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Claude Code v2.1.202 shipped July 7, 2026. Two changes matter for anyone running dynamic workflows or relying on the /review command. The rest is reliability fixes.

Dynamic Workflow Size Control

Claude Code’s dynamic workflow feature — where Claude writes and executes a JavaScript orchestration script spawning dozens to hundreds of subagents — is now configurable. A new setting in /config lets you tell Claude how large to build those workflows.

The setting is called workflow size and has three values: small, medium, and large.

  • Small — Claude constructs compact workflows with fewer parallel agents. Lower cost, lower concurrency, lower wall-clock gains. Right for exploratory or low-priority tasks where you want predictable spend.
  • Medium — the previous implicit default; Claude sizes the fleet to the task.
  • Large — Claude builds the full-scale parallel fleet when the task warrants it. Maximum speed, maximum cost.

To set it:

/config workflowSize=small

Or via .claude.json:

{
  "workflowSize": "medium"
}

Why this matters: Until now, dynamic workflow cost was largely opaque. Claude decided agent count based on what it thought the task needed, with no explicit governor beyond the 1,000-agent hard cap. For teams running dynamic workflows on cost-sensitive tasks — a full-codebase review, a multi-file refactor — the fleet could grow larger than useful. workflowSize=small gives you a brake without disabling the feature.

This is especially relevant after last week’s v2.1.200 change making Manual permission mode the default: more workflows are now running in a more constrained mode. Pairing workflowSize with your permission mode setting gives you two levers instead of one.

/review Is Single-Pass Again

Context for anyone who saw /review get expensive:

In recent Claude Code versions, /review evolved toward multi-agent analysis — spawning parallel reviewers across dimensions before synthesizing findings. That made it more thorough but also slower and more expensive than many users expected when they typed /review for a quick check.

In v2.1.202, /review is restored to a fast single-pass operation. You get a review response, not a multi-agent report.

Multi-agent code review now lives at /code-review. If you want the parallel-agent analysis with adversarial verification across dimensions, /code-review is the command. /review <PR#> is the quick read.

Migration if you’ve adapted to multi-agent /review:

Old New
/review (multi-agent) /code-review
/review <PR#> /review <PR#> (unchanged — now single-pass again)

The distinction matters for cost estimation. A /code-review run spawns multiple agents; plan accordingly. A /review run is a single call.

OpenTelemetry Tracking for Workflow Runs

Dynamic workflows now emit two new OpenTelemetry attributes:

  • workflow.run_id — a unique identifier for the workflow run
  • workflow.name — the name from the workflow script’s meta.name field

If you’re already wiring Claude Code activity into an OTel pipeline, these attributes let you reconstruct what workflow generated what agent activity — previously, individual agent spans weren’t easily associated back to the parent workflow run that spawned them.

For teams using Claude Code at scale with observability tooling (Datadog, Honeycomb, Grafana), this closes a gap where you could see the agents but not what orchestrated them.

Other Changes Worth Noting

  • SSH sign-in URLs now print as single clickable hyperlinks, even when the terminal is running over SSH with line-wrap. Previously the URL would break across lines and require manual reconstruction.
  • /workflows agent list — the interface is redesigned with wider title display and dedicated columns for time tracking. Easier to read when you have many concurrent agents.
  • MCP error hints — when an MCP server connection fails, Claude Code now suggests checking whether the server config needs "type": "http". If you’ve hit mysterious MCP connection errors, update and see if the new error message points to the config issue.
  • Remote Control — images and files sent from Remote Control apps no longer drop silently; commands execute properly in interactive sessions.
  • Voice dictation no longer retries unboundedly on device failures — previously a failed voice device could loop retries until you killed the session.

Upgrade

npm update -g @anthropic-ai/claude-code

The workflowSize setting and OTel attributes are live as of v2.1.202. The /review single-pass behavior is immediate on upgrade.

Part of the Builder’s Log — tracking what changes and what it means if you’re shipping.

Related: Claude Code Week 28: Background Agents Go Autonomous, Chrome GA, and Permission Mode Breaking Change · Claude Code Week 27: Sonnet 5 Default, MCP Security Fix, and Org Model Control