AAIAgentAlts

Everything (reference server)

Test server that exercises every MCP feature

★ Stars91.4k91,374 on GitHub
Last commit19 Oct 2026
LicenceApache-2.0 / MIT (MCP licence transition)Per the project
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From GitHub, fetched 19 Oct 2026. Stars are for the whole repository; the last-update date is for this folder.

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A reference server from the MCP project that implements prompts, resources, tools and sampling, so client developers can check their client handles each part of the protocol. It's meant for testing, not for real work.

At a glance

Runs asLocal
TypeMCP server
Maintained byOfficial
Installnpx -y @modelcontextprotocol/server-everything

Sources: github.com/modelcontextprotocol/servers/tree/main/src/everything, checked 19 Oct 2026. “Runs as” is from this listing. Blank means we haven't found it in official docs yet, not that it's unsupported.

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