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Best MCP Servers for AI & LLM Tooling
MCP servers and frameworks for building, observing, and evaluating LLM apps - agent frameworks, model hubs, prompt management, eval platforms, and tracing. Since these tools handle prompts and model output, we audit them for sensitive-data leakage and tool-design quality. Sorted by CheckMCP audit score.
7 servers, ranked by independent MCP Score. Click any to see its full security & quality audit.
| 01 | opik-mcp comet-ml/opik-mcp | ◆ repo★ 210 | 91A |
| 02 | @huggingface/mcp-services huggingface.co | ● live8 tools | 87B |
| 03 | mastra mastra-ai/mastra | ◆ repo★ 25k | 75C |
| 04 | mcp-server-langfuse langfuse/mcp-server-langfuse | ◆ repo★ 166 | 57D |
| 05 | scorable-mcp root-signals/root-signals-mcp | ◆ repo★ 13 | 55D |
| 06 | ollama-mcp rawveg/ollama-mcp | ◆ repo★ 167 | 54F |
| 07 | atla-mcp-server atla-ai/atla-mcp-server | ◆ repo★ 18 | 42F |
Best MCP Servers for AI & LLM Tooling — FAQ
What is the best MCP Servers for AI & LLM Tooling MCP server?+
By CheckMCP's audit, opik-mcp ranks highest in "Best MCP Servers for AI & LLM Tooling" with an MCP Score of 91/100 (grade A). This page ranks 7 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.