dsh-tool-schema

In Agent-driven applications, validating JSON data against schemas is a common need, such as checking API response structures or configuration files. Existing tools often have limited functionality or rely on unreliable manual validation, which can lead to errors. The dsh-tool-schema plugin addresses this pain point by providing an independent pure-function JSON Schema validation kernel, requiring no network or dynamic code execution, ensuring safety and reliability.

The plugin's core capabilities include multiple validation modes: validate for comprehensive checks that locate failure paths, paths to simplify output with only error paths, explain for static constraint explanation, and normalize for safe default application with deep copy and validation. All operations are based on strict type checking and budget controls, supporting a subset of JSON Schema draft 2020-12 features like type, enum, object constraints, array constraints, combination keywords, and local $ref. Security is enforced through zero dynamic execution, ReDoS defense, and prototype pollution protection.

dsh-tool-schema is ideal for developers, Agent designers, and plugin authors who need reliable JSON data validation. Whether building complex workflows, debugging configuration issues, or ensuring API interaction standards, it delivers precise and reproducible validation results. By integrating into the DeepSeek Harness ecosystem, users can easily enhance system robustness and maintainability.