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Claude Code v2.1.122: ANTHROPIC_BEDROCK_SERVICE_TIER selects flex/priority on Bedrock, /resume finds the session that created a PR via URL paste (GitHub/GitLab/Bitbucket), /mcp surfaces connectors hidden by manually-added duplicates, OTEL emits numeric attrs as numbers and adds an at_mention event, and image resize is corrected from 2576px back to the documented 2000px cap.
Polish release with five real wins for advanced users. ANTHROPIC_BEDROCK_SERVICE_TIER lets you pick default, flex, or priority on Bedrock — the value flows through as the X-Amzn-Bedrock-Service-Tier header. Pasting a PR URL into /resume now finds the session that created that PR (GitHub, GitHub Enterprise, GitLab, Bitbucket). /mcp exposes claude.ai connectors hidden by a manually-added MCP server with the same URL — a previously silent failure mode. OpenTelemetry numeric attributes on api_request/api_error now emit as numbers (not strings), and there's a new claude_code.at_mention log event. And images sent to newer models are now resized to the documented 2000px cap, not 2576px.
Why: Bedrock customers had no way to opt into the flex or priority service tiers from Claude Code — the tier was effectively pinned to default.
What: Adds ANTHROPIC_BEDROCK_SERVICE_TIER env var (values: default, flex, priority); sent as the X-Amzn-Bedrock-Service-Tier header on every Bedrock request.
How: export ANTHROPIC_BEDROCK_SERVICE_TIER=priority before launching Claude Code; verify in Bedrock CloudWatch metrics.
Why: Engineers wanted to revisit the Claude Code session that had created a given PR but had to remember the session by approximate date — there was no PR-aware lookup.
What: Pasting a GitHub, GitHub Enterprise, GitLab, or Bitbucket PR URL into the /resume search box now finds the session that created that PR.
How: Run /resume, paste the PR URL into the search field; the matching session surfaces directly.
Why: A claude.ai connector and a manually-added MCP server pointing at the same upstream URL silently shadowed each other.
What: /mcp now shows claude.ai connectors hidden by a manually-added server with the same URL, with a hint to remove the duplicate.
How: Run /mcp; duplicate connectors are flagged inline — remove the manual server or the connector to resolve.
Why: Numeric attributes on api_request and api_error log events arrived as strings, breaking downstream OTEL pipelines that expected typed numbers; and @-mention resolution was invisible to telemetry.
What: OpenTelemetry now emits numeric attributes on api_request and api_error events as numbers, and adds a new claude_code.at_mention log event for @-mention resolution.
How: Automatic — your existing OTEL exporter receives correctly-typed numerics and the new event without configuration.
Why: Newer-model image inputs were being resized to 2576 pixels per side instead of the documented 2000-pixel maximum.
What: Fixes images sent to newer models being resized to 2576px per side instead of the correct 2000px maximum.
How: Automatic on upgrade — image resize behavior matches the documented 2000px cap.
Hosts: Alex Chen & Sarah Kim · Generated from the official Claude Code CHANGELOG.
Full changelog: github.com/anthropics/claude-code/CHANGELOG.md
Claude Code docs: code.claude.com/docs
Each episode breaks down the latest release notes from AI frontier labs, so you know exactly what changed and why it matters for your workflow.
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