Daily AI Builder Brief - May 2, 2026

Executive Summary

Claude Code 2.1.126 released May 1 with claude project purge, gateway-aware /model, and OAuth code paste for WSL2, SSH, and containers.
Claude Security entered public beta for Enterprise plans, powered by Opus 4.7, scanning codebases and generating patches.
Anthropic Developer Platform retired the 1M context beta on Sonnet 4.5 and Sonnet 4. Sonnet 4.6 and Opus 4.6 now carry 1M context at GA pricing with no beta header.
MCP experimental-ext-variants shipped a multi-language reference implementation of SEP-2053.
MCP Python SDK and Inspector refreshed May 1; Ruby SDK refreshed May 2.
Claude Code Windows hardening: clipboard writes no longer expose content via process arguments, and allowManagedDomainsOnly is now honored across all config priorities.

Claude Code

v2.1.126 release (May 1)

/model reads your gateway's /v1/models endpoint when ANTHROPIC_BASE_URL points to a compatible gateway. claude project purge [path] wipes transcripts, tasks, file history, and config with --dry-run, -y, -i, and --all. OAuth login accepts pasted codes when the browser callback can't reach localhost. OpenTelemetry claude_code.skill_activated now carries invocation_trigger (user-slash, claude-proactive, nested-skill). Stream idle timeout fixed for long thinking pauses on remote sessions. Changelog

Anthropic

Claude Security public beta (May 1)

Standalone defensive product for Enterprise plans on Opus 4.7. Scans codebases for vulnerabilities and generates patches. Tech partners include CrowdStrike, Microsoft Security, Palo Alto Networks, SentinelOne, and Wiz. Services partners: Accenture, BCG, Deloitte, Infosys, PwC. Announcement

1M context GA shift (May 1)

The 1M token beta is gone for Sonnet 4.5 and Sonnet 4. Migrate to Sonnet 4.6 or Opus 4.6 where 1M context is GA at standard pricing, no beta header required. Release notes

MCP Ecosystem

Variants reference implementation (May 1)

experimental-ext-variants published a multi-language reference impl of SEP-2053. Tasks primitive (SEP-1686) lifecycle work continues on retry semantics and result expiry policies. MCP GitHub

SDK and tooling refresh

Python SDK and Inspector refreshed May 1; Ruby SDK refreshed May 2. Streamable HTTP scaling work continues per the 2026 roadmap: stateful sessions vs. load balancers, registry discovery without connection. 2026 roadmap

Broader AI

Nothing today.

What This Means For Builders

WSL2, SSH, and container users: the OAuth paste flow kills the localhost callback hack you've been carrying.
On Sonnet 4.5 with 1M context beta headers? Migrate to Sonnet 4.6 or Opus 4.6 this week before the beta path degrades.
Shipping MCP servers? Track SEP-2053 variants and the Tasks lifecycle gaps; both shape multi-tenant remote MCP behavior at scale.
claude project purge means you can hand a clean Claude Code state to a new contributor or wipe a repo's local history without surgery.