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Cadenus

Cadenus lets AI agents (Claude Code, Codex, ChatGPT, OpenClaw) publish and schedule posts to Instagram, TikTok, LinkedIn and more via an MCP server with 29 tools.

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Summary

Cadenus is a social media publishing service that lets AI agents post and schedule files to major social platforms via an MCP server, CLI skill, or REST API.

What is Cadenus?

Cadenus is a social media publishing platform that lets AI agents post and schedule content to Instagram, Facebook, TikTok, LinkedIn, YouTube, and X. It is operated by GTW Scaling Solutions S.R.L. and positions itself as an operating system for agencies, with this page focused on its agent-facing capabilities. Agents connect through an MCP server, a shell skill for terminal-based agents, or REST endpoints, and can move a file from disk to a scheduled post in one command.

Key Features
  • MCP server at https://app.cadenus.io/api/mcp exposing 29 tools across publishing, read-back, planning/approval, and research
  • Direct file upload to a signed EU storage address up to 300 MB — no base64 encoding and no 100 MB tool-call limit
  • Automatic codec conversion of HEVC phone footage to H.264 before queueing, since Instagram accepts HEVC and later fails it
  • Server-side caption checks against each platform's limits (Instagram 2,200 chars/30 hashtags, TikTok 2,200, LinkedIn 3,000, YouTube 5,000, X 280)
  • Three integration paths: terminal skill (Claude Code, Codex, OpenClaw), chat connector (Claude, ChatGPT, Cursor), and REST API (n8n, Make, cron)
  • Token-based auth with read/write scopes and instant revocation; OAuth 2.1 one-click sign-in in Claude and ChatGPT
  • Draft/approval flow for client brands that require approval before publishing
  • Notion integration as an optional planning database on the same plan

Key Highlights

  • MCP server at https://app.cadenus.io/api/mcp with 29 tools grouped into publish, read-back, plan & approve, and research
  • Publishes natively to Instagram, Facebook, TikTok, LinkedIn, and YouTube, plus X per connected account
  • Agent uploads files directly to a signed storage address up to 300 MB — no base64, no 100 MB tool-call ceiling
  • HEVC phone footage is rewritten as H.264 before queueing to avoid Instagram's delayed processing failures
  • Caption limits enforced server-side per platform: Instagram 2,200/30 hashtags, TikTok 2,200, LinkedIn 3,000, YouTube 5,000, X 280
  • Connect plan at €19/month includes 8 channels, 5 GB, MCP server, skill, and API with a 7-day free trial; Starter from €39 adds client approvals and portals
  • Auth via OAuth 2.1 one-click sign-in in Claude and ChatGPT, or a Bearer token (cdn_…) with read and write scopes
  • REST endpoints under /api/agent (media, upload, confirm, posts) work with n8n, Make, and cron scripts

Best For

  • Developers using Claude Code, Codex, or OpenClaw who want the agent to publish finished video files from disk in one command
  • Social media managers working in Claude or ChatGPT chat who want to plan a week, move posts, and cancel scheduled content
  • Agencies that need client-approval rules enforced so agents get drafts instead of publishing directly
  • Automation builders wiring n8n, Make, or cron jobs to post content through the REST API
  • Teams that plan in Notion and want Cadenus to publish and write the live link back to the database

Frequently Asked Questions

Does Cadenus have an MCP server?

Yes, at https://app.cadenus.io/api/mcp, with 29 tools. In Claude or ChatGPT you add it as a custom connector and sign in; in Claude Code you use `claude mcp add`.

How does the agent send a video file?

The agent uploads it itself to a signed storage address and confirms. The file never travels inside a tool argument, so there is no base64 and no 100 MB limit — the ceiling is 300 MB.

Can the agent publish without a human approving?

On your own accounts, yes. If a brand in your workspace requires client approval, the agent gets a draft instead and is told which flow to use; there is no way around that rule from the agent's side.

What does it cost?

€19 a month on the Connect plan: eight channels, the MCP server, the skill, and the API. The first 7 days are free and you are not charged if you cancel.

What if the agent misbehaves?

Delete the token and every call stops. Every post it created stays in the calendar under the token's name, so you can cancel or move it from there.

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Information

  • Websitecadenus.io
  • Published date2026/10/03
  • Last reviewed2026/09/21

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