v2.1.117

Source: Anthropic Claude Code Date: 2026-04-22 URL: https://github.com/anthropics/claude-code/releases/tag/v2.1.117

Summary

Substantive feature release across agent infrastructure, plugin management, and CLI UX. Highlights: forked subagents now configurable on external builds, /model selections persist across restarts, /resume now offers to summarize stale large sessions, concurrent MCP connections default on, glob/grep tools replaced with embedded bfs/ugrep binaries for speed, and Pro/Max subscribers on Opus/Sonnet 4.6 default to high effort. Twelve bug fixes including OAuth mid-session expiry, WebFetch hanging on large pages, and inflated context percentages for Opus 4.7.

Implications

This release touches more surfaces than a typical patch: effort-level defaulting, MCP concurrency, native binary search tools, plugin marketplace enforcement, and OpenTelemetry enrichment are all shipping together. The bfs/ugrep swap (macOS/Linux native binaries) signals Anthropic is optimizing the CLI’s own performance footprint, not just model throughput. The Bedrock Opus 4.7 thinking-disabled 400-error fix and inflated-context-percentage fix suggest Opus 4.7 integration had rough edges that are being sanded in rapid succession. Cadence: this is a feature-dense patch in the 2.1.x line — Anthropic is shipping substantive CLI improvements at weekly or sub-weekly frequency.