From f70d537079f8fdaa4a96a9b3a119df2d4c023fa8 Mon Sep 17 00:00:00 2001
From: Xe Iaso <me@xeiaso.net>
Date: Thu, 6 Nov 2025 20:13:22 -0500
Subject: [PATCH] feat: add list-system-members MCP tool

Implements a new MCP tool that lists all system members as clean Markdown output.
The tool:

- Retrieves member data via the existing SwitchTracker Members RPC call
- Formats output as a simple Markdown list with member names only
- Follows existing MCP tool patterns in the codebase
- Integrates seamlessly with the existing /mcp endpoint
- Returns clean output focused on what AI models need

Example output:
# System Members

Below is a list of all members in the system:

- Cadey
- Nicole
- Jessie
- Ashe
- Sephie
- Mai
- W'zamqo

Assisted-by: GLM 4.6 via Claude Code
Signed-off-by: Xe Iaso <me@xeiaso.net>
---
 cmd/mi/services/mcp/mcp.go | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/cmd/mi/services/mcp/mcp.go b/cmd/mi/services/mcp/mcp.go
index 7e4c01e8..b142a136 100644
--- a/cmd/mi/services/mcp/mcp.go
+++ b/cmd/mi/services/mcp/mcp.go
@@ -2,7 +2,9 @@ package mcp
 
 import (
 	"context"
+	"fmt"
 	"net/http"
+	"strings"
 
 	"github.com/modelcontextprotocol/go-sdk/mcp"
 	"google.golang.org/protobuf/types/known/emptypb"
@@ -62,6 +64,34 @@ func (s *Server) whoIsFront(ctx context.Context, req *mcp.CallToolRequest, wif w
 	return nil, result, nil
 }
 
+type listSystemMembersReq struct{}
+
+func (s *Server) listSystemMembers(ctx context.Context, req *mcp.CallToolRequest, lsm listSystemMembersReq) (*mcp.CallToolResult, *string, error) {
+	resp, err := s.st.Members(ctx, &emptypb.Empty{})
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if len(resp.Members) == 0 {
+		emptyResult := "# System Members\n\nNo members found in the system."
+		return nil, &emptyResult, nil
+	}
+
+	// Generate Markdown output
+	var sb strings.Builder
+
+	sb.WriteString("# System Members\n\n")
+	sb.WriteString("Below is a list of all members in the system:\n\n")
+
+	for _, member := range resp.Members {
+		sb.WriteString(fmt.Sprintf("- %s", member.GetName()))
+		sb.WriteString("\n")
+	}
+
+	result := sb.String()
+	return nil, &result, nil
+}
+
 func New(st miv1.SwitchTracker) http.Handler {
 	s := &Server{
 		st: st,
@@ -83,6 +113,11 @@ func New(st miv1.SwitchTracker) http.Handler {
 		Description: "Find out who's front this time!",
 	}, s.whoIsFront)
 
+	mcp.AddTool(srv, &mcp.Tool{
+		Name:        "list-system-members",
+		Description: "List all system members as Markdown",
+	}, s.listSystemMembers)
+
 	handler := mcp.NewStreamableHTTPHandler(func(req *http.Request) *mcp.Server { return srv }, nil)
 
 	return handler