Social Media Tools API

Video downloaders, hashtag checkers, and transcription via API. Available on all paid plans.

Get API AccessView API Docs
  • 11 download tools
  • Hashtag checker
  • Same daily limits on every paid plan
API keys
One API key unlocks video downloads, captions, and more.

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Warner Music Group
MoFlo
ClickUp
Readdy
RE/MAX
Moving Monkey®

Key Features

Paid Plans Only

All paid usage-based accounts include the full Tools API at the same daily limits. No tier-based caps.

Video Downloaders

YouTube, TikTok, Instagram, X, Facebook, LinkedIn, Bluesky. HD + audio-only.

Hashtag Checker

Check if Instagram hashtags are banned or restricted.

YouTube Transcript

Extract full transcripts for repurposing and SEO.

Generous Limits

50 to unlimited daily calls depending on plan.

Same API Key

Use your existing Zernio key. No extra setup.

How It Works

1

Get API Key

Sign up for a paid plan. Same key for posting and tools.

2

Make API Calls

Call any tool endpoint with your Bearer token.

3

Process Results

JSON responses with download URLs, transcripts, or analysis.

Why Use Tools API

Build Automations

Integrate downloads and analysis into your workflows.

No Scraping

Clean API. We handle platform complexity.

Always Working

We update when platforms change. No broken scrapers.

Scale with You

50 calls/day to unlimited.

Code Examples

Download YouTube Video

curl -X GET "https://zernio.com/api/v1/tools/youtube/download?url=https://youtube.com/watch?v=dQw4w9WgXcQ" \
  -H "Authorization: Bearer YOUR_API_KEY"
View full API documentation

See it in action

Connected accounts
Tools work across every connected platform.

Frequently Asked Questions

Ready to Automate?

API access to all tools with any paid plan.

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  • 11 download tools
  • Hashtag checker
  • Same daily limits on every paid plan