Visual Builder

The Visual Builder lets you create gate functions by selecting conditions and actions from dropdown menus. No coding required -- just pick event properties, choose operators, set values, and define what happens when conditions match.

How It Works

The Visual Builder generates a gate function from three components:

1. Conditions -- Rules that evaluate event properties (e.g., "Title contains meeting")
2. Combinator -- How multiple conditions are joined: AND (all must match) or OR (any can match)
3. Action -- What happens when conditions match: Pass (sync the event) or Block (skip the event), with optional transforms

When CalendarPipe syncs events, each event is checked against your conditions. If the conditions match, the action is applied. If the conditions don't match, the opposite action is applied (i.e., if the action is "Block", non-matching events are passed through).

Conditions are optional. A rule with no conditions matches every event, so the action (and any transform) applies to all of them — useful when you want to transform or block everything without an artificial filter.

Adding Conditions

Click Add Condition to create a new rule. Each condition has three parts:

1. Property -- The event property to evaluate
2. Operator -- How to compare the property value
3. Value -- The value to compare against

You can also remove every condition. With none left, the builder shows "Applies to every event" and the action runs on all events — add a condition whenever you want to narrow it back down.

Condition Properties

The Visual Builder supports these event properties, organized by type:

Text Properties

Property	Description	Example Values
Title	Event title/summary	"Team Standup", "Lunch"
Description	Event description/notes	"Weekly sync meeting"
Location	Event location	"Conference Room A", "Zoom"
Organizer	Organizer's email address	"alice@example.com"

Number Properties

Property	Description	Example Values
Duration (min)	Event length in minutes	30, 60, 120
Attendee count	Number of attendees	1, 5, 20
Hour	Hour of day the event starts (0-23), in UTC	9, 14, 17

Boolean Properties

Property	Description	Values
Is weekday	Whether the event falls on Monday-Friday (in UTC)	true / false
Is all-day	Whether the event is an all-day event	true / false

note

Time-based properties (Hour, Day of week, Is weekday) are evaluated in UTC, not your local timezone — an info icon next to these properties in the builder is there to remind you. See the property reference for details and examples. For local clock times, use Time of day below.

Time of Day

Time of day matches events that overlap a daily window — a start time, an end time, and a time zone. It's the right choice for rules like "anything after 16:00": a meeting from 14:00 to 16:30 overlaps 16:00 – (empty), even though it starts earlier.

Operator	Matches when
overlaps	Any part of the event falls inside the window
does not overlap	The event sits entirely outside the window

• Leave the start empty to begin at midnight, or the end empty to run to the end of the day.
• An end earlier than the start wraps past midnight — 22:00 – 06:00 covers the night.
• The time zone defaults to your browser's and follows daylight saving time.
• An event that ends exactly when the window opens does not overlap it.
• All-day events always overlap. Add Is all-day is false to leave them out.

Special Properties

Property	Type	Values
Day of week	Day picker	Sunday (0) through Saturday (6)
Event status	Enum	Confirmed, Tentative, Cancelled
Visibility	Enum	default, public, private
Show as	Enum	free, busy
My RSVP	Enum	Accepted, Declined, Tentative, Needs action, Organizer

"Event status" is the event's own lifecycle, set by the organizer for everyone — use it (for example, Event status not equals Cancelled) to keep cancelled events out. "My RSVP" is your response to the event — use it (for example, My RSVP not equals Declined) to keep invitations you haven't accepted off your synced calendar.

Operators Reference

Different property types have different operators available:

Text Operators

Operator	Description	Example
contains	Value appears anywhere in the text	Title contains "meeting"
not contains	Value does not appear in the text	Title not contains "personal"
equals	Exact match	Location equals "Remote"
not equals	Does not exactly match	Organizer not equals "bot@example.com"
starts with	Text begins with value	Title starts with "[PROJ]"
ends with	Text ends with value	Title ends with "(optional)"

info

All text matching is case-insensitive. "Meeting", "meeting", and "MEETING" are all equivalent.

