Webhook Actions

Webhook Actions run custom JavaScript whenever a Vitally Playbook fires. Zudo receives the webhook, executes your script, and updates account traits in Vitally — no separate integration required. Common use cases: auto-renewal date calculation, conditional trait updates, data transformations (e.g. days until renewal), and audit trail timestamps.

Setup

Create the action in Zudo

Go to Settings → Connections.
Find your Vitally connection and open it.
Under Playbook Webhook Actions, click + Add Action.
Fill in the fields:
- Name — a descriptive label (e.g., “Auto-Renewal Handler”)
- Description — what this action does (optional but recommended)
- JavaScript Code — your custom logic (see Writing Your Script below)
- Enabled — toggle to activate or deactivate the action
Save the action.

Copy the webhook URL

After saving, each action gets a unique webhook URL. Click the copy button next to the action to copy it.The URL format is:

https://your-domain.com/api/webhooks/vitally/{unique-token}

Keep this URL — you’ll paste it into Vitally in the next step.

Configure the Vitally Playbook

In Vitally, create or open the Playbook you want to use.
Add a Webhook action step.
Paste your webhook URL into the URL field.
Set your trigger conditions as needed.
Activate the Playbook.

From this point on, every time the Playbook fires, Vitally will POST to your webhook URL and Zudo will run your script.

Writing Your Script

Your script runs in a secure JavaScript sandbox with two input objects. It must return either a trait update object or null.

Available Variables

`account`

The full Vitally account object, fetched fresh at the time the webhook fires. Use this for the latest trait values.

// Access traits via account.traits
const expDate = account.traits?.current_contract_expiration;
const interval = account.traits?.billing_interval;
const accountName = account.name;

`payload`

The raw webhook payload sent by Vitally. It contains the playbook context and a snapshot of the account at the time of the trigger.

// payload structure
{
  playbookId: "playbook-uuid",
  matchedAt: "2026-02-02T21:20:54.345Z",
  matchId: "unique-match-id",
  match: {
    account: {
      id: "vitally-account-uuid",
      // Traits are at the TOP LEVEL here — not nested under .traits
      current_contract_expiration: "2026-03-15",
      billing_interval: "annual",
    }
  }
}

Important: The account object nests traits under account.traits.key, but the payload object puts traits directly on payload.match.account.key. When accessing the same trait from either source:

// From account object (traits nested)
const expFromAccount = account.traits?.current_contract_expiration;

// From payload object (traits at top level)
const expFromPayload = payload.match?.account?.current_contract_expiration;

Use account when you need the most up-to-date value. Use payload when you need the value as it was at the moment the Playbook triggered.

Helper Functions

The sandbox includes built-in helpers for common date and interval operations.

Date Helpers

Function	Description	Example
`addMonths(date, months)`	Add months to a date	`addMonths("2026-01-31", 1)` → `"2026-02-28"`
`addDays(date, days)`	Add days to a date	`addDays("2026-01-15", 30)` → `"2026-02-14"`
`addYears(date, years)`	Add years to a date	`addYears("2026-01-15", 1)` → `"2027-01-15"`
`today()`	Get today’s date as a string	`today()` → `"2026-02-04"`
`now()`	Get current datetime (ISO)	`now()` → `"2026-02-04T12:30:45.123Z"`
`parseDate(date)`	Parse any date to ISO format	`parseDate("Jan 15, 2026")` → `"2026-01-15"`
`isPast(date)`	Check if a date is in the past	`isPast("2025-01-01")` → `true`
`isFuture(date)`	Check if a date is in the future	`isFuture("2027-01-01")` → `true`
`diffDays(date1, date2)`	Days between two dates	`diffDays("2026-01-01", "2026-01-15")` → `14`

Interval Helpers

Function	Description	Example
`intervalToMonths(interval)`	Convert interval name to months	`intervalToMonths("annual")` → `12`
`addInterval(date, interval)`	Add a named interval to a date	`addInterval("2026-01-15", "annual")` → `"2027-01-15"`

Supported interval names for addInterval and intervalToMonths:

Interval name	Months
`monthly`, `month to month`	1
`quarterly`	3
`semi-annual`, `semiannual`, `bi-annual`	6
`annual`, `yearly`	12
`biennial`, `2-year`	24
`triennial`, `3-year`	36

Returning a Result

Your script must return one of two things:

Update traits

Return an object with a traits key:

return {
	traits: {
		trait_key: "new_value",
		another_trait: 12345,
		date_trait: "2026-12-31",
	},
};

Trait keys should match the trait paths in Vitally (e.g., current_contract_expiration). Values can be strings, numbers, booleans, or ISO date strings.

