Picking an MCP server isn't about finding "the best one." Most categories have several reasonable options that overlap heavily. The goal is to find one that fits your constraints and that you'd be comfortable running on your machine.
A practical checklist
- Provenance — how many sources index it? Reference servers in the official registry are the safest pick.
- Maintainership — when was the last commit? An abandoned server with credential access is a liability.
- Scope — does it do one thing well, or twenty things half-well? Smaller scope means less to audit.
- Transport — does the server run locally (stdio) or remotely (HTTP/SSE)? Remote means trusting another host.
- License — MIT and Apache-2.0 are the safe defaults. Watch for missing or unclear licenses.
- Permissions — what does it actually need? A read-only filesystem server is very different from a read-write one.
Read the source
MCP servers are usually small — a few hundred lines of TypeScript or Python. Open the repo, skim the tool definitions, and confirm the surface matches what the README claims. This catches more problems than any badge or rating ever will.