mcp servers
Everything MCP Server
Official MCP test/reference server. Exercises tools, prompts, resources, sampling, elicitation, tasks. Not a useful production server — for client authors.
install via your agent of choice
❯ npx -y @modelcontextprotocol/server-everything
## what it does
tl;dr: the README says it is not intended to be a useful server. It is a client test harness. get-env dumps process env — do not point this at a machine with secrets if you do not want those strings in the model.
Install
npx -y @modelcontextprotocol/server-everythingAlso: sse and streamableHttp modes in the README. Docker: mcp/everything.
Tool list above is a subset of features.md. Full list lives there. Related: Fetch MCP.
## compatibility
claude-desktop ✓
claude-code ✓
cursor ✓
## exposed tools
→ echo
→ get-sum
→ get-env
→ get-tiny-image
→ trigger-long-running-operation
→ simulate-research-query
→ trigger-sampling-request
→ trigger-elicitation-request
## embed this badge
cache ✓ in cache.directory
