‹ all collections
Ranked collection
MCP Servers to Avoid (Low Grade, Archived or Abandoned)
A defensive-security watchlist of MCP projects that scored a failing grade, were archived by their maintainers, or have gone many months without a commit. Connecting an abandoned server to an autonomous agent is a real risk - these entries failed CheckMCP's audit on maintenance, security, or both. Review before you trust them.
15 servers, ranked by independent MCP Score. Click any to see its full security & quality audit.
| 01 | Broker as a Service chainflip-broker.io | ● live6 tools | 69D |
| 02 | azure-mcp Azure/azure-mcp | ◆ repo★ 1.2k | 54F |
| 03 | mcp semgrep/mcp | ◆ repo★ 672 | 54F |
| 04 | mcp-server e2b-dev/mcp-server | ◆ repo★ 393 | 51F |
| 05 | railway-mcp-server railwayapp/railway-mcp-server | ◆ repo★ 191 | 47F |
| 06 | mcp-audiense-insights AudienseCo/mcp-audiense-insights | ◆ repo★ 19 | 46F |
| 07 | mcp-server-box box-community/mcp-server-box | ◆ repo★ 102 | 43F |
| 08 | mcp-server-axiom axiomhq/mcp-server-axiom | ◆ repo★ 61 | 42F |
| 09 | agentkit chargebee/agentkit | ◆ repo★ 14 | 42F |
| 10 | mcp-tinybird tinybirdco/mcp-tinybird | ◆ repo★ 80 | 39F |
| 11 | honeycomb-mcp honeycombio/honeycomb-mcp | ◆ repo★ 43 | 38F |
| 12 | discordmcp v-3/discordmcp | ◆ repo★ 213 | 24F |
| 13 | mcp prisma/mcp | ◆ repo★ 44 | 22F |
| 14 | mcp-database-server fireproof-storage/mcp-database-server | ◆ repo★ 32 | 19F |
| 15 | -DEPRECATED-mcp openfort-xyz/mcp | ◆ repo★ 4 | 3F |
MCP Servers to Avoid (Low Grade, Archived or Abandoned) — FAQ
What is the best MCP Servers to Avoid (Low Grade, Archived or Abandoned) MCP server?+
By CheckMCP's audit, Broker as a Service ranks highest in "MCP Servers to Avoid (Low Grade, Archived or Abandoned)" with an MCP Score of 69/100 (grade D). This page ranks 15 audited MCP servers by their vendor-neutral CheckMCP score (security, tool design, reliability, context-cost). Re-audit any of them at checkmcp.dev.
How are these MCP servers ranked?+
Every server on this page is independently audited by CheckMCP and scored 0–100 across weighted pillars — for live endpoints: security (OWASP MCP Top 10), tool design, schemas, reliability and context-cost; for repos: maintenance, license, adoption and documentation. Higher score = higher rank. No vendor pays for placement.
Are these MCP servers safe to use?+
Each listing links to a full CheckMCP report showing its grade, per-pillar breakdown and any security findings (tool poisoning, hardcoded secrets, the lethal trifecta). Grade A/B servers passed with no or only minor issues; check the individual report before connecting any server to sensitive data or tools.