Authentication
Learn how to authenticate with the Missinglettr API
The Missinglettr API uses API keys for authentication. Every request must include your API key in the Authorization header.
Getting Your API Key
- Sign up for a Missinglettr API account
- Navigate to Settings → API Keys
- Click Generate New Key
- Copy your API key (starts with
ml_live_)
Your API key is shown only once. Store it securely!
Making Authenticated Requests
Include your API key in the Authorization header:
Authorization: Api-Key ml_live_abc123def456...Example Request
curl https://api.missinglettr-api.com/v1/workspaces/ \
-H "Authorization: Api-Key ml_live_abc123def456..."API Key Best Practices
- Keep keys secret: Never expose in client-side code or public repositories
- Use environment variables: Store keys in
MISSINGLETTR_API_KEY - Rotate regularly: Regenerate keys periodically
- Separate environments: Use different keys for dev/staging/production
Rate Limiting
API requests are rate limited based on your plan:
| Plan | Requests/Hour | Posts/Month |
|---|---|---|
| Free | 100 | 500 |
| Pro | 2,000 | 10,000 |
| Enterprise | Unlimited | Unlimited |