Class StdioMcpClient

java.lang.Object

com.shaft.commandline.mcp.AbstractMcpClient

com.shaft.commandline.mcp.StdioMcpClient

All Implemented Interfaces:

McpClient, AutoCloseable

public final class StdioMcpClient
extends AbstractMcpClient

MCP client speaking newline-delimited JSON-RPC over a child process's stdio (one-shot mode). The server's stdout carries only JSON-RPC messages; its stderr (logs) is drained separately to avoid the classic pipe-buffer deadlock.

Constructor Summary

Constructors

Constructor	Description
StdioMcpClient(InputStream serverStdout, OutputStream serverStdin)	Wraps an already-connected pair of streams.

Method Summary

Modifier and Type	Method	Description
void	close()
static StdioMcpClient	spawn(List<String> command)	Spawns a shaft-mcp stdio child from the given command and connects to it.

Methods inherited from class AbstractMcpClient

callTool, callToolRaw, initialize, listTools, listTools, listToolsRaw, listToolsRaw

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

StdioMcpClient

public StdioMcpClient(InputStream serverStdout,
 OutputStream serverStdin)

Wraps an already-connected pair of streams. Used for in-process testing.

Parameters:

serverStdout - the stream carrying the server's JSON-RPC output

serverStdin - the stream to write JSON-RPC requests to

Method Details

spawn

public static StdioMcpClient spawn(List<String> command)

Spawns a shaft-mcp stdio child from the given command and connects to it. The child's stderr is redirected away from this process so log output cannot block the protocol channel.

Parameters:

command - the process command (e.g. [java, @shaft-mcp.args])

Returns:

a connected client owning the child process

close

public void close()