# "Only 5 of 12 MCP servers exceed 80% reliability" — unverifiable figures

> As of October 2026 no source could be located for the claim that only 5 of 12 MCP servers exceed 80% reliability with mcp-sqlite at 10% and mcp-git at 4%, a 491ms average latency and 9 of 12 scoring 90+ on efficiency.

A specific MCP reliability table whose numbers cannot be traced to any test.

- **Category:** Contested claims
- **2026 frontier:** No source located for the quoted numbers
- **Credibility:** The shape of the claim maps onto a real blog post that reviewed twelve MCP servers — but none of the quoted figures appear in it. That review reported a 4 keep / 6 cut / 2 watch split with uptimes like Vercel 100%, Ahrefs 96%, Gmail 97%. Other real MCP tests exist (a 36-server grading exercise where about a third scored D or F; a 100-server stress test with a 320ms median latency and 71% median pass rate), and none contain the 10%, 4%, 491ms or 9-of-12 figures.
- **Verification:** Disputed
- **Source:** [Correction: real 12-server MCP review](https://aisuffer.com/blog/claude-mcp-review/)
- **Last updated:** 2026-10-04

> Contested claim: The claim that a test of 12 MCP servers found only 5 above 80% reliability, 5 below 50% (mcp-sqlite 10%, mcp-git 4%), 491ms average latency and 9 of 12 scoring 90+ on efficiency.