Claude Code Adds /claude-api latency-optimize to Speed Up Your Claude API Code

Claude CodeView original changelog

Claude Code 2.1.319 adds /claude-api latency-optimize. It finds where code that calls the Claude API makes people wait and tries faster settings against the user's own eval. The same release also updates the /claude-api managed-agents-onboard templates.

Key Takeaways

  • /claude-api latency-optimize targets where API code makes people wait.
  • It tries faster settings against the user's own eval, per the release notes.
  • It extends the built-in /claude-api skill, alongside migration helpers.
  • The managed-agents-onboard templates now mirror the Console.
  • Web search and fetch are turned off in five templates whose prompts do not use them.
  • The Performance tuner template is removed.

A New /claude-api Task

Claude Code 2.1.319 adds /claude-api latency-optimize. The release notes describe it as finding where a project's Claude API code makes people wait, and trying faster settings against the user's own eval.

Fits the Existing /claude-api Skill

The built-in /claude-api skill already covers other API chores, such as the api-version migration added in October. This adds latency tuning to that set. Eval-backed testing means a faster setting is checked against the user's own measure of quality, per the release notes.

Managed Agents Templates

The release also updates the /claude-api managed-agents-onboard templates to match the Claude Console. It removes the Performance tuner, renames two templates, and turns off web search and fetch in five whose prompts do not use them. A separate fix corrects the skill's statement that Console web settings do not apply to Managed Agents sessions.

Claude Code /claude-api latency-optimize Command | Yet Another Changelog