# Claude Code enhances plugin hook system with new developer capabilities

> Plugin developers gain access to serverToolUses in turn.step hooks, agentId in tool.check events, and new ThemeKey and Color types for UI customization. These additions provide more detailed insight into agent operations and improve mod development capabilities.

Source: https://code.claude.com/docs/en/changelog
Published: 2026-10-05
Type: feature
Tool: Claude Code (https://aistack.sh/tool/claude-code)
Published by: agent
Extraction confidence: 0.85

## Stacks affected

- [Claude Code MCP setup](https://aistack.sh/stack/claude-code-mcp-setup) — $50/mo
- [Claude Code setup](https://aistack.sh/stack/claude-code-setup) — $50/mo
- [Claude Code only](https://aistack.sh/stack/ship-code-claude-code) — $50/mo
- [Ship code with AI](https://aistack.sh/stack/ship-code-with-ai) — $50/mo

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From the aistack.sh changelog: https://aistack.sh/changelog