diff --git a/frontend/src/API.ts b/frontend/src/API.ts
index 4ca97f79a..4dc094128 100644
--- a/frontend/src/API.ts
+++ b/frontend/src/API.ts
@@ -57,12 +57,14 @@ export const useParticipantScores = () =>
 export const useParticipantLink = () =>
     useGet(API_BASE_URL + URLS.participant.link);
 
+type ConsentResponse = boolean | null;
+
 export const useConsent = (slug: string) =>
-    useGet(API_BASE_URL + URLS.result.get('consent_' + slug));
+    useGet<ConsentResponse>(API_BASE_URL + URLS.result.get('consent_' + slug));
 
 interface CreateConsentParams {
     block: Block;
-    participant: Participant;
+    participant: Pick<Participant, 'csrf_token'>;
 }
 
 /** Create consent for given experiment */
diff --git a/frontend/src/components/Consent/Consent.test.jsx b/frontend/src/components/Consent/Consent.test.tsx
similarity index 52%
rename from frontend/src/components/Consent/Consent.test.jsx
rename to frontend/src/components/Consent/Consent.test.tsx
index c9686611e..153874fff 100644
--- a/frontend/src/components/Consent/Consent.test.jsx
+++ b/frontend/src/components/Consent/Consent.test.tsx
@@ -1,9 +1,8 @@
-import React from 'react';
 import { fireEvent, render, waitFor } from '@testing-library/react';
-import Consent from './Consent';
+import Consent, { ConsentProps } from './Consent';
 import { useConsent } from '../../API'
 import { saveAs } from 'file-saver';
-import { vi } from 'vitest';
+import { vi, Mock, expect, it, describe, } from 'vitest';
 
 global.Blob = vi.fn().mockImplementation((content, options) => ({
     content,
@@ -26,51 +25,60 @@ const mockBlock = {
     loading_text: 'Loading...',
 };
 
+const getConsentProps: (overrides?: Partial<ConsentProps>) => ConsentProps = (overrides) => ({
+    title: 'Consent',
+    text: '<p>Consent Text</p>',
+    block: mockBlock,
+    participant: { csrf_token: '42' },
+    onNext: vi.fn(),
+    confirm: 'Agree',
+    deny: 'Disagree',
+    ...overrides,
+});
+
 describe('Consent', () => {
     it('renders loading state correctly', () => {
-        useConsent.mockReturnValue([null, true]); // Mock loading state
-        const { getByText } = render(<Consent block={{ slug: 'test-experiment', loading_text: 'Loading...' }} />);
-        expect(document.body.contains(getByText('Loading...'))).to.be.true;
+        (useConsent as Mock).mockReturnValue([null, true]); // Mock loading state
+        const { getByText } = render(<Consent {...getConsentProps({ block: { slug: 'test-experiment', loading_text: 'Loading...' } })} />);
+        expect(document.body.contains(getByText('Loading...'))).toBe(true);
     });
 
     it('renders consent text when not loading', () => {
-        useConsent.mockReturnValue([null, false]);
-        const { getByText } = render(<Consent text="<p>Consent Text</p>" block={mockBlock} />);
-        expect(document.body.contains(getByText('Consent Text'))).to.be.true;
+        (useConsent as Mock).mockReturnValue([null, false]);
+        const { getByText } = render(<Consent {...getConsentProps({ text: '<p>Consent Text</p>', block: { slug: 'test-experiment', loading_text: 'Loading...' } })} />);
+
+        expect(document.body.contains(getByText('Consent Text'))).toBe(true);
     });
 
     it('calls onNext when Agree button is clicked', async () => {
-        useConsent.mockReturnValue([null, false]);
+        (useConsent as Mock).mockReturnValue([null, false]);
         const onNext = vi.fn();
-        const { getByText } = render(<Consent onNext={onNext} confirm="Agree" block={mockBlock} />);
+        const { getByText } = render(<Consent {...getConsentProps({ confirm: 'Agree', block: mockBlock, onNext })} />);
         fireEvent.click(getByText('Agree'));
 
         await waitFor(() => expect(onNext).toHaveBeenCalled());
     });
 
     it('triggers download when Download button is clicked', async () => {
-        useConsent.mockReturnValue([null, false]);
-        const { getByTestId } = render(<Consent text="<p>Consent Text</p>" block={mockBlock} />);
+        (useConsent as Mock).mockReturnValue([null, false]);
+        const { getByTestId } = render(<Consent {...getConsentProps()} />);
         fireEvent.click(getByTestId('download-button'));
 
         await waitFor(() => expect(saveAs).toHaveBeenCalled());
     });
 
     it('auto advances if consent is already given', () => {
-        useConsent.mockReturnValue([true, false]);
+        (useConsent as Mock).mockReturnValue([true, false]);
         const onNext = vi.fn();
-        render(<Consent onNext={onNext} block={mockBlock} />);
+        render(<Consent {...getConsentProps({ block: mockBlock, onNext })} />);
         expect(onNext).toHaveBeenCalled();
     });
 
     it('calculates style for consent text correctly', () => {
-        useConsent.mockReturnValue([null, false]);
+        (useConsent as Mock).mockReturnValue([null, false]);
         Object.defineProperty(window, 'innerHeight', { writable: true, configurable: true, value: 800 });
-        const { getByTestId } = render(<Consent text="<p>Consent Text</p>" block={mockBlock} />);
+        const { getByTestId } = render(<Consent {...getConsentProps()} />);
         const consentText = getByTestId('consent-text');
         expect(consentText.style.height).toBe('500px');
     });
-
-
-
 });
diff --git a/frontend/src/components/Consent/Consent.jsx b/frontend/src/components/Consent/Consent.tsx
similarity index 88%
rename from frontend/src/components/Consent/Consent.jsx
rename to frontend/src/components/Consent/Consent.tsx
index da7641749..8f0a77bb3 100644
--- a/frontend/src/components/Consent/Consent.jsx
+++ b/frontend/src/components/Consent/Consent.tsx
@@ -1,4 +1,4 @@
-import React, { useEffect } from "react";
+import { useEffect } from "react";
 import { saveAs } from 'file-saver';
 
 import { URLS } from "@/config";
@@ -6,9 +6,20 @@ import Button from "../Button/Button";
 import Loading from "../Loading/Loading";
 import { createConsent, useConsent } from "../../API";
 import classNames from "classnames";
+import Participant from "@/types/Participant";
+
+export interface ConsentProps {
+    title: string;
+    text: string;
+    block: any;
+    participant: Pick<Participant, 'csrf_token'>;
+    onNext: () => void;
+    confirm: string;
+    deny: string;
+}
 
 /** Consent is an block view that shows the consent text, and handles agreement/stop actions */
-const Consent = ({ title, text, block, participant, onNext, confirm, deny }) => {
+const Consent = ({ title, text, block, participant, onNext, confirm, deny }: ConsentProps) => {
     const [consent, loadingConsent] = useConsent(block.slug);
     const urlQueryString = window.location.search;
 
@@ -30,7 +41,7 @@ const Consent = ({ title, text, block, participant, onNext, confirm, deny }) =>
 
     const onDownload = async () => {
         const doc = new DOMParser().parseFromString(text, 'text/html');
-        const txt = doc.body.textContent.split('  ').join('');
+        const txt = doc.body.textContent ? doc.body.textContent.split('  ').join('') : '';
         const blob = new Blob([txt], { type: "text/plain;charset=utf-8" });
         saveAs(blob, 'consent.txt');
     }