What changed in AI coding tools, with sources.

Latest digest

Digest for 12 to 18 October 2026 (through 15 October): 6 dated items from official sources.

• 13 Oct 2026Cursor

  Origin App Marketplace

  Source wording: Origin now integrates with over 20 apps for deployments, CI, code review, security, monitoring, and project management, from partners including Cloudflare, Linear, Sentry, and Socket Security.

  over 20 apps Source: Cursor changelog

• 14 Oct 2026Claude Codeversion 2.1.299

  Claude Code v2.1.299

  Source wording: Added CLAUDE_CODE_DISABLE_FILE_MENTIONS environment variable: Claude gets the paths of @ file mentions to read with its file tools, not the files' contents

  Source: Claude Code release notes

• 15 Oct 2026Claude Codeversion 2.1.301

  Claude Code v2.1.301

  Source wording: Added the % motion to vim mode: jump to the matching bracket, alone or with d/c/y

  Source: Claude Code release notes

• 15 Oct 2026Codexversion 0.163.0

  Codex 0.163.0

  Source wording: Open /config to search preferences across categories, change supported settings immediately, and see which changes require a restart.

  Source: Codex release notes

All issues

Which agent reads which file

• Reads 12
• Reads, with conditions 1
• Only if configured 3
• Migration only 4
• Not read 1
• Unverified 15

The instruction file matrix covers 4 tools and 9 file types. Each of its 36 cells links to an official page and shows the date it was checked. 15 of them are marked unverified because the cited official page does not mention the file, and 4 are marked migration only. The data was last reviewed on 2026-10-16.

The generator writes a first version of those files from a short form, in your browser.