Add a mcp.json config and configuring mcp servers for GitHub Primer and Playwright

[jonrohan]

Adding .vscode/mcp.json config to the repository with playwright, github, and primer mcp servers configured.

Rollout strategy

• Patch release
• Minor release
• Major release; if selected, include a written rollout or migration plan
• None; This has to do with dev experience more than the library

Merge checklist

• Added/updated tests
• Added/updated documentation
• Added/updated previews (Storybook)
• Changes are SSR compatible
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge
• (GitHub staff only) Integration tests pass at github/github-ui (Learn more about how to run integration tests)

[changeset-bot]

⚠️ No Changeset found

Latest commit: 414c23e

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[Copilot]

Pull request overview

Adds a VS Code MCP configuration to the repo to enable shared MCP server setup (GitHub Copilot MCP, Playwright MCP, and Primer MCP) as part of contributor dev experience, and updates gitignore so the config can be checked in.

Changes:

• Add .vscode/mcp.json defining MCP servers for github, playwright, and primer.
• Stop ignoring .vscode in .gitignore so the MCP config (and other workspace configs) can be committed.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 2 comments.

File	Description
.vscode/mcp.json	Introduces shared MCP server configuration for VS Code.
.gitignore	Removes .vscode from ignored paths to allow committing the MCP config.

[Copilot]

The playwright MCP server entry is missing a type field. Our own @primer/mcp README’s VS Code example config specifies type: "stdio" for command-based servers; without it, VS Code may not treat this server as a stdio MCP server and fail to start it. Add "type": "stdio" to the playwright server config for consistency and to match the documented schema.

[Copilot]

The root MCP config omits the inputs field (the @primer/mcp README’s VS Code example includes "inputs": []). If VS Code expects this key (even as an empty array), the config may be considered incomplete or get rewritten by tooling. Consider adding "inputs": [] at the root for compatibility with the documented configuration shape.