feat: implement code mode

[mKeRix]

This implements the base architecture of toolscript - the basic commands and scaffolding needed to use MCP tools as "toolscript" (aka code mode).

[gemini-code-assist]

Summary of Changes

Hello @mKeRix, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request establishes the core framework for 'toolscript', a powerful new system designed to bridge TypeScript code with Model Context Protocol (MCP) tools. It provides a robust CLI for managing a central gateway, which aggregates MCP servers and dynamically generates type-safe client code. The execution environment is securely sandboxed using Deno, and seamless integration with Claude Code is achieved through dedicated plugin hooks and skills. This foundational work lays the groundwork for highly interactive and secure programmatic interaction with MCP services.

Highlights

• Core Architecture Implementation: This pull request introduces the foundational architecture for 'toolscript', a Deno-native CLI tool and Claude Code plugin. It enables the execution of TypeScript code to interact with Model Context Protocol (MCP) tools, focusing on type safety and sandboxed execution.
• Comprehensive CLI Tooling: A full-featured Command Line Interface (CLI) has been implemented, providing commands for gateway management (start, status), tool discovery (list-servers, list-tools, get-types), and toolscript execution (exec inline code or from file).
• Type-Safe MCP Access: The system now automatically generates TypeScript types from MCP tool schemas using json-schema-to-typescript. These types are served via an HTTP endpoint, allowing toolscripts to import and use MCP tools with full compile-time type safety.
• Secure Sandboxed Execution: Toolscripts are executed within a restricted Deno sandbox, limiting network access exclusively to the toolscript gateway and denying file system access, enhancing security and isolation.
• Claude Code Plugin Integration: Initial integration as a Claude Code plugin is complete, including SessionStart/SessionEnd hooks to manage the gateway lifecycle and a dedicated 'toolscript' skill for LLMs to interact with MCP tools effectively.
• Detailed Documentation: Extensive documentation has been added, covering the project's architecture, security model, quick start guides, configuration, and examples, ensuring clarity for users and developers.

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[gemini-code-assist]

Code Review

This pull request lays a very solid foundation for toolscript. The architecture is well-thought-out, with clear separation of concerns between the CLI, gateway, execution sandbox, and type generation. The use of Deno's features like the permission model for sandboxing and native tooling is excellent. The code is generally of high quality, with good practices like strict TypeScript, custom error types, and a robust configuration loader. The testing strategy is particularly impressive, with a comprehensive suite of unit, integration, and end-to-end tests.

My review includes a few suggestions for improvement, mainly around robustness and efficiency. For instance, I've suggested removing a Python dependency from a shell script in favor of a Deno-native solution, improving resource cleanup in the sandbox, and making a CLI command more efficient by adding server-side filtering.

One minor point on project maintenance: the deno.lock file appears to contain some outdated entries. It might be beneficial to run deno cache --reload and commit the updated lock file to ensure it only contains currently used dependencies.

Overall, this is an excellent start for the project.

[codecov-commenter]

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[github-actions]

🎉 This PR is included in version 1.0.0 🎉

The release is available on:

• JSR.io
• GitHub release

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