I Opened All Thirteen Memory MCP Servers. Every Public Signal I Trusted Was Wrong.

Description and use

Developers often rely on public metrics such as stars, registry entries, and download counts to evaluate memory MCP servers, but these metrics frequently misrepresent the actual server being installed. The author proposes a simple four‑step check—verify the repo for star count, last commit date, sub‑project existence, and true cost of “free”—to quickly assess a server’s relevance and avoid misleading signals.

Problem

Developers rely on public metrics (stars, registry entries, download counts, README claims) to evaluate memory MCP servers, but these signals often misrepresent the actual server being installed.

Outcome

Using the four quick checks eliminates reliance on misleading public signals, ensuring developers choose servers that match their deployment needs and avoid abandoned or misrepresented projects.

Workflow

• Open the repository the install command points at to verify star count.
• Check the last commit date on the main branch.
• Search the repository to confirm the sub-project referenced in the README still exists.
• Determine what resources are required to run a “free” server (e.g., database, embeddings key).

Evidence

The star count often belongs to a different project

Source

The registry is a form, not a review

Source

Download counts measure the reference implementation, not the field

Source