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Postals — the agent skill that turns any AI into a direct mail machine. One MCP tool call mails a physical handwritten postcard (real pen-and-ink, USPS 3-5 day delivery, $4.99 per card). Works with Claude Desktop, Cursor, Claude Code, OpenClaw, n8n, LangChain, and any MCP-compatible client.
Copy this markdown:[](https://marketnow.site/skill/postals-mcp)Embedding the badge shows users this skill has passed Sentinel security checks and links back to the live skill page.
MarketNow — The Agent Skill Marketplace • Sentinel Security