Codex App Threads

The tools are codex_app__* (for example codex_app__create_thread). Use these exact shapes.

Do NOT prefix them with mcp__codex_apps__ — that is a different set of MCP servers (github, linear, notion) that exist in your tool list; the thread tools are codex_app__ only.

Create a thread

create_thread requires TWO fields: prompt (string) and target (object).