Let your agent ask people for answers and approvals by link, with signed receipts.
Streamable HTTP
https://mcp.sess.si/mcpclaude mcp add --transport http sess https://mcp.sess.si/mcp@sess.si/mcp · npm 0.3.0 · stdio
claude mcp add --transport stdio sess -- npx -y @sess.si/mcp@0.3.0