"Proton Calendar" matching MCP connectors:

Remote MCP endpoint wrapping instapdown.com — 16 tools covering Instagram Reels/Story/Carousel/profile-picture downloaders, engagement audit and weighted-ER calculator, live hashtag search, Reels hook generation, Unicode fonts, best-time-to-post for 17 markets and a 2026 content calendar. Public Instagram data only, no auth.

Plan, schedule and publish social media posts across Instagram, Facebook, LinkedIn and X. An agent can read your content calendar and brand voice, find free posting slots that respect each project's minimum gap and its audience's prime-time windows, draft a separate post for each platform, and — with explicit opt-in and per-post confirmation — publish. 14 tools, each declaring whether it reads or writes. Docs: https://socialroute.net/mcp

Schedule and publish to LinkedIn, X, and Threads from your AI. Content calendar, approval-first.