🔬 Research, Data & Productivity
Cited research, a knowledge base you own, and quality-of-life upgrades for daily Claude Code work.
Ars Contexta — 3,427★
A 20-minute interview turns into a complete markdown "second brain" — folders, templates, maps of content — that lives on your machine, no cloud lock-in. You need: Nothing. Install — paste into Claude Code:
/plugin marketplace add agenticnotetaking/arscontexta
/plugin install arscontexta@agenticnotetaking
Claude HUD — 25,922★
A live status line showing context-window health, which tools are running, active sub-agents, and todo progress. Once you've used it you won't go back. You need: Nothing. Install — paste into Claude Code:
/plugin marketplace add jarrodwatts/claude-hud
/plugin install claude-hud@claude-hud
Then run /reload-plugins and /claude-hud:setup.
GPTaku — Insane Research — 579★
A multi-agent research plugin that produces cited reports, plus tools for PRDs and Google Workspace. You need: Nothing for research (the Workspace plugin needs Google login). (Note: no licence declared.) Install — paste into Claude Code:
/plugin marketplace add fivetaku/gptaku_plugins
/plugin install insane-research@gptaku-plugins
Context Engineering Kit — 1,186★
13 plugins that measurably improve answer quality — reflexion (self-check), kaizen (continuous improvement), mcp, docs, tdd. You need: Nothing. (Licence: GPL-3.0 — fine to use; matters only if you redistribute.) Install — paste into Claude Code:
/plugin marketplace add NeoLabHQ/context-engineering-kit
/plugin install reflexion@context-engineering-kit
Plugins for Claude Natives — 807★
Power-user kit: gmail, google-calendar, agent-council (multiple agents debate a decision), clarify, session-wrap. You need: Google login for the gmail/calendar plugins. Install — paste into Claude Code:
/plugin marketplace add team-attention/plugins-for-claude-natives
/plugin install gmail@team-attention-plugins
Heads-up on data analysis (CSV/SQL): there's no high-trust standalone skill for this yet. Use the official xlsx skill (see Documents & Office) plus a database MCP (e.g. Supabase) — that combo handles most analysis today.