TUI config cleanup: MCP inventory (#24265)

## Summary

The TUI `/mcp` inventory flow should reflect the app server’s MCP status
response. It was also joining those results with the TUI process’s local
`config.mcp_servers`, which can diverge once MCP state is owned by a
remote app server and cause stale local command, URL, status, or
empty-state details to render.

This change removes the local config join from the app-server-backed
inventory renderer. The TUI now renders directly from the existing
`mcpServerStatus/list` payload and treats an empty status response as
the empty MCP inventory state.

## Known limitation

The existing `mcpServerStatus/list` payload does not include
disabled-state or disabled-reason fields. To preserve the current
app-server API, this PR does not try to infer that state from
client-local config. If remote `/mcp` needs to show disabled/reason
details again, that should come from app-server-owned status data in a
follow-up.

Related to #22914, #22915, and #22916.

codex-rs/tui/src/app/background_requests.rs

@@ -529,14 +529,13 @@ impl App {
     /// Process the completed MCP inventory fetch: clear the loading spinner, then
     /// render either the full tool/resource listing or an error into chat history.
     ///
-    /// When both the local config and the app-server report zero servers, a special
-    /// "empty" cell is shown instead of the full table.
+    /// When the app-server reports zero servers, a special "empty" cell is shown
+    /// instead of the full table.
     pub(super) fn handle_mcp_inventory_result(
         &mut self,
         result: Result<Vec<McpServerStatus>, String>,
         detail: McpServerStatusDetail,
     ) {
-        let config = self.chat_widget.config_ref().clone();
         self.chat_widget.clear_mcp_inventory_loading();
         self.clear_committed_mcp_inventory_loading();
 
@@ -549,7 +548,7 @@ impl App {
             }
         };
 
-        if config.mcp_servers.get().is_empty() && statuses.is_empty() {
+        if statuses.is_empty() {
             self.chat_widget
                 .add_to_history(history_cell::empty_mcp_output());
             return;
@@ -557,7 +556,7 @@ impl App {
 
         self.chat_widget
             .add_to_history(history_cell::new_mcp_tools_output_from_statuses(
-                &config, &statuses, detail,
+                &statuses, detail,
             ));
     }
 

codex-rs/tui/src/history_cell/mcp.rs

@@ -512,14 +512,13 @@ pub(crate) fn new_mcp_tools_output(
 /// Build the `/mcp` history cell from app-server `McpServerStatus` responses.
 ///
 /// The server list comes directly from the app-server status response, sorted
-/// alphabetically. Local config is only used to enrich returned servers with
-/// transport details such as command, URL, cwd, and environment display.
+/// alphabetically. The TUI deliberately does not enrich these rows from
+/// client-local config because the app-server owns the remote MCP state.
 ///
 /// This mirrors the layout of [`new_mcp_tools_output`] but sources data from
 /// the paginated RPC response rather than the in-process `McpManager`. The
 /// `detail` flag controls whether resources and resource templates are rendered.
 pub(crate) fn new_mcp_tools_output_from_statuses(
-    config: &Config,
     statuses: &[McpServerStatus],
     detail: McpServerStatusDetail,
 ) -> PlainHistoryCell {
@@ -530,13 +529,8 @@ pub(crate) fn new_mcp_tools_output_from_statuses(
         "".into(),
     ];
 
-    let mut statuses_by_name = HashMap::new();
-    for status in statuses {
-        statuses_by_name.insert(status.name.as_str(), status);
-    }
-
-    let mut server_names: Vec<String> = statuses.iter().map(|status| status.name.clone()).collect();
-    server_names.sort();
+    let mut statuses = statuses.iter().collect::<Vec<_>>();
+    statuses.sort_by(|a, b| a.name.cmp(&b.name));
 
     let has_any_tools = statuses.iter().any(|status| !status.tools.is_empty());
     if !has_any_tools {
@@ -544,32 +538,16 @@ pub(crate) fn new_mcp_tools_output_from_statuses(
         lines.push("".into());
     }
 
-    for server in server_names {
-        let cfg = config.mcp_servers.get().get(server.as_str());
-        let status = statuses_by_name.get(server.as_str()).copied();
-        let header: Vec<Span<'static>> = vec!["  • ".into(), server.clone().into()];
+    for status in statuses {
+        let header: Vec<Span<'static>> = vec!["  • ".into(), status.name.clone().into()];
 