Skip the update

Return null when you don’t want to make any changes:

return null;

Return null when conditions aren’t met, required data is missing, or you want to skip a particular trigger.

Code Examples

Auto-Renewal: Calculate Next Expiration Date

Use this to automatically advance the contract expiration date when a subscription renews.

// Get current expiration from either source
const currentExp = account.traits?.current_contract_expiration || payload.match?.account?.current_contract_expiration;

const interval = account.traits?.billing_interval || payload.match?.account?.billing_interval || "annual";

if (!currentExp) {
	console.warn("No expiration date found, skipping");
	return null;
}

const newExpiration = addInterval(currentExp, interval);

return {
	traits: {
		current_contract_expiration: newExpiration,
		last_auto_renewal_at: now(),
	},
};

Set a Date Trait to Today

Use this to stamp a date trait whenever a Playbook fires — useful for audit trails.

return {
	traits: {
		last_contacted_at: today(),
	},
};

Conditional Update

Only update a trait when a specific condition is true; skip otherwise.

const autoRenew = account.traits?.auto_renew || payload.match?.account?.auto_renew;

if (autoRenew === true) {
	return {
		traits: {
			last_auto_renew_check: today(),
		},
	};
}

return null; // Skip if auto_renew is not true

Calculate Days Until Renewal

Compute a numeric trait from an existing date trait.

const expDate = account.traits?.current_contract_expiration;

if (!expDate) {
	return null;
}

const daysUntil = diffDays(today(), expDate);

return {
	traits: {
		days_until_renewal: daysUntil,
	},
};

Troubleshooting

Error	Cause	Solution
`Webhook action not found`	Invalid token in the URL	Check that the webhook URL is correct and hasn’t changed
`Action is disabled`	The action’s toggle is off	Enable the action in Settings → Connections
`Connection is disabled`	The Vitally connection is off	Enable the Vitally connection in Connections
`Missing account in payload`	Malformed Vitally webhook	Verify the Playbook webhook step is configured correctly
`Execution timed out`	Your script took more than 5 seconds	Simplify the logic; remove any loops or heavy operations
`Invalid date: ...`	A bad value was passed to a date helper	Check that the date string is valid before passing it

Debugging tips:

Use console.log in your script — logs appear in the execution stats view for the action.
Check the action card in Settings for trigger count, error count, and the last error message.
Start with { traits: { test_trait: today() } } to confirm the webhook fires before adding complex logic.
The code editor validates syntax before saving, but runtime errors only surface after a real trigger.

Best Practices

Validate inputs before using them — check for null or undefined before accessing nested properties.
Return null instead of throwing when required data is missing.
Prefer account.traits for the latest values; payload may be slightly stale.
One action per Playbook trigger is easier to debug than one script that does everything.
Don’t log full account objects or traits that contain PII.
Test in staging before activating in production.

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Webhook Actions

Setup

Writing Your Script

Available Variables

`account`

`payload`

Helper Functions

Date Helpers

Interval Helpers

Returning a Result

Update traits

Skip the update

Code Examples

Auto-Renewal: Calculate Next Expiration Date

Set a Date Trait to Today

Conditional Update

Calculate Days Until Renewal

Troubleshooting

Best Practices

​Setup

​Writing Your Script

​Available Variables

​account

​payload

​Helper Functions

​Date Helpers

​Interval Helpers

​Returning a Result

​Update traits

​Skip the update

​Code Examples

​Auto-Renewal: Calculate Next Expiration Date

​Set a Date Trait to Today

​Conditional Update

​Calculate Days Until Renewal

​Troubleshooting

​Best Practices

Setup

Writing Your Script

Available Variables

`account`

`payload`

Helper Functions

Date Helpers

Interval Helpers

Returning a Result

Update traits

Skip the update

Code Examples

Auto-Renewal: Calculate Next Expiration Date

Set a Date Trait to Today

Conditional Update

Calculate Days Until Renewal

Troubleshooting

Best Practices