A team is standardizing Claude Code MCP setup. They need Jira for everyone, and one engineer wants to try an experimental diagramming server. Which two choices are best? Select two.

Answer: A and D — Configure a community Jira MCP server in the project's .mcp.json, with the token as ${JIRA_TOKEN} / Configure the experimental diagramming server in that engineer's ~/.claude.json

Shared tooling belongs in project-scoped .mcp.json with secrets referenced through environment variable expansion, and a standard integration like Jira is better served by an existing community server (a). Personal or experimental servers belong in user-scoped ~/.claude.json (d). A custom Jira server (b) spends effort on a solved problem. Adding the experiment to .mcp.json (c) pushes an untested server on the whole team.