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mcp-test-harness-fastmcp

FastMCP servers testing helpers for MCP Test Harness.

Author: Vaquar Khan -- https://github.com/vaquarkhan

Install

pip install mcp-test-harness-fastmcp

This automatically installs mcp-test-harness as a dependency.

Usage

from mcp_test_harness_fastmcp import assert_fastmcp_tool, assert_fastmcp_resource

async def test_echo(mcp_server):
    await assert_fastmcp_tool(mcp_server, "echo", {"message": "hi"}, expected_text="hi")

async def test_config(mcp_server):
    await assert_fastmcp_resource(mcp_server, "config://app", expected_text='{"debug": true}')

Helpers

  • Tool call assertion with optional text check
  • MCP tool → FastMCP schema converter
  • mcp-test.yaml-shaped config builder

License

Non-commercial use only with mandatory attribution. See LICENSE.

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