# Schedules > MUST use when configuring schedules. - Skill: `windmill-labs/schedules` (Agent Skill) - Install (CLI): `npx skillmds@latest add windmill-labs/schedules` - Raw SKILL.md: https://api.skillmd.com/api/skills/windmill-labs/schedules/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: windmill-labs (https://skillmd.com/u/windmill-labs) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/windmill-labs/schedules --- # Windmill Schedules Schedules run scripts and flows automatically on a cron schedule. ## File Naming Schedule files use the pattern: `{path}.schedule.yaml` Example: `f/folder/daily_sync.schedule.yaml` Note: The path is derived from the filename, not stored in the file content. ## Cron Expression Format Windmill uses 6-field cron expressions (includes seconds): ``` ┌───────────── second (0-59) │ ┌───────────── minute (0-59) │ │ ┌───────────── hour (0-23) │ │ │ ┌───────────── day of month (1-31) │ │ │ │ ┌───────────── month (1-12 or jan-dec) │ │ │ │ │ ┌───────────── day of week (0-6, 0=Sunday, or sun-sat) │ │ │ │ │ │ * * * * * * ``` **Common Examples:** - `0 0 0 * * *` - Daily at midnight - `0 0 12 * * *` - Daily at noon - `0 */5 * * * *` - Every 5 minutes - `0 0 9 * * 1-5` - Weekdays at 9 AM - `0 0 0 1 * *` - First day of each month ## CLI Commands Deploying local changes to the workspace can be destructive to remote state — only suggest/run a deploy when the user explicitly asks to deploy/publish/push, not when they say "run", "try", or "test". Deploy via `git push` or `wmill sync push` depending on how the repo is wired (see the **Deploying** section in `AGENTS.wmill.md`). The commands below never mutate remote state, so they're safe to run yourself — note that `sync pull` does overwrite local files to match the remote (use `sync pull --dry-run` to only preview), while `schedule` just lists. ```bash # Push schedules to Windmill — only when the user explicitly asks to deploy wmill sync push # Pull schedules from Windmill wmill sync pull # List schedules wmill schedule ``` ## Schedule (`*.schedule.yaml`) Must be a YAML file that adheres to the following schema: ```yaml type: object properties: schedule: type: string description: Cron expression with 6 fields (seconds, minutes, hours, day of month, month, day of week). Example '0 0 12 * * *' for daily at noon timezone: type: string description: IANA timezone for the schedule (e.g., 'UTC', 'Europe/Paris', 'America/New_York') enabled: type: boolean description: Whether the schedule is currently active and will trigger jobs script_path: type: string description: Path to the script or flow to execute when triggered is_flow: type: boolean description: True if script_path points to a flow, false if it points to a script args: type: object description: The arguments to pass to the script or flow on_failure: type: string description: Path to a script or flow to run when the scheduled job fails on_failure_times: type: number description: Number of consecutive failures before the on_failure handler is triggered (default 1) on_failure_exact: type: boolean description: If true, trigger on_failure handler only on exactly N failures, not on every failure after N on_failure_extra_args: type: object description: The arguments to pass to the script or flow on_recovery: type: string description: Path to a script or flow to run when the schedule recovers after failures on_recovery_times: type: number description: Number of consecutive successes before the on_recovery handler is triggered (default 1) on_recovery_extra_args: type: object description: The arguments to pass to the script or flow on_success: type: string description: Path to a script or flow to run after each successful execution on_success_extra_args: type: object description: The arguments to pass to the script or flow ws_error_handler_muted: type: boolean description: If true, the workspace-level error handler will not be triggered for this schedule's failures retry: type: object properties: constant: type: object description: Retry with constant delay between attempts properties: attempts: type: integer description: Number of retry attempts seconds: type: integer description: Seconds to wait between retries exponential: type: object description: Retry with exponential backoff (delay doubles each time) properties: attempts: type: integer description: Number of retry attempts multiplier: type: integer description: Multiplier for exponential backoff seconds: type: integer minimum: 1 description: Initial delay in seconds random_factor: type: integer minimum: 0 maximum: 100 description: Random jitter percentage (0-100) to avoid thundering herd retry_if: $ref: '#/components/schemas/RetryIf' description: Retry configuration for failed module executions summary: type: string description: Short summary describing the purpose of this schedule description: type: string description: Detailed description of what this schedule does no_flow_overlap: type: boolean description: If true, skip this schedule's execution if the previous run is still in progress (prevents concurrent runs) tag: type: string description: Worker tag to route jobs to specific worker groups paused_until: type: string description: ISO 8601 datetime until which the schedule is paused. Schedule resumes automatically after this time cron_version: type: string description: Cron parser version. Use 'v2' for extended syntax with additional features dynamic_skip: type: string description: Path to a script that validates scheduled datetimes. Receives scheduled_for datetime and returns boolean to skip (true) or run (false) labels: type: array items: type: string draft_only: type: boolean description: 'True when this row is a per-user draft with no deployed schedule at the same path. Frontend renders a "Draft" badge. ' is_draft: type: boolean description: 'True when the authed user has a per-user draft at this path (over a deployed row or a synthesized draft-only row). Frontend appends a `*` to the displayed name. ' inherited_labels: type: array items: type: string description: 'Labels inherited from the parent folder, computed at read time. Read-only — edit them on the folder. ' required: - schedule - script_path - timezone - is_flow - enabled ```