CATCH #506
DETECTED AUG 4, 2026 07:29 UTC
THE CATCHscore 6/10
EXHIBIT 506 · URGENT
Aug 4, 2026 07:29 UTC
github_releases+pages
anthropics/claude-code
Claude Code v2.1.221 introduces a new Focus view for VSCode, improved sandbox credential handling with a 'mask' mode for Linux/WSL, and a prompt-audit subcommand for the claude-api skill.
READY TO POST:
claude code just dropped v2.1.221! new vscode focus view looks handy for cleaning up chat during tool use. also some nice sandbox credential masking for linux users.
devs using claude code, check out the new prompt-audit subcommand in v2.1.221. could be useful for optimizing prompts for newer models.
EVIDENCE — the receipts
[MERGED across 2 sources: github_releases, pages]
shared signal: claude-api, claude-code
--- github_releases :: anthropics/claude-code ---
anthropics/claude-code release: v2.1.221
name: v2.1.221
published: 2026-08-04T00:14:23Z
url: https://github.com/anthropics/claude-code/releases/tag/v2.1.221
## What's changed
- [VSCode] Added Focus view: a chat-menu toggle that hides tool activity behind an expandable per-turn summary with a live running-tool indicator, toggled with `Ctrl+Alt+F` or the "Claude Code: Toggle Focus view" command
- Added `mode: "mask"` for sandbox credential files on Linux and WSL — sandboxed commands read a sentinel copy (the whole file, or just the spans captured by an `extract` regex) while the sandbox proxy substitutes the real value on egress; on macOS file masking falls back to `deny`
- Added warnings to `claude plugin validate` when a marketplace or plugin name would be rejected by Claude Desktop's managed marketplace sync
- Added a `prompt-audit` subcommand to the `claude-api` skill for auditing prompts and tool descriptions for patterns written for older models
- Fixed a Bash tool permission-check bypass where zsh could execute hidden commands in `[[ ]]` regex conditionals; affected commands now prompt for permission
- Fixed PowerShell permission checks mishandling paths containing quote characters on Windows; such paths now prompt for approval
- Fixed the thinking toggle having no effect for the rest of a session that started with thinking off; disabling an MCP server mid-connect no longer silently reverts
- Fixed MCP servers from `--mcp-config` not being connected before the first turn in print mode (`-p`), which made the model emit tool calls as literal text
- Fixed @-mentioned files being silently dropped when pressing Esc to retract a prompt and resubmitting it
- Fixed a crash when preparing API requests for SDK MCP tools named after built-in object properties such as `constructor`
- Fixed WebSearch failing with a 400 error at effort
caught by the 20-minute sweep ·
the live wire · all receipts