Claude Code (Aug-Oct 2026 updates)

Anthropic's agentic coding CLI/desktop app shipped weekly updates through August-October 2026, including /design, claude plugin eval, default auto mode, and Mods.

Anthropic · Developer tools and coding agents · tool

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Overview

From July 25 to October 1, 2026, Claude Code added: Claude Opus 5 as the default model with a 1M-token context; a Claude Security plugin running multi-agent vulnerability scans; auto mode as the default permission mode on Pro/Max/Team from August 14; a /design research preview bringing an artboard workflow into the CLI; Claude Fable 5.1 with a 1M-token context; claude plugin eval, which scores a plugin against a no-plugin baseline; and, on October 1 with v2.1.287, Mods — event-driven TypeScript functions that hook into Claude Code's execution pipeline to intercept tool calls, permission requests, and screen-rendering events, letting users rewrite prompts, add custom UI, or replace built-in features (the built-in /diff is now itself a mod). Mods can be hand-written or generated by asking Claude Code, are hot-reloaded in-session, and distribute through the existing plugin install/share workflow.

This is a sourced directory entry. Features and capabilities are reported in the linked sources; this entry does not document independent Aymorphic testing.

Key features

  • /design artboard workflow research preview
  • auto mode as the default permission mode on Pro/Max/Team from August 14
  • claude plugin eval scores a plugin against a no-plugin baseline
  • Claude Opus 5 and Claude Fable 5.1 added, both with 1M-token context
  • Claude Security plugin runs multi-agent vulnerability scans
  • Mods (v2.1.287, Oct 1): TypeScript Function Hooks that intercept tool calls, permissions, and UI rendering to rewrite, replace, or extend agent behavior
  • Mods are hot-reloadable, can be Claude-generated, and ship/distribute through plugins

Use cases

  • Agentic coding in CLI, desktop, and IDE
  • Automated plugin quality testing before distribution
  • Vulnerability scanning integrated into the coding workflow
  • Customizing or replacing built-in Claude Code behavior and UI via Mods

Pricing

Bundled into existing Pro/Max/Team/Enterprise subscription and API pricing; no separate fee.

Pricing reflects the source record and may change. Confirm current terms with the provider.

Dates and sources

Released
Not listed
Record updated
6 Oct 2026
Record last checked
6 Oct 2026

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