Photo carousels
Up to 35 images per TikTok photo post.
TikTok API
TikTok's Content Posting API requires developer app registration, OAuth 2.0 flows, chunk uploads, and async status polling. Zernio replaces all of that with one POST request. No TikTok developer app needed.
- Free tier
- No credit card
- 99.97% uptime
@casa.lumenBehind the winter drop, shot in one take.Original sound · casa.lumen
Friday 316:00 PMScheduled
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How it works
Live in three steps, no TikTok app review
1
Profile
defaultTikTok
Connect TikTok
Sign up for free, get your API key and connect TikTok accounts through our OAuth flow.
2
POST /v1/posts
const { data } = await zernio.posts.createPost({ body: { content: 'Launch day! 🚀', mediaItems: [{ url: 'https://cdn.acme.com/launch.mp4' }], platforms: [ { platform: 'tiktok', accountId: 'acc_8f2a' }, ], scheduledFor: '2027-01-15T14:30:00', timezone: 'Europe/Madrid', }, });
Make one call
Send content to TikTok from one REST endpoint, right away or scheduled.
3FailedScheduledPublished
post.failed
Webhook sent to your app
Mon, 18 Jan
09:00, Europe/Madrid
Launch day! 🚀
Fri, 15 Jan at 14:30
Track every post
Follow each post from scheduled to published, with a webhook when one fails.
Endpoints
TikTok endpoints on one REST API
| Endpoint | What it does |
|---|---|
POST/v1/posts | Create, schedule, or draft a TikTok video or photo post |
GET/v1/posts/{id} | Get status, details, and platform-specific metadata of a TikTok post |
PUT/v1/posts/{id} | Update a scheduled TikTok post (content, timing, or settings) |
DELETE/v1/posts/{id} | Cancel a scheduled or delete a draft TikTok post |
GET/v1/profiles | List all connected TikTok accounts with usernames and follower counts |
GET/v1/analytics/{postId} | Get views, likes, comments, shares, and engagement rate for a TikTok post |
Media specs
What you can upload to TikTok
Zernio transcodes and optimizes media for TikTok's requirements automatically.
| Type | Format | Max size | Notes |
|---|---|---|---|
| Video | MP4, MOV, WebM | 287.6 MB | 3 sec – 10 min duration. Vertical (9:16) recommended. |
| Photos | JPEG, JPG, WebP | 20 MB per image | Up to 35 images per carousel post. PNG not supported by TikTok. |
| Aspect Ratio | 9:16 recommended | 1080×1920 px | Vertical content gets significantly more reach on TikTok |
| Audio | AAC | 128 kbps+ | Required for video posts. Zernio auto-transcodes if needed. |
| Caption | Plain text + hashtags | 2,200 characters | TikTok ignores line breaks in captions |
Capabilities
Everything the API handles for you
TikTok enforces strict rate limits and async video processing, and caps each account at 15 videos plus 15 photo posts a day, counted separately. Zernio handles queuing, backoff, and retries automatically: a post over the cap is held and published as soon as the window frees up. You get a webhook when your post goes live.
Multi-account
Connect unlimited TikTok accounts from one API key.
Video posting
Post videos to TikTok Creator and Business accounts via REST API.
Scheduling
Schedule TikTok posts for any future date and time, with timezone support.
Interaction settings
Turn comments, duets, and stitches on or off per post.
AI content labels
Label AI-generated content for compliance.
Processing webhooks
Get a webhook when TikTok finishes processing your video.
Draft mode
Create TikTok drafts for content approval workflows.
Video transcoding
Videos are transcoded to TikTok's encoding requirements automatically.
Privacy controls
Photo posts go public, followers-only, friends-only, or private. Videos publish public, or go to drafts for any other audience.
Cross-posting
Post to TikTok and 15 other platforms in a single API call.
Captions and hashtags
Captions and hashtags up to TikTok's 2,200-character limit.
Branded content
Toggle branded and promotional content disclosure per post.
No app registration
No TikTok developer app registration. Zernio handles all platform approvals.
Response
What comes back from every call
Plain JSON back from every TikTok call, with the IDs and statuses your app needs to follow up.
cURL
$
{
"post": {
"_id": "post_65f1c0a9e2b5af",
"status": "scheduled",
"content": "How to build a social media app in 2026 \u{1F680} #coding #developer #api",
"scheduledFor": "2026-03-15T14:00:00Z",
"platforms": [{
"platform": "tiktok",
"accountId": { "_id": "acc_abc123", "username": "@yourhandle" },
"status": "pending"
}],
"createdAt": "2026-03-10T10:30:00Z"
},
"message": "Post scheduled successfully"
}Start building with the TikTok API
Free tier available. No credit card required.
- Free tier
- No credit card
- 99.97% uptime