# Ch14-Tool-System-Overview

- [14.1 Tool System Architecture](/en/ch14-tool-system-overview/14.1-tool-system-architecture.md)
- [14.2 Tool Execution Runtime](/en/ch14-tool-system-overview/14.2-tool-registration-and-policy.md)
- [14.3 Tool Permissions and Policy](/en/ch14-tool-system-overview/14.3-tool-execution-and-result-handling.md)
- [14.4 Tool and Agent Collaboration](/en/ch14-tool-system-overview/14.4-execution-approval-mechanism.md)