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Install and configure Grammarly SDK/CLI authentication.
Passed 23 of 23 test cases with the skill, and 13 of 23 without it.
and 10 more in the full report
10 fixed13 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.
What value should be assigned to the `grant_type` parameter when requesting a token from Grammarly's OAuth endpoint?
| Checked | Without skill | With skill |
|---|---|---|
| Sets grant_type to client_credentials | Missed | Passed |
The instructions your model reads when the skill loads.
Configure Grammarly API authentication using OAuth 2.0 Bearer tokens. Grammarly provides three main APIs: Writing Score API, AI Detection API, and Plagiarism Detection API. All use the same auth pattern via api.grammarly.com.
scores-api:read, scores-api:write# .env (NEVER commit)
GRAMMARLY_CLIENT_ID=your_client_id
GRAMMARLY_CLIENT_SECRET=your_client_secret
GRAMMARLY_ACCESS_TOKEN= # Populated after OAuth
// auth.ts
import 'dotenv/config';
async function getAccessToken(): Promise<string> {
const response = await fetch('https://api.grammarly.com/ecosystem/api/v1/oauth/token', {
method: 'POST',
headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
body: new URLSearchParams({
grant_type: 'client_credentials',
client_id: process.env.GRAMMARLY_CLIENT_ID!,
client_secret: process.env.GRAMMARLY_CLIENT_SECRET!,
}),
});
const { access_token, expires_in } = await response.json();
test cases passed, vs 13 / 23 without
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