/**
 * Antigravity / agy MCP injector.
 *
 * `agy` auto-loads MCP servers declared in `~/.gemini/config/mcp_config.json`
 * — the same shape Claude Code, Gemini CLI, and many other MCP hosts use:
 *
 *   {
 *     "mcpServers": {
 *       "<name>": { "command": "...", "args": [...], "env": {...} }
 *     }
 *   }
 *
 * On adapter init we read-modify-write this file so the `agim` entry
 * is always pointed at the current approval-bus socket (which rotates
 * every agim restart — see core/approval-bus.ts:defaultSocketPath).
 * Other entries the operator already had stay untouched.
 *
 * Why a single shared config file (vs claude-code's per-spawn tmpdir):
 * agy has no `--mcp-config <path>` flag; the only way to wire MCP is
 * the global file. Concurrency-wise that's fine because the file just
 * tells agy which sidecar to launch — the sidecar itself is stateless
 * across runs (each run gets its own AGIM_RUN_ID via process env).
 */
/** Resolves to `${HOME}/.gemini/config/mcp_config.json`. Exported for tests
 *  that want to point this at a tmp dir instead of the real home. */
export declare function defaultMcpConfigPath(): string;
export interface McpServerSpec {
    command: string;
    args?: string[];
    env?: Record<string, string>;
}
/**
 * Ensure `~/.gemini/config/mcp_config.json` has the agim MCP entry
 * pointing at the current approval-bus socket. Preserves any other
 * keys / mcpServers entries the operator already configured.
 *
 * Idempotent: safe to call on every adapter init or before every spawn.
 */
export declare function ensureAgimMcp(spec: McpServerSpec, opts?: {
    path?: string;
}): Promise<void>;
/**
 * Remove the agim MCP entry. Used by tests / uninstall flows; the
 * normal adapter path just overwrites with a fresh socket.
 */
export declare function removeAgimMcp(opts?: {
    path?: string;
}): Promise<void>;
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