What
CronCreate is the tool Claude uses to schedule a task to run later. Its description was rewritten in this release in the agent prompt, the set of instructions Claude Code sends when Claude is running as an agent. The description still explains that one-time durable tasks missed while Claude Code was closed are brought up for catch-up.
Why
The tool description is what Claude reads to decide how to schedule work, so rewording it can change how Claude sets up scheduled tasks in this mode.
Names in the bundleCronCreate
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Confirmed since
Anthropic's documentation has since written up CronCreate, on Use the mods API.
| [`$.tool.call`](/docs/en/plugins/mods/reference#mods-api-methods) of Bash with `run_in_background: true`, Monitor, or CronCreate | Resolves with `{ deny: '<tool> was not run: it starts background work, a schedule or a goal, and <reason>'…plugins/mods/api see the edit
Added since
A small documentation edit on Error reference touched a line naming CronCreate after this was published.
* For a tool that [background subagents drop](/docs/en/sub-agents#available-tools), such as `CronCreate`, remove the entryerrors see the edit
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agrees
A small documentation edit on Error reference touched a line naming CronCreate after this was published.