Fix Codegen and Add MCPCode Generation#140
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Pull Request Overview
Introduces a new MCP code generator and NucliaDB sample, plus expands the OpenAPI generator and core HTTP support.
- Adds RestClient.Net.McpGenerator and CLI to generate MCP tools from OpenAPI and a full NucliaDB sample suite.
- Enhances core RestClient.Net with HEAD and OPTIONS support and refactors OpenAPI generator to a new API surface.
- Updates CI to enforce formatting, run tests, and Docker cleanup.
Reviewed Changes
Copilot reviewed 59 out of 66 changed files in this pull request and generated 8 comments.
Show a summary per file
| File | Description |
|---|---|
| RestClient.Net/HttpClientExtensions.cs | Adds HeadAsync and OptionsAsync HTTP methods. |
| RestClient.Net/HttpClientFactoryExtensions.cs | Adds CreateHead and CreateOptions factory delegates. |
| RestClient.Net.OpenApiGenerator/* | Significant refactor to parsing and generation APIs and packaging. |
| RestClient.Net.McpGenerator/* | New MCP tool/server generator and CLI. |
| Samples/NucliaDbClient/* | New sample with docker-compose, setup scripts, demo, tests, and MCP server. |
| Samples/RestClient.OpenApiGenerator.Sample.* | Updates to Async methods and records usage. |
| .github/workflows/pr-build.yml | CI changes: tool restore, formatting check, Docker verify/cleanup, mutation testing. |
| .config/dotnet-tools.json | Adds csharpier tool. |
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...piGenerator.Sample.JSONPlaceholder/RestClient.OpenApiGenerator.Sample.JSONPlaceholder.csproj
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Pull Request Overview
Copilot reviewed 58 out of 65 changed files in this pull request and generated 11 comments.
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...piGenerator.Sample.JSONPlaceholder/RestClient.OpenApiGenerator.Sample.JSONPlaceholder.csproj
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Pull Request Overview
Copilot reviewed 58 out of 65 changed files in this pull request and generated 13 comments.
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TLDR;
New code generator that creates MCP server tools from OpenAPI specs, plus comprehensive NucliaDB sample implementation demonstrating the full workflow from OpenAPI → RestClient.Net extensions → MCP tools.
Summary
This PR adds RestClient.Net.McpGenerator, a code generator that transforms OpenAPI specifications into Model Context Protocol (MCP) server tools. The generator builds on top of the existing OpenAPI → RestClient.Net extension methods, creating type-safe MCP tools that expose REST APIs to Claude and other LLM tools. Includes a complete reference implementation using the NucliaDB API with tests, demo, and working MCP server.
Details
New Components (36 new files, 64 total changed)
MCP Generator (
RestClient.Net.McpGenerator)McpToolGenerator.cs- Generates MCP tool classes wrapping RestClient.Net extensionsMcpServerGenerator.cs- Orchestrates OpenAPI → MCP tool code generationNucliaDB Sample Suite (
Samples/NucliaDbClient*)Core Library Enhancements
CreateOptionsdelegates)Infrastructure
Key Features
IHttpClientFactorypattern (no socket exhaustion)