Dev ships ShareBit, a 3-tool MCP server for safely pushing Markdown to a browser
Hopeful-Business-15 · reddit · 2026-09-11
A Reddit developer showcased ShareBit, a remote Streamable HTTP MCP server (with an opencode plugin and stdio fallback) exposing exactly three tools: sharebitcreate to publish Markdown and get a private link, sharebitlist for active shares (never bodies), and sharebitread to fetch the original Markdown, rejecting cross-origin links.
Deliberate constraints: shares expire in 30 minutes by default (24h max) with a cleanup job, 10 MB per share with errors instead of silent truncation, no delete/update/revoke tools (revocation happens account-side), account-private only with no public mode or E2E encryption. Auth uses one-time pairing codes that issue revocable agent credentials, or OAuth 2.1 with PKCE. The author admits Claude/ChatGPT registration is untested and is seeking feedback on the pairing and expiry model.
Related event: ShareBit: Open-Source MCP Server for Private Agent Output Sharing(3 posts)→
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