#!/usr/bin/env node
/**
 * Serve MCP over stdio, until the client disconnects.
 *
 * Exported because there are two ways in and they must be the same program.
 * `crossline-mcp` is the binary the README documents; `crossline mcp` is the
 * subcommand, and it exists because the MCP registry builds its launch line as
 * `<runtime> <runtimeArguments…> <identifier>@<version> <packageArguments…>` —
 * a shape with nowhere to put `npx -y -p crossline crossline-mcp`. A registry
 * entry can only reach a subcommand, so `server.json` names one. Both callers
 * land here rather than on two copies that drift.
 *
 * Nothing but JSON-RPC may ever reach stdout on this path: a single stray
 * `console.log` upstream of the transport corrupts the stream and the agent
 * sees a parse error instead of a tool.
 */
export declare function startMcpServer(): Promise<void>;