PostSider
Schedule and publish to 30+ social networks from one calendar — or hand the queue to your AI agent.
- Based in
Poland- Category
- social-media
- Source & hosting
- Proprietary · Vendor-hosted
Business overview
PostSider is social media scheduling that treats AI agents as first-class users. The surface most people meet is a drag-and-drop calendar: plan a month, drag posts across days and channels, compose once and tailor per platform, set queues to publish at the best time, and see reach and performance across every channel in one view. It publishes to more than 30 networks — X, Instagram, TikTok, YouTube and LinkedIn through Discord, Telegram, Mastodon and Bluesky.
The second surface is machine-facing. The same scheduling, publishing and analytics are exposed through a Model Context Protocol server, a typed REST API and SDKs, so Claude, Codex, Cursor or any MCP agent can draft a post and queue it with no per-platform glue code. Sixty API requests a minute are documented, and one integration covers every network. Channel tokens are encrypted at rest with AES-256-GCM, requests are hardened against SSRF and CSRF, and access is rate-limited per channel with least privilege.
It is built and run by one person — Lukasz Blania, working from Poland under Lumi Zone — and that is also the pitch: whoever answers your support email wrote the code. The Standard plan is $20/month for one seat, five channels and 400 posts, with a 10-channel, unlimited-team tier above it. The AI layer checks and refines what you or your agent drafted rather than generating filler, and the whole product carries a 7-day trial with no card.
Value proposition
One calendar for 30+ social networks, plus an MCP server, REST API and SDKs so your AI agent can draft, schedule and publish without per-platform glue code. $20/month flat for 5 channels — not per-channel billing — with a 7-day trial and no card.
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