feat(mcp): convert TypeScript classes to MCP tools.

[samchon]

This pull request introduces a new MCP integration package for typia, enabling seamless registration of both TypeScript class-based and OpenAPI-based LLM function controllers as MCP tools. The changes provide robust validation feedback for LLM function calls, simplify controller creation, and ensure compatibility with MCP servers. The most important changes are grouped below.

MCP Integration and Controller Registration

• Added new package @typia/mcp with configuration, dependencies, and build scripts, providing MCP integration for typia and supporting both class and HTTP controllers. (packages/mcp/package.json, packages/mcp/tsconfig.json, pnpm-lock.yaml) [1] [2] [3]
• Implemented registerMcpControllers function in packages/mcp/src/index.ts to register controllers as MCP tools and provide validation feedback for LLM function calls. (packages/mcp/src/index.ts)
• Added McpControllerRegistrar internal module to handle tool registration, tool call routing, validation, and integration with MCP server tool handlers. (packages/mcp/src/internal/McpControllerRegistrar.ts)

HTTP Controller and OpenAPI Support

• Introduced IHttpLlmController interface for HTTP-based LLM controllers, allowing OpenAPI operations to be registered as LLM function calling tools. (packages/interface/src/http/IHttpLlmController.ts, packages/interface/src/http/index.ts) [1] [2]
• Added HttpLlm.controller function to compose HTTP LLM controllers from OpenAPI documents, simplifying MCP tool registration for API endpoints. (packages/utils/src/http/HttpLlm.ts) [1] [2] [3] [4]

Documentation and Validation Feedback

• Improved documentation for ILlmController and IHttpLlmController, clarifying usage for class-based and OpenAPI-based controllers and their registration process. (packages/interface/src/schema/ILlmController.ts, packages/interface/src/http/IHttpLlmController.ts) [1] [2]
• Enhanced stringifyValidationFailure output to wrap annotated JSON in a markdown code block, making validation feedback clearer for LLM auto-correction. (packages/utils/src/utils/stringifyValidationFailure.ts)

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	zod-to-json-schema@​3.25.1
	@​modelcontextprotocol/​sdk@​1.26.0

View full report

[Copilot]

Pull request overview

Adds a new @typia/mcp package that registers typia LLM controllers (class-based and OpenAPI/HTTP-based) as MCP tools, with typia-powered argument validation feedback suitable for LLM auto-correction.

Changes:

• Introduces @typia/mcp with registerMcpControllers() and an internal registrar that wires MCP tools/list + tools/call.
• Adds IHttpLlmController and HttpLlm.controller() to treat OpenAPI operations as tool controllers.
• Updates stringifyValidationFailure() formatting to wrap annotated JSON output in Markdown code fences.

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
pnpm-lock.yaml	Adds dependency graph entries for the new MCP package and MCP SDK dependencies.
packages/utils/src/utils/stringifyValidationFailure.ts	Wrapes validation feedback in Markdown code blocks and improves output structure.
packages/utils/src/http/HttpLlm.ts	Adds HttpLlm.controller() and adjusts HttpLlm.application() typing.
packages/mcp/package.json	Defines the new @typia/mcp package metadata and dependencies.
packages/mcp/tsconfig.json	Adds TypeScript build configuration for the new package.
packages/mcp/src/index.ts	Exposes registerMcpControllers() public API.
packages/mcp/src/internal/McpControllerRegistrar.ts	Implements MCP tool registration/listing/calling and typia validation feedback.
packages/interface/src/http/IHttpLlmController.ts	Defines HTTP/OpenAPI controller shape for tool registration.
packages/interface/src/http/index.ts	Re-exports IHttpLlmController.
packages/interface/src/schema/ILlmController.ts	Updates documentation to include MCP registration examples.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported