# MCP Testing Frameworks

> Automated testing strategies for verifying MCP server logic and tool integration.

- Skill: `jcorpac/mcp-testing-frameworks` (Agent Skill)
- Install (CLI): `npx skillmds@latest add jcorpac/mcp-testing-frameworks`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jcorpac/mcp-testing-frameworks/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: jcorpac (https://skillmd.com/u/jcorpac)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/jcorpac/mcp-testing-frameworks

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# MCP Testing Frameworks

Testing MCP servers requires verifying both the logic and the protocol adherence.

## Testing Layers
1.  **Unit Tests**: Testing the underlying Python functions independently of MCP.
2.  **Integration Tests**: Mocking the MCP Client to verify that tools respond correctly over the protocol.
3.  **E2E Tests**: Running the server in a real environment (e.g., Claude Desktop) and verifying behavior.

## Tools
- **`pytest`**: The standard for Python testing.
- **MCP Python SDK Test Utilities**: Helper classes for simulating client interactions.

## Best Practices
- **Schema Validation**: Verify that the generated JSON Schema matches expectations.
- **Edge Cases**: Test tools with empty, invalid, and large inputs.