@anthropic-ai/claude-code

Claude Code CLI & MCP Server by Anthropic

Use Claude, Anthropic's AI assistant, right from your terminal. Claude can understand your codebase, edit files, run terminal commands, and handle entire workflows for you.

Live Registry Versionv2.1.310Previous: v2.1.309Published 2026-10-23

Stability Grade

C+ (70/100)

90-Day Velocity

78 releases

High release cadence

Dependencies

0 direct

NPM manifest

License

SEE LICENSE IN README.md

Verified on NPM

Recommended Exact Pin: npx -y @anthropic-ai/claude-code@2.1.310

NPM Registry ->GitHub Repo ->

TL;DR Verdict & Quick Citation Summary (2026-10-24)Source: AgentBreakWatch Live NPM Index

Claude Code CLI & MCP Server (@anthropic-ai/claude-code) is currently at v2.1.310 on NPM (published 2026-10-23), with a 90-day stability score of 70/100 (C+) and HIGH schema drift risk across 78 releases in the past 90 days. v2.1.x updates `claude mcp serve` tool schemas and `.mcp.json` project-scoped server approval rules. Production teams should pin npx -y @anthropic-ai/claude-code@2.1.310 rather than using unpinned @latest tags.

Breaking Changes & Tool Schema Drift Analysis

v2.1.x updates `claude mcp serve` tool schemas and `.mcp.json` project-scoped server approval rules.

Watched Exports / MCP Tool Signatures:

claude mcp addclaude mcp serveBashEdit

Before (Deprecated / Unpinned Pattern)

claude mcp add my-server -e KEY=val -- npx server

After (Verified v2.1.310 Pattern)

claude mcp add --transport stdio my-server -e KEY=val -- npx server

Frequently Asked Questions: @anthropic-ai/claude-code

What is the latest version of @anthropic-ai/claude-code on NPM?

As of 2026-10-24, the latest stable version of @anthropic-ai/claude-code (Claude Code CLI & MCP Server by Anthropic) on NPM is v2.1.310, published on 2026-10-23. It has shipped 78 releases in the last 90 days.

Does @anthropic-ai/claude-code v2.1.310 have breaking changes or MCP schema drift risk?

@anthropic-ai/claude-code currently carries a HIGH schema drift risk rating with a Stability Score of 70/100 (Grade C+). v2.1.x updates `claude mcp serve` tool schemas and `.mcp.json` project-scoped server approval rules.

How do I safely pin @anthropic-ai/claude-code in production?

Avoid unpinned @latest tags in production agent configs. Pin the exact verified version using `npx -y @anthropic-ai/claude-code@2.1.310` and monitor claude mcp add, claude mcp serve, Bash, Edit for parameter or schema changes.

30-Min Registry & Schema Poller

Get Instant Breaking-Change Alerts for @anthropic-ai/claude-code

We poll NPM and anthropics/claude-code every 30 minutes. Get an email with the exact diff when @anthropic-ai/claude-code ships a breaking release beyond v2.1.310.