         lines.push(header.into());
-        if matches!(detail, McpServerStatusDetail::Full) {
-            let enabled = cfg.map(|cfg| cfg.enabled).unwrap_or(true);
-            let status_text = if enabled {
-                "enabled".green()
-            } else {
-                "disabled".red()
-            };
-            lines.push(vec!["    • Status: ".into(), status_text].into());
-            if let Some(reason) = cfg.and_then(|cfg| cfg.disabled_reason.as_ref()) {
-                lines.push(vec!["    • Reason: ".into(), reason.to_string().dim()].into());
-            }
-        }
-        let auth_status = status
-            .map(|status| match status.auth_status {
-                codex_app_server_protocol::McpAuthStatus::Unsupported => McpAuthStatus::Unsupported,
-                codex_app_server_protocol::McpAuthStatus::NotLoggedIn => McpAuthStatus::NotLoggedIn,
-                codex_app_server_protocol::McpAuthStatus::BearerToken => McpAuthStatus::BearerToken,
-                codex_app_server_protocol::McpAuthStatus::OAuth => McpAuthStatus::OAuth,
-            })
-            .unwrap_or(McpAuthStatus::Unsupported);
+        let auth_status = match status.auth_status {
+            codex_app_server_protocol::McpAuthStatus::Unsupported => McpAuthStatus::Unsupported,
+            codex_app_server_protocol::McpAuthStatus::NotLoggedIn => McpAuthStatus::NotLoggedIn,
+            codex_app_server_protocol::McpAuthStatus::BearerToken => McpAuthStatus::BearerToken,
+            codex_app_server_protocol::McpAuthStatus::OAuth => McpAuthStatus::OAuth,
+        };
         lines.push(
             vec![
                 "    • Auth: ".into(),
@@ -578,72 +556,7 @@ pub(crate) fn new_mcp_tools_output_from_statuses(
             .into(),
         );
 
-        if let Some(cfg) = cfg {
-            match &cfg.transport {
-                McpServerTransportConfig::Stdio {
-                    command,
-                    args,
-                    env,
-                    env_vars,
-                    cwd,
-                } => {
-                    let args_suffix = if args.is_empty() {
-                        String::new()
-                    } else {
-                        format!(" {}", args.join(" "))
-                    };
-                    let cmd_display = format!("{command}{args_suffix}");
-                    lines.push(vec!["    • Command: ".into(), cmd_display.into()].into());
-
-                    if let Some(cwd) = cwd.as_ref() {
-                        lines.push(
-                            vec!["    • Cwd: ".into(), cwd.display().to_string().into()].into(),
-                        );
-                    }
-
-                    let env_display = format_env_display(env.as_ref(), env_vars.as_slice());
-                    if env_display != "-" {
-                        lines.push(vec!["    • Env: ".into(), env_display.into()].into());
-                    }
-                }
-                McpServerTransportConfig::StreamableHttp {
-                    url,
-                    http_headers,
-                    env_http_headers,
-                    ..
-                } => {
-                    lines.push(vec!["    • URL: ".into(), url.clone().into()].into());
-                    if let Some(headers) = http_headers.as_ref()
-                        && !headers.is_empty()
-                    {
-                        let mut pairs: Vec<_> = headers.iter().collect();
-                        pairs.sort_by(|(a, _), (b, _)| a.cmp(b));
-                        let display = pairs
-                            .into_iter()
-                            .map(|(name, _)| format!("{name}=*****"))
-                            .collect::<Vec<_>>()
-                            .join(", ");
-                        lines.push(vec!["    • HTTP headers: ".into(), display.into()].into());
-                    }
-                    if let Some(headers) = env_http_headers.as_ref()
-                        && !headers.is_empty()
-                    {
-                        let mut pairs: Vec<_> = headers.iter().collect();
-                        pairs.sort_by(|(a, _), (b, _)| a.cmp(b));
-                        let display = pairs
-                            .into_iter()
-                            .map(|(name, var)| format!("{name}={var}"))
-                            .collect::<Vec<_>>()
-                            .join(", ");
-                        lines.push(vec!["    • Env HTTP headers: ".into(), display.into()].into());
-                    }
-                }
-            }
-        }
-
-        let mut names = status
-            .map(|status| status.tools.keys().cloned().collect::<Vec<_>>())
-            .unwrap_or_default();
+        let mut names = status.tools.keys().cloned().collect::<Vec<_>>();
         names.sort();
         if names.is_empty() {
             lines.push("    • Tools: (none)".into());
@@ -652,9 +565,7 @@ pub(crate) fn new_mcp_tools_output_from_statuses(
         }
 
         if matches!(detail, McpServerStatusDetail::Full) {
-            let server_resources = status
-                .map(|status| status.resources.clone())
-                .unwrap_or_default();
+            let server_resources = status.resources.clone();
             if server_resources.is_empty() {
                 lines.push("    • Resources: (none)".into());
             } else {
@@ -674,9 +585,7 @@ pub(crate) fn new_mcp_tools_output_from_statuses(
                 lines.push(spans.into());
             }
 
-            let server_templates = status
-                .map(|status| status.resource_templates.clone())
-                .unwrap_or_default();
+            let server_templates = status.resource_templates.clone();
             if server_templates.is_empty() {
                 lines.push("    • Resource templates: (none)".into());
             } else {

codex-rs/tui/src/history_cell/mod.rs

@@ -54,6 +54,7 @@ use codex_app_server_protocol::McpServerStatusDetail;
 use codex_app_server_protocol::ToolRequestUserInputAnswer;
 use codex_app_server_protocol::ToolRequestUserInputQuestion;
 use codex_app_server_protocol::WebSearchAction;
+#[cfg(test)]
 use codex_config::types::McpServerTransportConfig;
 #[cfg(test)]
 use codex_mcp::qualified_mcp_tool_name_prefix;
@@ -75,6 +76,7 @@ use codex_protocol::plan_tool::StepStatus;
 use codex_protocol::plan_tool::UpdatePlanArgs;
 use codex_protocol::user_input::TextElement;
 use codex_utils_absolute_path::AbsolutePathBuf;
+#[cfg(test)]
 use codex_utils_cli::format_env_display;
 use image::DynamicImage;
 use image::ImageReader;

codex-rs/tui/src/history_cell/snapshots/codex_tui__history_cell__tests__mcp_tools_output_from_statuses_renders_status_only_servers.snap

