---
title: Client Modes
description: Choose how c15t connects to its backend — full hosted integration, offline-only, or bring your own backend.
---
```ts
import { getOrCreateConsentRuntime } from 'c15t';
const { consentStore } = getOrCreateConsentRuntime({
mode: 'hosted',
backendURL: 'https://your-instance.c15t.dev',
});
```
```ts
import { getOrCreateConsentRuntime } from 'c15t';
const { consentStore } = getOrCreateConsentRuntime({
mode: 'offline',
overrides: {
country: 'DE', // Override country to trigger GDPR jurisdiction
},
});
```
```ts
import { getOrCreateConsentRuntime } from 'c15t';
const { consentStore } = getOrCreateConsentRuntime({
mode: 'custom',
endpointHandlers: {
async init() {
const res = await fetch('/my-api/consent/init');
const data = await res.json();
return { data, response: res, error: null };
},
async setConsent(options) {
const res = await fetch('/my-api/consent', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(options?.body),
});
return { data: await res.json(), response: res, error: null };
},
},
});
```