Claude Code v2.1.219 and v2.1.220 released

Anthropic

Tools official 2 src. ~1 min

Claude Code v2.1.219 (July 24, 2026) added Claude Opus 5 as the default Opus model with 1M context, a sandbox.network.strictAllowlist setting to deny non-allowlisted hosts, a DirectoryAdded hook, nested subagent support to depth 3, and mcp_server_errors reporting in headless stream-json mode. v2.1.220 (July 25, 2026) followed with bug fixes and reliability improvements.

Why it matters

Tightens sandbox network controls and expands nested subagent workflows, both relevant to teams running Claude Code in automated/CI pipelines.

Importance: 2/5

Routine but substantive minor-version updates to a widely used coding agent.

claude-code release mcp coding-agent

Sources

official Claude Code changelog

official Claude Code releases