thatAPI - AI Caption Writer
The AI Caption Writer API generates ready-to-post social media captions using Claude AI. Each caption is optimized for the target platform's character limits, conventions, and audience. Key Features: - 7 platforms: Instagram, TikTok, YouTube, Twitter/X, LinkedIn, Facebook, Threads - 6 tones: casual, professional, humorous, inspirational, educational, provocative - Brand voice: pass a free-text…
8.9/10 popularity
4367 ms avg latency
100% success rate
2 endpoints
The in-depth APIMemo review for this API hasn't been published yet —
the data below comes straight from the public marketplace listing.
thatAPI - AI Caption Writer endpoints
| Method | Endpoint | Description |
|---|---|---|
| POST |
Generate Caption /v1/caption/generate |
Generate one or more captions for a single platform. Supports tone selection, brand voice, hashtags, and A/B variants (up to 5). |
| POST |
Multi-Platform Generate /v1/caption/multi |
Generate platform-optimized captions for multiple platforms in one call. Each caption adapts to its platform's character limits and conventions. |
