AdYour product here, seen by people installing AI tools every day Sponsor slots open: 12 of 12, from $249 a month

How to install Devharness in Claude Code

To install Devharness in Claude Code, run "claude mcp add devharness -- npx -y devharness" in your terminal, then check it with "claude mcp list". It takes about a minute.

Built from the published package · server updated 12 days ago

  1. 1

    Run the install command

    Open a terminal in your project and run:

    claude mcp add devharness -- npx -y devharness
  2. 2

    Choose where it applies (optional)

    Add --scope user to use it in every project, or --scope project to share it with your team through a .mcp.json file.

    claude mcp add --scope user devharness -- npx -y devharness
  3. 3

    Check that it is connected

    List your servers, or type /mcp inside a Claude Code session to see its status and tools.

    claude mcp list

MCP servers run with your permissions. If Devharness needs an API key, add it under env in the config. Check its README.

Install Devharness in another app

Similar servers

Questions

Does Devharness work in Claude Code?

Yes. Claude Code supports mcp servers (local and remote), skills and plugins, and Devharness installs with the steps above.

Devharness does not show up in Claude Code. What now?

Restart Claude Code fully, check the JSON is valid, and make sure Node.js (for npx) is installed. See common MCP errors and fixes.

Is Devharness safe?

It scores 80 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.