Everything
The reference MCP server — exercises every primitive (tools, resources, prompts, sampling) at once. The one to point your client at first.
Everything is exactly what it sounds like — the MCP server that demonstrates every primitive in the protocol at once. Tools, resources, prompts, sampling, the lot. If you're learning MCP, this is the one you point your client at first. If you're building MCP, this is the one you test against. The reference, not a tutorial — and that's the right way around.
Seal evidence
Official reference server from the Model Context Protocol team. Code reviewed in-tree by Anthropic + MCP working group. Tier 1 by editorial decision.
L1-washL2-editorial
Pinned to main
Similar tools
Time
Get the current time and do timezone conversions. Stops the agent from hallucinating today's date — which it absolutely will, otherwise.
Sequential Thinking
Forces an agent to lay out and revise a plan step-by-step before acting. The cheap way to get measurably better tool-using behaviour.
Memory
A knowledge-graph memory server — the agent stores entities, relations, observations and queries them across sessions.
Git
Read, search, and manipulate Git repositories from an MCP client. Status, log, diff, branch — all the safe primitives.