AI Plugin Index
Devharness
Verified · npm:devharnessMCP server by InDate · updated · ★ 18 · 604 downloads a week
MCP server that connects AI assistants to Chrome DevTools Protocol for runtime debugging - set breakpoints, inspect variables, monitor network traffic, and automate browser interactions Devharness is published by npm:devharness from its verified domain in the official MCP Registry.
Last commit 11 days ago
MIT: permissive, fine for commercial use
Clear description, published package or server URL, original repository
Not checked yet. What we check
Install Devharness
Built from the published package, never by AIclaude mcp add devharness -- npx -y devharnessRun in your terminal. Add --scope user to use it in every project.
{
"mcpServers": {
"devharness": {
"command": "npx",
"args": [
"-y",
"devharness"
]
}
}
}Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.
{
"mcpServers": {
"devharness": {
"command": "npx",
"args": [
"-y",
"devharness"
]
}
}
}Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).
{
"servers": {
"devharness": {
"command": "npx",
"args": [
"-y",
"devharness"
]
}
}
}Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".
codex mcp add devharness -- npx -y devharness{
"mcpServers": {
"devharness": {
"command": "npx",
"args": [
"-y",
"devharness"
]
}
}
}Add to ~/.gemini/config/mcp_config.json (all projects) or .agents/mcp_config.json (this project).
gemini mcp add devharness npx -y devharnessGemini CLI was replaced by Antigravity CLI in June 2026 and remains only for enterprise licences and paid API keys.
MCP servers run with your permissions and can read what you give them access to. Some need an API key: check the README and add it under env in the devharness block.
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Devharness: common questions
How do I install Devharness?
In Claude Code run claude mcp add devharness -- npx -y devharness. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.
Is Devharness the official server?
Devharness is published by npm:devharness from its verified domain in the official MCP Registry.
Is Devharness free?
The code is published under the MIT licence. The service it connects to may have its own pricing.
Is Devharness safe to use?
It scores 80 of 100. Grades: maintenance A, licence A, quality C. The security check has not run for it yet. Review the code before you install. How grades work.
What are alternatives to Devharness?
Similar MCP servers: browser-use, Actionbook, Cline, Scrapling MCP Server.
Does Devharness work with ChatGPT?
Not directly. It runs locally, and ChatGPT only connects to remote servers with a URL. Use it in Claude Code, Claude Desktop, Cursor, VS Code or Codex.