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.
More from coding & agent
- Open-sourced workflow turns ideas into storyboards with GPT image, then films via Seedance — alexcovo_eth · 2026-09-12
- Agent dev tip: kill single chats — agents messaging each other is the real unlock — xeophon · 2026-09-12
- Creator builds 3D models and relights Gaussian splats on a phone, zero clicks, all via Astra agents — bilawalsidhu · 2026-09-12
- Developer Builds an Agent That Recursively Improves Itself — zit-hb · 2026-09-12
- Searching agent chat history via tool calls instead of stuffing context each turn — weswinder · 2026-09-12
- LangChain's Engine: an agent that engineers other agents using trace data — LangChain · 2026-09-12