Blog
Release notes and the occasional deep dive.
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Chatbook: a notebook you can write in English
NBI 6.0 adds Chatbook, a Jupyter notebook whose cells can be written in plain English and run as generated code. Here is a real session end to end: prompts that build on each other, file context with @ mentions, a failed cell that fixes itself on the next run, hand-written code alongside prompts, and the controls that decide when generated code runs.
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NBI 5.4.0: Codex over ACP, readiness checks, and performance diagnostics
An experimental ACP agent mode with Codex. A Status card that names the missing piece of your configuration. Opt-in per-turn performance timelines. Notebook tools for managed Claude Code configurations. Plus a roundup of 5.2 and 5.3: permission modes, kernel-aware notebooks, and a faster start.
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Codex in the chat sidebar: NBI's experimental ACP agent mode
NBI 5.4 adds a second agent mode that drives an external coding agent over the Agent Client Protocol, with OpenAI Codex as the first agent. Here is how to turn it on, what a turn looks like, how approvals and Codex's sandbox work together, and what it does not do yet.
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NBI 5.1.0: tool-call status cards, custom spinners, and two security guardrails
Claude agent tool calls render as persistent status cards with inline diffs and collapsible grouping. Custom spinner verbs. Always-visible chat feedback. An MCP stdio-command allowlist and a shared-filesystem token-password check. Cancel now tears down the whole process tree.
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Coding-agent launchers, Codex, and a hardened platform
Launch coding-agent CLIs from the JupyterLab launcher, run Codex chat models through the right Copilot endpoint, and benefit from a keyboard-and-screen-reader accessibility pass plus a round of security hardening.
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An agent-aware chat sidebar
How the NBI chat sidebar in 5.0 keeps you in the loop during long Claude turns and keeps your open files in sync with what the agent does on disk.
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Managing Claude's toolbox: Skills, MCP, and Plugins
NBI 5.0 promotes Skills, Claude MCP Servers, and Claude Plugins to top-level Settings tabs, each with a force-on / force-off / user-choice admin policy.
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NBI 5.0.0 — three new Settings tabs, agent-aware UX, and a wide admin-policy surface
Skills, Claude MCP, and Plugins each get their own Settings tab with admin policies. Five coding-agent launcher tiles. Real progress feedback. Terminal drag-drop. Wide accessibility and security passes. The official mcp SDK replaces fastmcp.
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NBI 4.8.0 — Smarter workspace picker, atomic config saves, GitHub-import gate
The chat-sidebar workspace picker is now .gitignore-aware, dot-file-aware, and parallel. Config saves are atomic. A new admin policy gates GitHub-based Skill imports.
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NBI 4.7.0 — Cell output actions, agent toolbar, Claude launcher tile
Right-click any cell output for Explain / Ask / Troubleshoot. Image attachments in chat. Claude Code launcher tile. Streaming inline-chat responses. Extended admin policy coverage.
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NBI 4.6.0 — Skills management, restructured docs, Windows reliability
Claude Skills management panel, a documentation restructure, and a stack of Windows Claude-mode reliability fixes.
Older posts from 2025 have been moved to the blog archive.