CC-AG-020: Reserved Colon in Agent Name - Claude Agents

Summary

• Rule ID: CC-AG-020
• Severity: HIGH
• Category: Claude Agents
• Normative Level: MUST
• Auto-Fix: No
• Verified On: 2026-07-26

Applicability

• Tool: claude-code
• Version Range: >=2.1.218
• Spec Revision: unspecified

Evidence Sources

• https://github.com/anthropics/claude-code/releases/tag/v2.1.218
• https://code.claude.com/docs/en/sub-agents

Test Coverage Metadata

• Unit tests: true
• Fixture tests: false
• E2E tests: false

Examples

The following examples demonstrate what triggers this rule and how to fix it.

Invalid

---
name: plugin:reviewer
description: Reviews code
---
Review the change.

Valid

---
name: reviewer
description: Reviews code
---
Review the change.