@@ -1,5 +1,5 @@
 ---
-source: tui/src/history_cell.rs
+source: tui/src/history_cell/tests.rs
 expression: rendered
 ---
 /mcp
@@ -8,5 +8,4 @@ expression: rendered
 
   • plugin_docs
     • Auth: Unsupported
-    • Command: docs-server --stdio
     • Tools: lookup

codex-rs/tui/src/history_cell/snapshots/codex_tui__history_cell__tests__mcp_tools_output_from_statuses_renders_verbose_inventory.snap

@@ -1,5 +1,5 @@
 ---
-source: tui/src/history_cell.rs
+source: tui/src/history_cell/tests.rs
 expression: rendered
 ---
 /mcp
@@ -7,9 +7,7 @@ expression: rendered
 🔌  MCP Tools
 
   • plugin_docs
-    • Status: enabled
     • Auth: Unsupported
-    • Command: docs-server --stdio
     • Tools: lookup
     • Resources: Docs (file:///docs)
     • Resource templates: Doc Template (file:///docs/{id})

codex-rs/tui/src/history_cell/tests.rs

@@ -11,7 +11,6 @@ use crate::wrapping::word_wrap_lines;
 use codex_app_server_protocol::AskForApproval;
 use codex_app_server_protocol::McpAuthStatus;
 use codex_config::types::McpServerConfig;
-use codex_config::types::McpServerDisabledReason;
 use codex_otel::RuntimeMetricTotals;
 use codex_otel::RuntimeMetricsSummary;
 use codex_protocol::ThreadId;
@@ -803,19 +802,8 @@ async fn mcp_tools_output_lists_tools_for_hyphenated_server_names() {
     insta::assert_snapshot!(rendered);
 }
 
-#[tokio::test]
-async fn mcp_tools_output_from_statuses_renders_status_only_servers() {
-    let mut config = test_config().await;
-    let mut plugin_docs =
-        stdio_server_config("docs-server", vec!["--stdio"], /*env*/ None, vec![]);
-    plugin_docs.enabled = false;
-    plugin_docs.disabled_reason = Some(McpServerDisabledReason::Unknown);
-    let servers = HashMap::from([("plugin_docs".to_string(), plugin_docs)]);
-    config
-        .mcp_servers
-        .set(servers)
-        .expect("test mcp servers should accept any configuration");
-
+#[test]
+fn mcp_tools_output_from_statuses_renders_status_only_servers() {
     let statuses = vec![McpServerStatus {
         name: "plugin_docs".to_string(),
         tools: HashMap::from([(
@@ -836,27 +824,15 @@ async fn mcp_tools_output_from_statuses_renders_status_only_servers() {
         auth_status: codex_app_server_protocol::McpAuthStatus::Unsupported,
     }];
 
-    let cell = new_mcp_tools_output_from_statuses(
-        &config,
-        &statuses,
-        McpServerStatusDetail::ToolsAndAuthOnly,
-    );
+    let cell =
+        new_mcp_tools_output_from_statuses(&statuses, McpServerStatusDetail::ToolsAndAuthOnly);
     let rendered = render_lines(&cell.display_lines(/*width*/ 120)).join("\n");
 
     insta::assert_snapshot!(rendered);
 }
 
-#[tokio::test]
-async fn mcp_tools_output_from_statuses_renders_verbose_inventory() {
-    let mut config = test_config().await;
-    let plugin_docs =
-        stdio_server_config("docs-server", vec!["--stdio"], /*env*/ None, vec![]);
-    let servers = HashMap::from([("plugin_docs".to_string(), plugin_docs)]);
-    config
-        .mcp_servers
-        .set(servers)
-        .expect("test mcp servers should accept any configuration");
-
+#[test]
+fn mcp_tools_output_from_statuses_renders_verbose_inventory() {
     let statuses = vec![McpServerStatus {
         name: "plugin_docs".to_string(),
         tools: HashMap::from([(
@@ -894,7 +870,7 @@ async fn mcp_tools_output_from_statuses_renders_verbose_inventory() {
         auth_status: codex_app_server_protocol::McpAuthStatus::Unsupported,
     }];
 
-    let cell = new_mcp_tools_output_from_statuses(&config, &statuses, McpServerStatusDetail::Full);
+    let cell = new_mcp_tools_output_from_statuses(&statuses, McpServerStatusDetail::Full);
     let rendered = render_lines(&cell.display_lines(/*width*/ 120)).join("\n");
 
     insta::assert_snapshot!(rendered);