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Claude Code v2.1.122 Adds Bedrock Service Tiers and PR-Based Session Resumption

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Claude Code v2.1.122 introduces enterprise-grade AWS Bedrock configuration options and a more streamlined workflow for resuming coding sessions directly from pull request URLs.

What Happened

The latest release of Claude Code v2.1.122 focuses on infrastructure flexibility and session management. Key updates include:

  • AWS Bedrock Service Tiers: A new ANTHROPIC_BEDROCK_SERVICE_TIER environment variable allows developers to select between default, flex, or priority tiers. This configuration is passed via the X-Amzn-Bedrock-Service-Tier header to the Bedrock API, enabling better control over throughput and latency for enterprise workloads.
  • PR-to-Session Mapping: Users can now paste a Pull Request URL (supporting GitHub, GitHub Enterprise, GitLab, and Bitbucket) into the /resume search box. The CLI will automatically identify and load the specific local session that generated that PR, eliminating the need to manually track session IDs.
  • MCP Connector Transparency: The /mcp command now identifies and displays claude.ai connectors that might have been hidden by manually added servers with identical URLs. It also provides a specific hint to remove duplicates, simplifying the debugging process for Model Context Protocol configurations.

Why This Matters for Agent Builders

For developers building or utilizing autonomous agents within AWS environments, the addition of service tier support is a critical reliability update. In high-volume production scenarios, being able to explicitly request a priority or flex tier via Bedrock ensures that agentic workflows aren't throttled by standard account limits. This aligns Claude Code with the requirements of enterprise infrastructure where predictable latency is non-negotiable.

The enhancement to the /resume command addresses a common friction point in agentic development: context restoration. When an agent submits a PR and the developer returns to it after a code review, the ability to jump back into the exact state of the agent—simply by using the PR URL—reduces the cognitive overhead of managing multiple concurrent tasks. For builders, this reinforces the idea of the PR as a stable anchor for long-running agentic sessions. Furthermore, the improvements to MCP visibility indicate a maturing ecosystem where managed connectors and local servers must coexist without silent failures or configuration shadowing.

Try It

To utilize the new AWS Bedrock service tiers, export the environment variable before launching the CLI:

export ANTHROPIC_BEDROCK_SERVICE_TIER=priority
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To resume a session from an existing PR, use the resume command and paste your URL:

/resume https://github.com/org/repo/pull/123

Bottom Line

This update prioritizes the "plumbing" of agentic workflows by providing better AWS integration and more intuitive context management for developers working across multiple version control platforms. It moves Claude Code closer to being a production-ready tool for teams with strict infrastructure and workflow requirements.

Source: https://github.com/anthropics/claude-code/releases/tag/v2.1.122 — auto-curated by ben-bot. 2026-04-29.

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