c15t/docs/integrations/vercel-analytics.md

Headless JavaScript consent management platform for cookie banners, privacy preferences, consent storage, and script gating.

---
title: Vercel Analytics
description: Bootstrap Vercel Analytics with a declarative queue and script attributes.
group: integrations
icon: vercel-analytics
---
Vercel Analytics loads through `@c15t/scripts` using a declarative queue bootstrap (`vaq` + `va`) and script attributes for DSN/endpoint options.

## Integrate with c15t

**React**

```tsx
import { type ReactNode } from 'react';
import { ConsentManagerProvider } from '@c15t/react';
import { vercelAnalytics } from '@c15t/scripts/vercel-analytics';

const scripts = [vercelAnalytics()];

export function ConsentProvider({ children }: { children: ReactNode }) {
  return (
    <ConsentManagerProvider
      options={{
        mode: 'hosted',
        backendURL: 'https://your-instance.c15t.dev',
        scripts,
      }}
    >
      {children}
    </ConsentManagerProvider>
  );
}
```

**Next.js**

```tsx
'use client';

import { type ReactNode } from 'react';
import { ConsentManagerProvider } from '@c15t/nextjs';
import { vercelAnalytics } from '@c15t/scripts/vercel-analytics';

const scripts = [vercelAnalytics()];

export function ConsentProvider({ children }: { children: ReactNode }) {
  return (
    <ConsentManagerProvider
      options={{
        mode: 'hosted',
        backendURL: '/api/c15t',
        scripts,
      }}
    >
      {children}
    </ConsentManagerProvider>
  );
}
```

**JavaScript**

```ts
import { getOrCreateConsentRuntime } from 'c15t';
import { vercelAnalytics } from '@c15t/scripts/vercel-analytics';

getOrCreateConsentRuntime({
  mode: 'hosted',
  backendURL: 'https://your-instance.c15t.dev',
  scripts: [vercelAnalytics()],
});
```

## How c15t loads it

* **Category:** `measurement` (Analytics)
* **Loads when:** measurement consent is granted
* **On revocation:** unloaded - c15t removes the script from the DOM and clears access to runtime globals until consent is granted again.

Load the debug bundle or a custom endpoint when needed:

```ts
vercelAnalytics({
  mode: 'development',
  disableAutoTrack: true,
  endpoint: 'https://analytics.example.com/v1/events',
})
```

## Tracking events in your app

c15t initializes a bootstrap phase first (`vaq` plus a local `window.va` stub), then loads the remote Vercel Analytics script after `measurement` consent is granted. Calls are safe once the bootstrap stub exists (they are queued/ignored in `vaq`), but they execute only after consent is granted and the real `window.va` is injected and flushes the queue.

Guard event calls by checking consent state. From React:

```tsx
import { useCallback } from 'react';
import { useConsentManager } from '@c15t/react';

function SignupExample() {
  const { has } = useConsentManager();

  const trackSignup = useCallback(() => {
    if (has('measurement')) {
      window.va?.('signup', { plan: 'pro' });
    }
  }, [has]);
}
```

From plain JavaScript:

```ts
import { getOrCreateConsentRuntime } from 'c15t';

const { consentStore } = getOrCreateConsentRuntime();

if (consentStore.getState().has('measurement')) {
  window.va?.('signup', { plan: 'pro' });
}
```

## Types

### VercelAnalyticsOptions

|Property|Value|
|:--|:--|
|Type Name|\`VercelAnalyticsOptions\`|
|Source Path|\`./packages/scripts/src/vendors/analytics/vercel-analytics.ts\`|

\*ExtractedTypeTable: Could not extract "VercelAnalyticsOptions" from "./packages/scripts/src/vendors/analytics/vercel-analytics.ts" using base path "/home/runner/work/c15t/c15t". Verify the path/name and that the file is included by your tsconfig.\*

### Script

|Property|Value|
|:--|:--|
|Type Name|\`Script\`|
|Source Path|\`./packages/core/src/libs/script-loader/types.ts\`|

\*ExtractedTypeTable: Could not extract "Script" from "./packages/core/src/libs/script-loader/types.ts" using base path "/home/runner/work/c15t/c15t". Verify the path/name and that the file is included by your tsconfig.\*