GitHub has released a new Copilot agent for Visual Studio. Built on the same Copilot SDK as the CLI, its built-in .NET/Azure skills ship "off by default," and organization-level custom instructions are added too. Here are the key points and caveats for adopting it.
GitHubがVisual Studio向けCopilotの新エージェントを公開。CLIと同じCopilot SDK上に作られ、.NET／Azureの組み込みスキルは「既定でオフ」、組織カスタム指示も追加。導入の勘所と注意点を整理します。
GitHub has made Agent Skills and MCP servers generally available in Copilot code review. Use SKILL.md to hand over your company's standards and MCP to pull in context from issue trackers and docs, with external calls limited to read-only.
GitHubがCopilotのコードレビューでAgent SkillsとMCPサーバーを正式版に。SKILL.mdで自社基準を、MCPで課題管理やドキュメントの文脈を読み込ませ、外部呼び出しは読み取り専用に限定する。
OpenAI's Codex 0.146.0 (released July 29) arrives. Session naming, thread pinning, and history forking turn conversations into a "workspace you can tidy up," while support has been added for plugin marketplaces targeting Claude Code and Bedrock. Lock-in loosens—but the homework of governing third-pa
OpenAIのCodex 0.146.0（7/29公開）が登場。セッションへの命名・スレッドのピン留め・履歴フォークで会話を「片付けられる作業場」に変え、Claude CodeやBedrock向けのプラグインマーケットプレイスにも対応。囲い込みが緩む一方で、第三者拡張のガバナンスという宿題も残る。
The full weights of "Kimi K3," a largest-class open model with 2.8 trillion total parameters, were released on July 27. We lay out the reality of 1.56TB of actual data and a 64-accelerator-class cluster, the fine print of its custom license, and the one line that matters most for running it in-house
総パラメータ2.8兆の「最大級オープンモデル」Kimi K3の全重みが7月27日に公開。1.56TBの実物と64基級クラスタという現実、独自ライセンスの但し書き、そして社内利用は条件外という「内製で回す」うえで効く一文を整理します。
The new "2026-07-28" version of the connection standard MCP was finalized on July 28. The same day, Anthropic announced its support, rolling out to Claude products—in stages—MCP Apps, which let tools return an "operable screen" inside the conversation, along with enterprise authentication, observabi
接続規格MCPの新仕様「2026-07-28」が7月28日に最終化。同日Anthropicが対応を発表し、ツールが会話の中に「操作できる画面」を返すMCP Apps、企業向け認証・可観測性・MCPトンネルをClaude製品へ順次展開する。月4億DLの配管が製品に降りてきた。
Anthropic's new rules for "context design in the Claude 5 era," published July 24, 2026. Cutting 80% of Claude Code's system prompt caused no drop in accuracy. This piece lays out six shifts—lightening CLAUDE.md and moving procedures into skills—along with the concerns around automatic memory and de
Anthropicが2026年7月24日に公開した「Claude 5世代の文脈設計」新ルール。Claude Codeのシステムプロンプトを8割削っても精度は落ちなかった。CLAUDE.mdを軽くし手順はスキルへ移す6つの転換と、自動メモリ・判断委譲への懸念を整理します。
