PostOnce
PostOnce
PostOnce is a social media crossposting and scheduling tool. Post once and auto-publish to TikTok, Instagram Reels, YouTube Shorts, Facebook, LinkedIn, X and Bluesky.
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About PostOnce
PostOnce is a social media crossposting tool. A user connects their accounts, picks a main app, and keeps posting there as usual; PostOnce detects each new post and, within about 20 minutes, publishes it to the other connected platforms. It supports nine platforms through their official posting APIs: TikTok, Instagram, YouTube, Facebook, LinkedIn, X, Threads, Bluesky and Pinterest. Scheduling, existing-content tools and image repurposing are also included.
Beyond the main crossposting workflow, PostOnce offers a developer REST API and an MCP server, so posts can be published from AI assistants such as ChatGPT, Claude and Grok, or from coding tools like Claude Code, Codex and Cursor. It lists 17 integrations, including Google Drive, Canva, Dropbox, Zapier, Make and an n8n node.
The product is aimed at people who already post daily: UGC creators, coaches, small businesses, theme pages, artists, realtors and agencies. Agencies can invite clients to connect their own accounts via a link. The company reports 3,500+ creators and 200,000+ posts published.
Best for
- Creators posting short videos daily
- UGC creators reposting brand content
- Agencies managing client social accounts
- Small businesses keeping several channels active
Pros
- Keeps existing posting workflow; no calendar or re-uploads required
- Publishes to nine platforms via official APIs
- Unlimited posts and workflows on every plan
- Developer API and MCP access included in all plans
Cons
- No permanent free plan shown, only a 7-day trial
- Plans are capped by number of connected social accounts
Pricing
Plans are Creator at $29/mo (15 accounts), Pro at $69/mo (50 accounts) and Agency at $199/mo (200 accounts), with yearly billing giving two months free, plus a 7-day free trial with no credit card required.
PostOnce FAQ
- Which platforms does PostOnce support?
- It crossposts to TikTok, Instagram, YouTube, Facebook, LinkedIn, X, Threads, Bluesky and Pinterest.
- How quickly are posts published to other platforms?
- After posting in the main app, PostOnce publishes the content to the other platforms within 20 minutes.
- Is there a free trial or refund?
- There is a 7-day free trial with no credit card required, and a full refund within 7 days of paying.
- Can PostOnce be used with AI or automation tools?
- Yes, it offers a REST API and MCP access, and integrates with ChatGPT, Claude, Zapier, Make, n8n, Canva and Google Drive, among others.
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