Files
codex/codex-rs/app-server/tests/suite/v2/mod.rs
T
jif c8c78b63a7 Activate selected executor plugin MCPs in app-server (#27893)
## Why

#27870 teaches the MCP extension how to discover stdio MCP servers
declared by a selected executor plugin, but app-server does not yet
install that contributor or initialize its per-thread state. As a
result, `thread/start.selectedCapabilityRoots` can select the plugin
while its MCP servers remain inactive.

This PR closes that app-server wiring gap:

```text
thread/start(selectedCapabilityRoots)
    -> initialize the thread's selected-plugin MCP snapshot
    -> read the selected plugin's .mcp.json through its environment
    -> start declared stdio servers in that environment
    -> expose their tools only on the selected thread
```

## What changed

- Install the selected-executor-plugin MCP contributor in app-server
using the existing shared `EnvironmentManager`.
- Initialize its frozen thread snapshot when `thread/start` includes
selected capability roots.
- Document that selected plugin stdio MCPs are activated in their owning
environment.
- Add an app-server E2E covering the complete selection-to-tool-call
path.

The E2E verifies that:

- the selected MCP process receives an executor-only environment value,
proving the tool runs through the selected environment;
- the MCP tool is advertised to the model and can be called;
- a normal MCP config reload does not discard the thread's frozen
selected-plugin registration;
- another thread without the selected root does not see the MCP server.

## Scope

- Existing sessions without `selectedCapabilityRoots` are unchanged.
- Only stdio MCP declarations are activated. HTTP declarations remain
inactive.
- This does not change selected-root persistence across resume/fork or
add hosted-plugin behavior.

## Verification

- Focused app-server E2E:
`selected_executor_plugin_exposes_its_stdio_mcp_only_to_that_thread`

## Stack

Stacked on #27870.
2026-06-15 16:23:37 +02:00

78 lines
1.6 KiB
Rust

mod account;
mod analytics;
mod app_list;
mod attestation;
mod client_metadata;
mod collaboration_mode_list;
#[cfg(unix)]
mod command_exec;
mod compaction;
mod config_rpc;
mod connection_handling_websocket;
#[cfg(unix)]
mod connection_handling_websocket_unix;
mod dynamic_tools;
#[cfg(not(target_os = "windows"))]
mod executor_mcp;
mod executor_skills;
mod experimental_api;
mod experimental_feature_list;
mod external_agent_config;
mod fs;
mod hooks_list;
mod imagegen_extension;
mod initialize;
mod marketplace_add;
mod marketplace_remove;
mod marketplace_upgrade;
mod mcp_resource;
mod mcp_server_elicitation;
mod mcp_server_status;
mod mcp_tool;
mod memory_reset;
mod model_list;
mod model_provider_capabilities_read;
mod output_schema;
mod permission_profile_list;
mod plan_item;
mod plugin_install;
mod plugin_list;
mod plugin_read;
mod plugin_share;
mod plugin_uninstall;
mod process_exec;
mod rate_limits;
mod realtime_conversation;
mod remote_control;
#[cfg(debug_assertions)]
mod remote_thread_store;
mod request_permissions;
mod request_user_input;
mod review;
mod safety_check_downgrade;
mod skills_list;
mod thread_archive;
mod thread_delete;
mod thread_fork;
mod thread_inject_items;
mod thread_list;
mod thread_loaded_list;
mod thread_memory_mode_set;
mod thread_metadata_update;
mod thread_name_websocket;
mod thread_read;
mod thread_resume;
mod thread_rollback;
mod thread_settings_update;
mod thread_shell_command;
mod thread_start;
mod thread_status;
mod thread_unarchive;
mod thread_unsubscribe;
mod turn_interrupt;
mod turn_start;
mod turn_start_zsh_fork;
mod turn_steer;
mod web_search;
mod windows_sandbox_setup;