The recommended npm setup installs the reusable skill and MCP connection once for Codex, Cursor and Claude Code. Restart the selected agent after installation, then open a project and ask it to start Foundry. An installed connection and a listening agent are different readiness checks.
npx foundry-design installnpx foundry-design install --agent codex,cursor,claudeAlternative connection routes
Use the npm route until Foundry completes public marketplace review. It installs the same skill and MCP bridge across projects.
npx foundry-design install-agent codexInstall the shared Cursor connection, then run Foundry from each product repository to add its development adapter.
npx foundry-design install-agent cursorAdd the Foundry marketplace once, install the plugin, then reload plugins before opening the product project.
/plugin marketplace add seanx24x/foundry-design-control
/plugin install foundry-design-control@foundry-design-control
/reload-pluginsInstall the release bundle from Settings, Extensions, Advanced. New MCP tools become available in a new task.
Download the MCPB bundleAfter the shared connection exists, every project needs only its development adapter and local metadata. Foundry creates that lightweight connection automatically.
npx foundry-design connectProject-scoped connections remain available as an explicit compatibility option.
npx foundry-design setup --project-agent --agent codexClaude Desktop can also use Foundry through the validated MCPB extension. Install the extension from Claude Desktop settings, then use the normal Foundry command in each project to add the development adapter.