todai
Monday, 25 May
5 min read · 836 words
  • manaflow-ai/cmux — 18,710★ total (stars today: unavailable) — Ghostty-based macOS terminal built for AI coding agents; vertical tabs, per-agent notifications, GPU-accelerated; reads your existing Ghostty config | brew install --cask cmux | https://github.com/manaflow-ai/cmux

TODAY'S ITEMS

1. Microsoft Is Pulling Claude Code Licences — Replacing with Copilot CLI

  • Microsoft's Experiences + Devices division (Windows, M365, Teams, Surface) is winding down Claude Code access by June 30 and pushing engineers to GitHub Copilot CLI; sources tell The Verge the driver is both financial (end of Microsoft's financial year) and strategic (converging on its own Copilot toolchain).
  • Claude Code was reportedly popular internally but undermined Copilot CLI adoption; the cutoff is June 30.
  • Source: The Verge
  • Why it matters: The decision (cost + internal tool competition) reveals the vendor lock-in risk any team should price in before going all-in on one agent CLI.
  • Verified

2. Superset — Run 10+ Agents in Parallel on Your Machine (YC P26 Launch)

  • Superset is a macOS app that orchestrates multiple coding agents (Claude Code, Codex, etc.) across isolated git worktrees — each task gets its own branch and directory so agents don't interfere — with a built-in diff viewer, agent status monitoring, and one-click handoff to your editor.
  • Just launched on HN as a YC P26 company; 10,700★ on GitHub; download at superset.sh.
  • Source: Hacker News Launch + GitHub
  • Why it matters: If you've been copy-pasting tasks one-at-a-time into Claude Code, Superset lets you run them all simultaneously and review the diffs without leaving one window.
  • Verified

3. Project Glasswing Update: Mythos Preview Found 10,000+ Critical Vulnerabilities in One Month

  • Anthropic's initial Project Glasswing update reports that Claude Mythos Preview and ~50 partners have found more than 10,000 high- or critical-severity vulnerabilities across major operating systems and browsers in the first month since launch.
  • Progress is now limited by how fast those vulns can be verified, disclosed, and patched, not by how fast they're found; Mythos Preview is not yet publicly released.
  • Source: Anthropic Research Blog
  • Why it matters: If you ship or depend on open-source software, expect a wave of CVE disclosures in coming months as Glasswing findings clear the 90-day coordinated disclosure window.
  • Verified

4. Anthropic Open-Sources 31 Knowledge-Work Plugins — 382,000 Downloads Day One

  • Anthropic released anthropics/knowledge-work-plugins (13,890★): 31 open-source plugins for Claude Cowork (and Claude Code) covering productivity, sales, legal, finance, engineering, and more — each bundles skills, slash commands, sub-agents, and connectors to Slack, Notion, Jira, Linear, Asana, and M365.
  • The community post hit 919 upvotes in 24 hours; the plugins are editable .md skill files that work with any agent CLI, not just Claude.
  • Source: r/ClaudeAI + GitHub
  • Why it matters: The real value is studying the skill file structure to build your own role-specific agent configurations on top of the open-sourced templates.
  • Verified

YOUR STACK — UPDATES

  • Claude Code v2.1.149 — /usage now shows a per-category breakdown of what's eating your limits (skills, subagents, plugins, per-MCP-server cost); macOS fix: find in Bash tool no longer exhausts the system file table and crashes the host on large repos. https://github.com/anthropics/claude-code/releases/tag/v2.1.149

NEW TOOL / PRODUCT SPOTLIGHT

  • nexu-io/open-design — 51,201★ — local-first, open-source Claude Design alternative; 19 skills + 71 design systems; generates web/desktop/mobile prototypes, slides, PDFs, videos, and HyperFrames from natural language; runs on Claude Code, Codex, Cursor, Gemini, and others. https://github.com/nexu-io/open-design

PROMPT OF THE DAY

/compact Focus on the architectural decisions made, the files changed and why, and the test commands needed to validate the work. Drop all debugging dead ends and failed approaches.

Directional /compact — tells Claude exactly what to preserve before summarising a long session; use when you know what the next task needs and the default compact would lose it. Community source: r/ClaudeCode "20 Claude Code commands worth knowing" https://www.reddit.com/r/ClaudeCode/comments/1t8712b/

LANDSCAPE NOTES