codex_async
Launch a task, get a taskid immediately (fan-out). Not fire-and-forget: results come back only via codexwait. Pass threadId to resume a session
How to use it
codex_async is exposed by the Codex MCP Swarm MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the codex_async tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
FULL CODEX MCP SWARM LISTINGOther tools in Codex MCP Swarm (5)
Synchronous execution (drop-in replacement for official)
Kill a running async task (preserves worktree for inspection)
Continue a previous session via codex exec resume
Live view: tools called, last command, current thinking
Block until multiple tasks complete, return all results