Cadenus vs PostOnce
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Cadenus compared with PostOnce
| Detail | 
Cadenus | 
PostOnce |
|---|
| What it does | Social media publishing for AI agents and teams
| Write once, publish to eight social platforms from one workspace
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| Stage | Not given
| Startup
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| Founded | Not given
| 2025
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| Based in | RO
| IE
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| Pricing model | Freemium
| Paid
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| Pricing | Connect €19/month (publishing only, 8 channels, 5 GB storage), Starter €39/month (8 brands, 3 team members, 20 GB storage), Agency €79/month (20 brands, 10 team members, 50 GB storage), Scale €129/month (45 brands, 25 team members, 150 GB storage). Yearly plans cost 10 times the monthly price (2 mon
| Solo: €15/month or €144/year (€12/month billed yearly). Pro: €30/month or €300/year (€25/month billed yearly). No per-channel fees.
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| Key features | - MCP server with 29 tools for AI agents
- Direct file upload from agent's disk up to 300 MB
- Automatic H.264 conversion for Instagram compatibility
- One-command publish or schedule to multiple platforms
- Publish to Instagram, Facebook, TikTok, LinkedIn, YouTube and X
- Client approval rules agent cannot bypass
- Revocable read-only and write tokens
- Caption validation against network-specific limits
- EU hosting for media and data
- REST API and shell skill for agent integration
| - Schedule posts to 8 social platforms
- Per-platform media optimization
- Recurring posts
- Multi-workspace support
- REST API for developers
- Basic post analytics
- Media library with Canva, Drive, and Dropbox integration
- Link shortener and hashtag groups
- Calendar and queue for scheduling
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| What makes it different | - Video codec automatically converted before posting to ensure platform compatibility
- File upload direct from agent's disk without base64 encoding limitation
- Token-based control allows instant revocation of all agent access
- Client approval rules enforced by platform prevent agent bypassing
- All posts tracked in team calendar by token name for full audit trail
| - Flat euro pricing with no per-channel fees
- Supports Bluesky and Threads in the same plan as other networks
- Clear failure status when a post fails to publish
- No per-channel fees, unlike Buffer or Later
- Built for individual operators and small teams, not enterprise
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 21 ▼ −1 (down) since last check | 28 ● no change since last check |
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| Trust Flow (Majestic) | 9 | 5 |
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| Citation Flow (Majestic) | 26 | 25 |
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| Referring domains (Majestic) | 32 | 25 |
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6 details filled in for both companies.
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