Testing Claude Operating Social Media Inboxes with Real Write Permissions via MCP
Purple_Network3016 · reddit · 2026-08-11
The author tested PostFast's new unified inbox, which connects to Claude via MCP to read comments and send replies across TikTok, Instagram, and more. It stands out as a rare consumer social tool granting actual write permissions to an AI agent.
Highlighting security research (BlueRock found 36.7% of MCP servers vulnerable to SSRF), the author emphasizes limiting agent state space. They recommend a task-scoped token with a human approval gate—letting Claude draft while a human approves the irreversible send. The tool currently lacks agent-level audit logs and rate limiting.
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