# Horizon MCP Auth Proxy

> Horizon MCP Auth Proxy — razewang-mcp-proxy. Use this tool when you need to securely connect clients to remote Streamable HTTP MCP servers without exposing upstream API keys. It solves authentication and security problems by wrapping MCP servers behind Horizon OAuth, adding fixed authentication headers to upstream requests. The tool accepts bearer tokens, API keys, and custom headers as inputs, making it ideal for use cases requiring secure and authenticated access to MCP servers.

Canonical page: https://skillsregistry.net/skills/razewang-mcp-proxy  
JSON: https://api.skillsregistry.net/v1/skills/razewang-mcp-proxy

## Description

A generic single-upstream MCP authentication proxy that wraps remote Streamable HTTP MCP servers behind Horizon OAuth, enabling clients to connect securely without carrying upstream API keys. It adds a fixed authentication header to upstream requests and supports bearer tokens, API keys, and custom headers.

## Trust

- **Trust score (0–1):** 0.70
- **Verification tier:** verified
- **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/ktooziwcwz)
- **Repository:** <https://github.com/Razewang/mcp-proxy>

## 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": "razewang-mcp-proxy"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/razewang-mcp-proxy` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/razewang-mcp-proxy/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