mcp-test-harness-langchain

LangChain MCP tools testing helpers for MCP Test Harness.

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

Install

pip install mcp-test-harness-langchain

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

Usage

from mcp_test_harness_langchain import assert_langchain_tool, mcp_tools_to_langchain_tools, create_langchain_test_config

async def test_tool(mcp_server):
    await assert_langchain_tool(mcp_server, "my_tool", {}, expected_text="ok")

def test_schema_bridge(mcp_tools):
    # mcp_tools from list_tools — convert for LangChain SDKs
    return mcp_tools_to_langchain_tools(mcp_tools)

cfg = create_langchain_test_config("python server.py", timeout=45)

Helpers

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

License

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

Development Status
- 5 - Production/Stable
Intended Audience
- Developers
Programming Language
- Python :: 3
Topic
- Software Development :: Testing

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

mcp_test_harness_langchain-4.0.0.tar.gz (2.8 kB view details)

Uploaded Aug 2, 2026 Source

Built Distribution

If you're not sure about the file name format, learn more about wheel file names.

The dropdown lists show the available interpreters, ABIs, and platforms. Enable javascript to be able to filter the list of wheel files.

mcp_test_harness_langchain-4.0.0-py3-none-any.whl (3.1 kB view details)

Uploaded Aug 2, 2026 Python 3

File details

Details for the file mcp_test_harness_langchain-4.0.0.tar.gz.

File metadata

Download URL: mcp_test_harness_langchain-4.0.0.tar.gz
Upload date: Aug 2, 2026
Size: 2.8 kB
Tags: Source
Uploaded using Trusted Publishing? Yes
Uploaded via: twine/7.0.0 CPython/3.13.14

File hashes

Hashes for mcp_test_harness_langchain-4.0.0.tar.gz
Algorithm	Hash digest
SHA256	`d0eeaef5e255a8510c5769a0b8cdea5470d5a9ceafa26ab7a4800cb09e5c3787`
MD5	`4b67d71a3100e011fb991554ae703433`
BLAKE2b-256	`cbb461f0bfc3cf1665b96b6f9c81e9c4fff64526c9eb45631d8ce2c795243092`

See more details on using hashes here.

Provenance

The following attestation bundles were made for mcp_test_harness_langchain-4.0.0.tar.gz:

Publisher: publish-packages.yml on vaquarkhan/mcp-test-harness

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
- Subject name: mcp_test_harness_langchain-4.0.0.tar.gz
- Subject digest: d0eeaef5e255a8510c5769a0b8cdea5470d5a9ceafa26ab7a4800cb09e5c3787
- Sigstore transparency entry: 2320694299
- Sigstore integration time: Aug 2, 2026
Source repository:
- Permalink: vaquarkhan/mcp-test-harness@3dd087b79979581c35e32ff3b6e5d59ee3bb5532
- Branch / Tag: refs/heads/main
- Owner: https://github.com/vaquarkhan
- Access: public
Publication detail:
- Token Issuer: https://token.actions.githubusercontent.com
- Runner Environment: github-hosted
- Publication workflow: publish-packages.yml@3dd087b79979581c35e32ff3b6e5d59ee3bb5532
- Trigger Event: workflow_dispatch