Tools

Free developer tools

Utilities for developers building on social media APIs. No login required — just open and use.

Interactive· Major platforms · hashtag counts · live feedback

Character Limit Checker

Paste your post text and instantly see character counts, hashtag limits, and over/under status across Instagram, TikTok, LinkedIn, Facebook, YouTube, Threads, and Reddit.

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Reference Table· Per-platform limits · 6 limit categories each · error codes

API Rate Limit Reference

Complete rate limit table for every platform Aether supports — posts per day, requests per hour, video limits, and the errors returned when you hit them.

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Related reading

API rate limiting explained →

Fixed-window vs token-bucket, reading rate-limit headers, and retry logic that actually works.

API overview →

One API for Instagram, TikTok, LinkedIn, Facebook, YouTube, Threads, and Reddit.