Grammarly Writing Score Integration

Grammarly Writing Score Integration

Overview

Integrate Grammarly's Writing Score API into your application. Score documents, track writing quality over time, and provide feedback. The API evaluates text across four dimensions: engagement, correctness, clarity, and tone.

Prerequisites

• Completed grammarly-install-auth setup
• Understanding of score dimensions

Instructions

Step 1: Typed Score Client

// src/grammarly/scoring.ts
interface WritingScore {
  overallScore: number;
  engagement: number;
  correctness: number;
  clarity: number;
  tone: number;
}

interface ScoreRequest {
  text: string;
  audienceType?: 'general' | 'knowledgeable' | 'expert';
  domain?: 'academic' | 'business' | 'general' | 'email' | 'casual';
}

async function scoreDocument(req: ScoreRequest, token: string): Promise<WritingScore> {
  const response = await fetch('https://api.grammarly.com/ecosystem/api/v2/scores', {
    method: 'POST',
    headers: { 'Authorization': `Bearer ${token}`, 'Content-Type': 'application/json' },
    body: JSON.stringify(req),
  });
  if (!response.ok) throw new Error(`Grammarly API ${response.status}: ${await response.text()}`);
  return response.json();
}