[Bug] /loop slash command not recognized in v2.1.71

[byosamah]

Bug Description
Bug Report: /loop slash command not recognized in v2.1.71

Version: 2.1.71 (Claude Code)
Platform: macOS (Darwin 25.4.0, arm64)
Installation: Standalone binary (~/.local/share/claude/versions/2.1.71)

Problem

The /loop slash command, introduced in the https://code.claude.com/docs/en/changelog, is not recognized. Typing /loop returns:

Unknown skill: loop

Steps to Reproduce

1. Install or update to Claude Code v2.1.71
2. Start an interactive session: claude
3. Type /loop 1m say hello
4. Observe: "Unknown skill: loop"

Expected Behavior

Per the changelog: "/loop command runs a prompt or slash command on a recurring interval (e.g. /loop 5m check the deploy)"

Workaround

The underlying CronCreate tool works correctly and achieves the same functionality:

• CronCreate with cron expression */5 * * * * and a prompt successfully schedules recurring jobs
• CronList and CronDelete also work as expected
• Jobs fire when REPL is idle, auto-expire after 3 days

Analysis

The cron scheduling infrastructure is fully functional — only the /loop slash command surface is broken. Likely either:

• /loop is behind a feature flag not yet enabled for all users
• The slash command registration is missing despite the underlying tools being available
• A rollout issue where the changelog shipped ahead of the feature

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.71
• Feedback ID: 2d608ae8-73a5-48c2-a784-c06e9d21d99a

Errors

[{"error":"Error: ripgrep exited with code null\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:104:18189)\n    at emit (node:events:98:22)\n    at #maybeClose (node:child_process:766:16)\n    at #handleOnExit (node:child_process:520:72)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-07T07:20:06.822Z"},{"error":"RipgrepTimeoutError: Ripgrep search timed out after 20 seconds. The search may have matched files but did not complete in time. Try searching a more specific path or pattern.\n    at A (/$bunfs/root/src/entrypoints/cli.js:106:220)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:106:434)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:104:18260)\n    at emit (node:events:98:22)\n    at #maybeClose (node:child_process:766:16)\n    at #handleOnExit (node:child_process:520:72)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-07T07:20:06.823Z"},{"error":"Error: ripgrep exited with code null\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:104:18189)\n    at emit (node:events:98:22)\n    at #maybeClose (node:child_process:766:16)\n    at #handleOnExit (node:child_process:520:72)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-07T07:20:07.095Z"},{"error":"RipgrepTimeoutError: Ripgrep search timed out after 20 seconds. The search may have matched files but did not complete in time. Try searching a more specific path or pattern.\n    at A (/$bunfs/root/src/entrypoints/cli.js:106:220)\n    at <anonymous> (/$bunfs/root…

Note: Content was truncated.

[boozedog]

I'm seeing same issue on macOS with v2.1.71 ... but my Claude Code does not have the underlying CronCreate tool in its toolset.

❯ Unknown skill: loop

❯ Use the CronCreate tool to schedule a recurring task:
- Cron expression: */5 * * * *
- Prompt: tell me the current time and say hello
- Make it recurring

⏺ It looks like you tried a /loop skill that doesn't exist, and there's a mention of a CronCreate tool which isn't available in my toolset.

[eguitarz]

I accidentally fixed it by

brew install sox

I had same issue /loop not found. so I decided to try /voice first.
And it mentions I need to install sox
so I did brew install sox
then, i can see /loop in command line.

[boozedog]

❯ Unknown skill: loop

❯ Unknown skill: voice

🤷‍♂️

[impxd]

+1

❯ Unknown skill: loop

[arjantop-cai]

I accidentally fixed it by

brew install sox

I had same issue /loop not found. so I decided to try /voice first. And it mentions I need to install sox so I did brew install sox then, i can see /loop in command line.

This also solved it for me, but I do not have access to /voice yet

[boozedog]

installing sox did not change anything for me

i still see brew install sox

i do have CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC enabled i wonder if that might be it

[nemoo]

unknown skill: loop

• maOS 26.3.1
• claude code v2.1.71
• Installation: Standalone binary

[xiangjianmeng]

let claude code get the two env var unset:
"DISABLE_TELEMETRY": "1",
"CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1",

[LQY-920]

Unknown skill: loop

[ChenReuven]

same issue (brew install sox dosnt help for me)