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A lightweight stdio proxy that intercepts and rewrites MCP tool annotations to bypass security approval prompts in AI CLIs like Codex and Claude Code. It transp
A lightweight stdio proxy that intercepts and rewrites MCP tool annotations to bypass security approval prompts in AI CLIs like Codex and Claude Code. It transparently passes through all tool operations while marking them as safe to ensure a seamless automation experience.
轻量级 MCP 注解代理 — 拦截 tools/list 响应,将工具注解重写为"安全"值,绕过 Codex 等 AI CLI 的审批弹窗,同时完全透传所有实际操作。
OpenAI Codex CLI 根据 MCP Server 在 tools/list 响应中声明的工具注解判定是否需要审批:
需要审批 = destructiveHint == true
OR (readOnlyHint == false AND openWorldHint == true)
Playwright MCP 等 Server 对所有工具硬编码了 openWorldHint: true,导致每次操作都弹审批,严重影响自动化体验。
在 MCP Client(如 Codex)和真实 MCP Server 之间插入 stdio 代理:
flowchart LR
subgraph Client["AI CLI (Codex / Claude Code)"]
A["MCP Client"]
end
subgraph Proxy["mcp-safe-proxy"]
B["stdio 流代理"]
C["注解重写引擎"]
end
subgraph Server["MCP Server (Playwright 等)"]
D["真实 MCP Server"]
end
A -->|"stdin 请求"| B
B -->|"透传请求"| D
D -->|"stdout 响应"| C
C -->|"tools/list: 重写注解\n其他: 原样转发"| A
核心逻辑:
tools/list 响应,将每个工具的注解重写为:readOnlyHint: true ← 告诉 Client 工具只读
destructiveHint: false ← 告诉 Client 工具不搞破坏
openWorldHint: false ← 告诉 Client 工具不访问外部
tools/call、initialize 等所有其他消息完全透传,功能零损失title、idempotentHint 等其他注解字段# 方式一:全局安装(推荐,启动更快)
npm install -g mcp-safe-proxy
# 方式二:npx 按需调用(无需预装)
npx -y mcp-safe-proxy -- <command> [args...]
在 ~/.codex/config.toml(Linux/macOS)或 %USERPROFILE%\.codex\config.toml(Windows)中:
原始配置(会弹审批):
[mcp_servers.playwright]
type = "stdio"
command = "npx"
args = ["@playwright/mcp@latest"]
代理配置 — npx 方式(不弹审批):
[mcp_servers.playwright]
type = "stdio"
command = "npx"
args = ["-y", "mcp-safe-proxy", "--", "npx", "@playwright/mcp@latest"]
代理配置 — 全局安装方式:
[mcp_servers.playwright]
type = "stdio"
command = "mcp-safe-proxy"
args = ["--", "npx", "@playwright/mcp@latest"]
ccSwitch 使用标准 JSON 格式:
{
"command": "npx",
"args": ["-y", "mcp-safe-proxy", "--", "npx", "@playwright/mcp@latest"]
}
git clone https://github.com/Huan-zhaojun/mcp-safe-proxy.git
cd mcp-safe-proxy
npm install
npm run build
详见 本地开发测试指南。
mcp-safe-proxy [options] -- <command> [args...]
选项:
--verbose, -v 启用调试日志输出到 stderr
--log-file <path> 将调试日志写入指定文件(隐含 --verbose)
示例:
mcp-safe-proxy -- npx @playwright/mcp@latest
mcp-safe-proxy --verbose -- npx @playwright/mcp@latest
mcp-safe-proxy --log-file /tmp/proxy.log -- npx @playwright/mcp@latest
--是分隔符:左侧为代理选项,右侧为要包裹的 MCP Server 命令。
# E2E 测试(使用 mock MCP Server)
npm run build && node test/e2e-test.js
# 真实 Playwright MCP 对比测试(需安装 @playwright/mcp)
node test/real-playwright-test.js
child_process、fs、path)mcp-safe-proxy 在 MCP 协议层工作,兼容所有使用 stdio 传输的 MCP Server。以下是常见受审批问题影响的 Server 类别:
| 类别 | 代表 Server | 触发原因 | 注解验证 |
|---|---|---|---|
| 浏览器自动化 | Playwright MCP, Chrome DevTools MCP, Browserbase | action 工具 destructive + openWorld |
✅ |
| 文件与代码 | Filesystem MCP, GitHub MCP | 写入/删除操作 destructive |
✅ |
| 通信协作 | Notion MCP, Slack MCP, Google Workspace MCP | 非 GET 操作 destructive |
✅ |
| DevOps | Docker MCP | 容器操作 | ⬜ |
通用规则:只要 MCP Server 的工具声明了
destructiveHint: true或openWorldHint: true,就会触发 Codex 审批,mcp-safe-proxy 就能解决。
Добавь это в claude_desktop_config.json и перезапусти Claude Desktop.
{
"mcpServers": {
"mcp-safe-proxy": {
"command": "npx",
"args": []
}
}
}PRs, issues, code search, CI status
Database, auth and storage
Reference / test server with prompts, resources, and tools.
Secure file operations with configurable access controls.