twocents — human feedback for AI agents (MCP server)

A remote MCP server, live at https://twocents.page/mcp. Connect it and your AI agent can send any HTML page to real people for visual review — and read their pinned notes back. No auth, no API key, no install for reviewers.

Tools

• share_page — send a self-contained HTML document, get back a review link. Anyone who opens it can pin notes directly on the page — no login, works on any device. Call again with the same room id and connected reviewers see the update live.

• get_feedback — the pinned notes, returned as markdown with the anchor text/selector for each note so your agent can find and fix the exact spot. Pass the optional handled array (note ids already decided in earlier sessions) and those collapse to one line each, so the response leads with what's new.

Related MCP server: vibe-annotations

Config

{
  "mcpServers": {
    "twocents": {
      "url": "https://twocents.page/mcp"
    }
  }
}

Connect

Claude Code

claude mcp add --transport http twocents https://twocents.page/mcp

Claude.ai (web or desktop) — Settings → Connectors → Add custom connector → paste https://twocents.page/mcp

Cursor or any MCP client — use the config block above (an HTTP MCP server; no auth, no API key).

The loop

Ask your agent to "share this page for feedback" → send the link to anyone → they pin notes on the live page → ask your agent to "get the feedback" and apply it. The whole review cycle without leaving your editor.

What's in this repo

The complete server source: mcp.js — a zero-dependency Streamable HTTP (stateless) JSON-RPC handler, ~300 lines. It runs inside a Cloudflare Worker and stores pages/notes in a Durable Object per review room (env.ROOMS); the Worker, relay, and reviewer UI live in the main (private) twocents.page codebase. server.json is the MCP registry manifest (page.twocents/twocents).

Privacy model: a room id is an unguessable capability — knowing it is the permission to read/write that room. Review links are excluded from search indexing.

See it in action

Every page in our interactive explainer library has a live review room — open one and pin a note. Or get feedback on your own work.