLevels(helpText: string): string[];
export declare function discoverClaudeEffortLevels(bin: string): Promise<string[]>;
/**
 * Parse an unexpired access token out of a Claude Code credentials blob. The
 * same JSON shape is stored in the macOS Keychain and in the plaintext
 * credentials file, so both sources share this parser.
 */
export declare function claudeTokenFromCredentialsJson(raw: string): string | undefined;
export interface ReadClaudeOAuthTokenOptions {
    home?: string;
    /** Overridable so tests can exercise the darwin branch on any host. */
    platform?: NodeJS.Platform;
    /** Overridable so tests never shell out to the real Keychain. */
    readKeychain?: () => Promise<string | undefined>;
}
/**
 * Resolve the Claude Code OAuth token, in precedence order:
 *   1. $CLAUDE_CODE_OAUTH_TOKEN
 *   2. the macOS login Keychain (where Claude Code stores credentials on darwin)
 *   3. the plaintext ~/.claude/.credentials.json (Linux, and older installs)
 *
 * Step 2 is why this is async. Omitting it made every Claude model discovery
 * return zero models on a stock macOS install — Claude Code does not write the
 * credentials file there — which silently degraded the model catalog to the
 * hardcoded "<Name> (Latest)" offline labels. This is the single reader for
 * the whole codebase; engine-limits.ts previously kept a second, divergent copy.
 */
export declare function readClaudeOAuthToken(options?: ReadClaudeOAuthTokenOptions): Promise<string | undefined>;
export declare function discoverClaudeModels(options?: {
    token?: string;
    fetchImpl?: FetchLike;
    endpoint?: string;
    effortLevels?: readonly string[];
}): Promise<ClaudeModelDiscovery>;
export {};
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