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Silentfail

@decksaga

关于 Silentfail

Diagnose MCP servers — health checks, tool testing, token cost audits, conflict detection, and security scanning with 50+ prompt injection patterns. Works as CLI or MCP server inside Claude Desktop.

基本信息

分类

开发工具

传输方式

stdio

发布者

decksaga

提交者

Santiago Gutierrez

配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "silentfail": {
      "command": "npx",
      "args": [
        "-y",
        "silentfail@latest",
        "--mcp"
      ]
    }
  }
}

工具

未检测到工具

工具是从 README 中自动提取的。维护者可以在 ## Tools 标题下列出工具,即可填充这部分内容。

概览

What is SilentFail?

SilentFail is a diagnostic and security tool for MCP servers. It discovers all connected MCP servers across supported clients, tests their health, calculates token costs, and scans for security issues like prompt injection and data exfiltration.

How to use SilentFail?

Clone the repository, install dependencies, and build. Add SilentFail as an MCP server to Claude Desktop, or run the CLI directly with commands such as silentfail for a health check, silentfail --test for a full scan, or silentfail --dashboard for the web UI.

Key features of SilentFail

  • Discovers MCP configs from all major clients.
  • Spawns servers and measures startup time.
  • Tests each tool with smart inferred parameters.
  • Calculates exact token cost per server and tool.
  • Detects tool name conflicts across servers.
  • Scans for security threats like prompt injection.

Use cases of SilentFail

  • Diagnose which MCP servers are failing silently.
  • Audit token consumption across all connected servers.
  • Perform security scanning for prompt injection or data exfiltration.
  • Validate server health in CI/CD pipelines.
  • Optimize tool selection by comparing token costs.

FAQ from SilentFail

Does SilentFail scan itself?

No, when running as an MCP server, SilentFail automatically excludes itself from the scan to avoid recursion.

Is it safe to run tool tests?

Yes. SilentFail only calls tools with read-only, minimal test inputs (stock tickers, currency codes) and never sends destructive operations.

Can I use it in CI?

Yes, use silentfail --test --json for machine-readable

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