Method startServer

cli/exp_mcp.go:675–771

(ctx context.Context, inv *serpent.Invocation, instructions string, allowedTools []string)

}

func (s *mcpServer) startServer(ctx context.Context, inv *serpent.Invocation, instructions string, allowedTools []string) error {
	cliui.Infof(inv.Stderr, "Starting MCP server")

	cliui.Infof(inv.Stderr, "Instructions   : %q", instructions)
	if len(allowedTools) > 0 {
		cliui.Infof(inv.Stderr, "Allowed Tools  : %v", allowedTools)
	}

	// Capture the original stdin, stdout, and stderr.
	invStdin := inv.Stdin
	invStdout := inv.Stdout
	invStderr := inv.Stderr
	defer func() {
		inv.Stdin = invStdin
		inv.Stdout = invStdout
		inv.Stderr = invStderr
	}()

	mcpSrv := server.NewMCPServer(
		"Coder Agent",
		buildinfo.Version(),
		server.WithInstructions(instructions),
	)

	// If neither the user client nor the agent socket is available, there
	// are no tools we can enable.
	if s.client == nil && s.socketClient == nil {
		return xerrors.New(notLoggedInMessage)
	}

	// Add tool dependencies.
	toolOpts := []func(*toolsdk.Deps){
		toolsdk.WithTaskReporter(func(args toolsdk.ReportTaskArgs) error {
			state := codersdk.WorkspaceAppStatusState(args.State)
			// The agent does not reliably report idle, so when AgentAPI is
			// enabled we override idle to working and let the screen watcher
			// detect the real idle via StatusStable.  Final states (failure,
			// complete) are trusted from the agent since the screen watcher
			// cannot produce them.
			if s.aiAgentAPIClient != nil && state == codersdk.WorkspaceAppStatusStateIdle {
				state = codersdk.WorkspaceAppStatusStateWorking
			}
			return s.queue.Push(taskReport{
				link:         args.Link,
				selfReported: true,
				state:        state,
				summary:      args.Summary,
			})
		}),
	}

	toolDeps, err := toolsdk.NewDeps(s.client, toolOpts...)
	if err != nil {
		return xerrors.Errorf("failed to initialize tool dependencies: %w", err)
	}

	// Register tools based on the allowlist.  Zero length means allow everything.
	for _, tool := range toolsdk.All {