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Claude: Reference & Testing

Claude setup for Reference & Testing. 3 indexed servers in this category, 0 with a remote endpoint. Named here: Everything (reference), Filesystem (reference), Time (reference). Claude Desktop stores MCP servers in claude_desktop_config.json. Claude Code adds them with claude mcp add and .mcp.json. Those shapes are quoted on the Claude hub from the vendor docs. The install block on each server page is generated from that server's own registry entry.

Category hub: Reference & Testing. The same category for Cursor and VS Code.

Paid listings (Sponsored, then Featured) appear first in every list, marked Advertisement. Organic listings follow, sorted by GitHub stars. Sorted by GitHub stars as of 2026-10-17. Servers with no public GitHub repo follow, in alphabetical order.

• Everything (reference) — stdio (local, npm). Test server from the MCP maintainers that exercises prompts, resources and tools; useful for checking a client. · ★ 91,330 GitHub stars · 2026-10-17
• Filesystem (reference) — stdio (local, npm). Reference server for reading and writing local files, limited to directories you allow. · ★ 91,330 GitHub stars · 2026-10-17
• Time (reference) — stdio (local, pypi). Reference server for current time lookups and time-zone conversions. · ★ 91,330 GitHub stars · 2026-10-17