Number Operators

Operator	Description	Example
equals	Equal to value	Duration equals 30
not equals	Not equal to value	Attendee count not equals 1
>	Greater than	Hour > 17
<	Less than	Duration < 15
>=	Greater than or equal to	Attendee count >= 5
<=	Less than or equal to	Hour <= 9

Boolean Operators

Operator	Description	Example
is true	Property is true	Is weekday is true
is false	Property is false	Is all-day is false

Enum Operators

Operator	Description	Example
equals	Matches the selected value	Show as equals "free"
not equals	Does not match the selected value	Visibility not equals "private"

Combinators

When you have multiple conditions, the combinator determines how they're evaluated:

• AND (default) -- All conditions must match for the action to apply
• OR -- Any condition matching triggers the action

For example, with two conditions "Title contains meeting" AND "Is weekday is true":

• A weekday event titled "Team Meeting" -- both conditions match, action applies
• A weekend event titled "Team Meeting" -- only one condition matches, action does NOT apply (with AND)
• A weekday event titled "Lunch" -- only one condition matches, action does NOT apply (with AND)

With OR, the action would apply if either condition matches.

Actions

The action defines what happens to events that match your conditions:

Pass or Block

Action	When conditions match	When conditions don't match
Pass	Event is synced	Event is blocked
Block	Event is blocked	Event is synced

Optional Transform

When passing events, you can optionally transform them by overriding properties on the synced copy. Each field exposes a mode selector so you can choose between leaving the source value untouched, clearing it, or replacing it with a literal value:

Field	Modes	Notes
Title	Keep original / Set to...	Replaces the event title (max 500 characters); {title} inserts the original
Description	Keep original / Clear / Set to...	Replaces or empties the event description (max 5,000 characters)
Location	Keep original / Clear / Set to...	Replaces or empties the event location
Visibility	Default / Public / Private	"Default" leaves the source visibility untouched
Show as	Default / Free / Busy	"Default" leaves the source free/busy status untouched
Event colour	Rule default / a colour	Overrides the rule's colour for matching events. Google targets only.
Pre-event buffer	Minutes (0–60)	Starts the synced copy earlier so meetings aren't back-to-back. Ignored for all-day events.
Post-event buffer	Minutes (0–60)	Ends the synced copy later. Ignored for all-day events.

Mode reference

• Keep original — the source value passes through unchanged. This is the default for every field.
• Clear — the destination field is written as empty, removing whatever the source had set. Available for Description and Location.
• Set to... — reveals a text input; the value you type replaces the source on the synced copy. For Title, {title} stands in for the original so you can append or prefix without retyping every event name.

tip

Transforms only apply to the synced copy on the target calendar. The original event on the source calendar is never modified.

Step-by-Step Examples

Example 1: Block Weekend Events

Block events that fall on weekends, only syncing weekday events.

1. Click Add Condition
2. Select property: Is weekday
3. Select operator: is false
4. Set action to: Block
5. Save

Result: Events on Saturday and Sunday are blocked. Weekday events sync normally.

Example 2: Redact 1-on-1 Meetings

Pass all events, but replace the title of small meetings that look like 1:1s.

1. Click Add Condition
2. Select property: Attendee count, operator: <=, value: 2
3. Click Add Condition again
4. Select property: Title, operator: contains, value: 1:1
5. Set combinator to: AND
6. Set action to: Pass
7. Enable transform, set title to: Meeting
8. Save

Result: Events with 2 or fewer attendees AND "1:1" in the title are synced with the title replaced by "Meeting". All other events sync unchanged.

Example 3: Only Sync Long Meetings

Pass events that are 60 minutes or longer, block everything else.

1. Click Add Condition
2. Select property: Duration (min), operator: >=, value: 60
3. Set action to: Pass
4. Save

Result: Only events lasting 1 hour or more are synced. Short events (under 60 minutes) are blocked.

Related

• Templates — start from a preset and customize.
• Code Editor — switch to TypeScript for logic the builder cannot express.
• Property Reference — full list of available event properties.