Does Everything (reference) work with Claude Code?

Yes. Everything (reference) passed every step of our test in Claude Code on Oct 13, 2026: it installed, connected, its tools were visible, and an agent used it to finish a real task.

Result

ResultPassed
Date testedOct 13, 2026
Plan tested onClaude Pro
App version2.1.296 (Claude Code)
Modelhaiku

Steps

  1. install OK
  2. connected OK
  3. tools visible OK
  4. agent task OK

From our own harness run, not the maker’s claims. How we test.

What happened in this run

Install config we used

claude mcp add -s local ref-everything -- npx -y @modelcontextprotocol/server-everything

Connection check

ref-everything: npx -y @modelcontextprotocol/server-everything - ✔ Connected

Tools check

verified via task step: agent saw and called mcp__ref-everything__echo

Agent task: task

  • Tool calls, in order: ToolSearch, mcp__ref-everything__echo
  • Agent’s answer (excerpt): toolpassed
  • Run: 3 turns, 3.5 s, $0.0044 model cost

Raw details from our harness log for this run. Secrets redacted.

Set it up in Claude Code

Copy-paste config for every app is on the Everything (reference) page. Not connecting? Claude Code MCP troubleshooting.

Other apps we tested it in: Cursor (passed).

All MCP servers tested in Claude Code

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