export declare const WEBCHAT_CHANNEL_SERVER_NAME = "webchat-channel";
/** Task 756 — the single tool a ringfenced public webchat session is allowed.
 *  Under dontAsk (fail-closed) the spawn's `--allowed-tools` must name it, or
 *  the agent cannot reply; nothing else is exposed. */
export declare const WEBCHAT_CHANNEL_REPLY_TOOL = "mcp__webchat-channel__reply";
export interface WebchatChannelMcpParams {
    sessionId: string;
    /** The webchat conversation key this session serves. */
    key: string;
    /** Loopback base URL of the gateway in the UI process. */
    gatewayUrl: string;
    /** Absolute path to the built channel server entrypoint (dist/server.js). */
    serverPath: string;
    /** Absolute path to the node binary that runs the channel server. On darwin
     *  the launchd server PATH excludes an nvm node, so a bare `node` command
     *  fails to spawn and the channel never boots (Task 1402); callers pass the
     *  installer-resolved NODE_BIN. */
    nodeBin: string;
    /** Task 756 — 'public' frames the channel server's instructions + reply-tool
     *  copy for an anonymous visitor; omitted/'admin' keeps the operator framing
     *  (Task 772). Carried to the server as WEBCHAT_CHANNEL_ROLE. */
    role?: 'admin' | 'public';
}
export interface WebchatChannelMcpServerEntry {
    command: string;
    args: string[];
    env: Record<string, string>;
}
export declare function buildWebchatChannelMcpServers(p: WebchatChannelMcpParams): Record<string, WebchatChannelMcpServerEntry>;
/** Argv that activates the channel server as a development channel. */
export declare function webchatChannelDevChannelsArgv(): string[];
/** Per-session mcp-config file path. The sessionId is sanitised to the
 *  filename-safe charset so a hostile/odd id can't escape `dir`. Pure — the
 *  caller writes the file. Shared by the gateway and resume paths so both
 *  produce the identical path. */
export declare function webchatChannelMcpConfigPath(sessionId: string, dir: string): string;
/** Full argv fragment that attaches + activates the channel server: the
 *  per-session `--mcp-config` followed by the development-channels flag. */
export declare function buildWebchatChannelArgv(mcpConfigPath: string): string[];
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