# mcp-slim-guard

> mcp-slim-guard — lennney-mcp-slim-guard. Use this tool when you need to protect your MCP setup from security threats with a lightweight proxy that offers compression, SSRF protection, and advanced filtering capabilities. It solves problems related to security, performance, and access control by providing features like allow/deny lists, auditing, rate limiting, and injection detection. Ideal for use cases requiring enhanced security and optimized data transfer, it takes in MCP traffic and outputs secured and filtered data.

Canonical page: https://skillsregistry.net/skills/lennney-mcp-slim-guard  
JSON: https://api.skillsregistry.net/v1/skills/lennney-mcp-slim-guard

## Description

Lightweight MCP security proxy — compression (up to 86%) + SSRF protection + allow/deny + audit + rate limiting + injection detection

## Trust

- **Trust score (0–1):** 0.66
- **Verification tier:** scanned
- **Last scanned:** 2026-08-29

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** security
- **Updated:** 2026-08-29

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/j5cgns8b2u)
- **Repository:** <https://github.com/lennney/mcp-slim-guard>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "lennney-mcp-slim-guard"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/lennney-mcp-slim-guard` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/lennney-mcp-slim-guard/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt