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mcp-csharp-test

Validate C# MCP server tool listing and invocation with unit and integration tests.

1|Updated May 21, 2026
Search Tags:#unit tests#testing#integration tests#mcp#c##xunit#llm evaluations
One-click install
npx skills add https://github.com/1k-off/umbraco-observability-playground --skill mcp-csharp-test-1k-off
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: mcp-csharp-test
Source: https://github.com/1k-off/umbraco-observability-playground/tree/main/.agents/skills/mcp-csharp-test
Command: npx skills add https://github.com/1k-off/umbraco-observability-playground --skill mcp-csharp-test-1k-off

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

It eliminates uncertainty in whether a C# MCP server correctly lists tools and returns correct results by validating behavior from individual tool methods to full MCP protocol flows.

Core Features & Use Cases

  • Unit test tool methods: Validate tool behavior with fast, isolated tests using mocked dependencies and edge-case inputs.
  • Integration test MCP protocol: Exercise initialize, tool listing, and tool invocation through an in-memory MCP client/server transport (and optionally via HTTP patterns).
  • Create evaluations for tool quality: Design deterministic, read-only question sets that measure how an LLM uses the server’s tools without modifying data.

Use case example: verifying that an MCP server’s echo and any HTTP-backed tools return expected content blocks when called via MCP, and that evaluations remain deterministic and verifiable.

Quick Start

Use the skill to create an xUnit test project that references the MCP server project, then implement unit tests for each tool and add an integration test that initializes the MCP session and calls representative tools via the MCP client.

Frequently Asked Questions about mcp-csharp-test

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I write integration tests for a C# MCP server?▼

You can test MCP server tool methods in isolation by creating unit tests with mocked dependencies and edge-case inputs. This validates isolated tool logic quickly without needing a full server transport.

How do I create LLM evaluations for MCP server tools?▼

Create LLM evaluations for MCP server tools by designing deterministic, read-only question sets that measure how the LLM uses the server's tools. These evaluations verify tool listing and invocation results without modifying data.

Do I need xUnit to test C# MCP servers?▼

An MCP SDK client is required within your .NET test project to initialize the MCP session and call representative tools. It enables both in-memory server testing and HTTP server testing patterns for thorough validation.

What is the best way to verify MCP server tool invocation results?▼

The best way to verify MCP server tool invocation results is by running automated integration tests that initialize the MCP session and call tools via the MCP client. This confirms that tools return expected content blocks across full protocol interactions.

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