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Claude Blog

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Anthropic's product writing about Claude: releases, engineering practice, and how teams actually use it. No RSS, so it is read through the sitemap.

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Anthropic's illustration for the mods announcement: a hand-drawn hand placing a white block onto a wall of outlined bricks, on an orange background.
Agentsstrong signal

Claude Code mods are not sandboxed, and version 2.1.289 fixes a deny rule they could override

Anthropic introduced mods for Claude Code on October 1, 2026. They are TypeScript functions, shipped inside plugins, that can rewrite prompts, change tool calls, and redraw parts of the interface. The documentation says mods are not sandboxed and run with your permissions, which covers your files, environment variables, and API keys. On Team and Enterprise plans a built-in mod named sec-default loads first and restricts the mods that users install. Versions 2.1.288 and 2.1.289 fix several cases where permission rules did not hold.

Anthropicverified

Build plugins for Claude with the directory submission portal | Claude by Anthropic
Connectorsmedium signal

Anthropic opens a portal for submitting plugins to the Claude directory

Anthropic opened a submission portal for the Claude directory on September 25, 2026. Developers on paid Claude plans can submit a single MCP connector or a plugin bundle, follow its review, and see usage data once it is live. Existing listings need no changes.

Claude Blogverified

Claude Tag now supports personal connectors in channels | Claude by Anthropic
Connectorsmedium signal

Claude Tag can now use your own connectors when you ask it something in a Slack channel

Anthropic announced on September 24, 2026, that Claude Tag can use the connectors of the person who makes a request in a Slack channel. Until now it could reach only the connectors an administrator attached to the channel. The feature is rolling out on Team plans, with Enterprise to follow.

Claude Blogverified

Agentsmedium signal

Claude Code 2.1.282 stops repository settings from switching on telemetry export

Anthropic released Claude Code 2.1.282 on September 24, 2026. Project and local settings files can no longer turn on OpenTelemetry export, set where it goes, or capture content. The release also closes several ways a repository's files could weaken settings an administrator manages.

Claude Codeverified