CLI Improvements and Mermaid ASCII Diagrams

Source: Cursor Date: 2026-02-18 URL: https://cursor.com/changelog/cli-feb-18-2026

Summary

Cursor CLI gains Plan Mode with a persistent decision menu (build in cloud or locally), Mermaid ASCII diagram rendering inline in CLI conversations (toggle with Ctrl+O), Emacs-style navigation shortcuts, and /plan for revisiting current plans. Agent sessions now save as JSONL transcripts. Cursor Blame extends to track AI attribution across formatters. MCP gains selective server disabling and credential refresh.

Implications

Agent-IDE feature race. Mermaid ASCII rendering in CLI is a quality-of-life feature that signals Cursor treating its CLI as a full-featured product, not a lightweight companion to the GUI. JSONL session transcripts are more significant: they create an audit trail for agent sessions that can be replayed, analyzed, or fed into observability tooling. This is the infrastructure for agent session management that CLI tools like Aider and Claude Code handle only via terminal history.

MCP/protocol adoption. Selective MCP server disabling and credential refresh closes reliability gaps that block production MCP deployments — if one MCP server crashes, it no longer takes down the whole context. This is the kind of operational hardening that signals MCP moving from prototype to production use.

Watch: Whether JSONL transcripts become searchable via the dashboard and whether Plan Mode’s cloud-vs-local decision surface becomes a cost optimization tool (route cheap tasks local, expensive tasks cloud).