Open sourceOpen-source releaseMLOps, Tooling & Infrastructure · Agents & Tool Use · Safety & Alignment1 source · Oct 20, 2026

anthropics/claude-code v2.1.305

Fixed every request failing on Vertex, Bedrock and other providers when the endpoint or a gateway rejects tool search, and behind gateways with ToolSearch disallowed or left out of --tools (a 2.1.304 regression): Claude Code now retries without it

Key points

  • Added sandbox.allowNestedUserNamespaces so sandboxed commands on Linux can create user namespaces (Chromium, rootless podman); this lets them get around the sandbox's file protections
  • Added CLAUDECODERETRYWATCHDOGUSAGELIMITRECHECKMS so unattended retry mode (CLAUDECODERETRYWATCHDOG) notices a usage limit that was lifted before its reset
  • Fixed Claude naming the wrong model for a subagent's work after the subagent switched to a fallback model
  • Fixed more cases of scheduled Cowork cloud sessions waiting five minutes for each subagent whose WebFetch needed a URL approval that nobody was there to give

Sources (1)

  • [1]anthropics/claude-code v2.1.305
    GitHub: anthropics/claude-code · Oct 20, 08:46 PM
    - Fixed every request failing on Vertex, Bedrock and other providers when the endpoint or a gateway rejects tool search, and behind gateways with ToolSearch disallowed or left out of `--tools` (a 2.1.304 regression): Claude Code now retries without it
    - Added `sandbox.allowNestedUserNamespaces` so sandboxed commands on Linux can create user namespaces (Chromium, rootless podman); this lets them get around the sandbox's file protections

Extractive summary: sentences quoted from the sources.

Before this

  1. Oct 20, 2026How Octave built a secure multi-tenant AI foundation on Amazon Bedrock
  2. Oct 20, 2026Discover tools at runtime with AWS Agent Registry
  3. Oct 20, 2026How Eon built multi-cloud investigation with an MCP Gateway on Amazon Bedrock AgentCore
  4. Oct 20, 2026Build a semantic layer for agentic AI on AWS with Denodo and Amazon Bedrock AgentCore
  5. Oct 20, 2026How I built my ‘everything’ app
  6. Oct 16, 2026anthropics/claude-code v2.1.302

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