---
title: "Doctor: Version Compatibility: Overview"
description: "OrchestKit requires Claude Code >= 2.1.251."
canonical: "https://orchestkit.yonyon.ai/docs/reference/skills/doctor/references/version-compatibility/00-overview"
---

# Doctor: Version Compatibility: Overview

OrchestKit requires Claude Code >= 2.1.251.

> Part of the [Doctor](/docs/reference/skills/doctor) skill reference. The main page carries the skill itself; this page holds material that used to sit at the bottom of it.

### Version Compatibility

# CC Version Compatibility Matrix

## Overview

OrchestKit requires Claude Code >= 2.1.251. This matrix documents which CC features OrchestKit depends on and their minimum version requirements.

## Experimental skills

Skills that depend on a Claude Code Research Preview feature are marked with an
`experimental:` frontmatter block declaring the reason, expected GA window, and
exit criteria. Doctor should compute this list dynamically by scanning
`src/skills/*/SKILL.md` for frontmatter containing `experimental:` and report
any skills whose `exit-criteria` is missing or empty as a warning.

Current experimental skills (M139, snapshot — verify via dynamic scan):

_None._ `ork:agents-view` was removed in favor of the native `claude agents`
CLI (CC 2.1.139+) plus the parallel-primitives doc at
`docs/parallel-primitives.md`.

When a future skill depends on an unreleased CC feature, add it to this table
with its `exit-criteria` so doctor can warn about Research Preview surface
area. Remove the entry once the underlying CLI feature reaches GA and the
skill is no longer marked `experimental:` in its frontmatter.