io.github.rog0x/schema MCP Server

This MCP server provides schema validation and generation tools for AI agents. It supports generating JSON Schema from sample JSON data, producing TypeScript types from JSON data or a JSON Schema, and validating data against a JSON Schema with detailed error messages. It is associated with MCP and developer tooling for JSON Schema workflows.

🛠️ Key Features

JSON Schema generation from sample JSON data
TypeScript type/interface generation from JSON data or JSON Schema
Schema validation with detailed error messages (including JSON path, expected type, actual value)
Topics include: ai-agents, claude, json-schema, mcp, model-context-protocol, typescript, validation, ai-tools

🚀 Use Cases

Generating schemas and TypeScript types for agent input/output
Validating agent-produced or agent-consumed data before use

⚡ Developer Benefits

Inferred types, required fields, and common formats (email, date, URI, UUID)
Enum detection from multiple examples
Supports nested objects, arrays, optional fields, enums, and union types

⚠️ Limitations

Only schema validation and generation tools are described (no other capabilities provided)

Tools

generate_json_schema

Generate a JSON Schema from sample JSON data. Infers types, required fields, formats (email, date, URI, UUID), and detects enum patterns from multiple examples.

generate_typescript

Generate TypeScript interfaces and types from JSON data or a JSON Schema. Handles nested objects, arrays, optional fields, enums, and union types.

validate_schema

Validate data against a JSON Schema with detailed error messages including JSON path, expected type, actual value, and the violated constraint keyword.

mock_from_schema

Generate realistic mock data from a JSON Schema. Smart field-name detection produces contextual values: email fields get valid emails, name fields get realistic names, phone fields get formatted numbers, etc.

diff_schemas

Compare two JSON Schemas to find added, removed, and changed fields. Identifies type changes, constraint changes, and classifies each difference as breaking or non-breaking for backwards compatibility analysis.

io.github.rog0x/schema