ccg-mcp

ccg-mcp

Enables Claude Code Desktop to call OpenAI Codex/GPT-5 and Gemini APIs via stdio MCP, without requiring local CLI tools.

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README

CCG-MCP - Codex/Gemini API 版 MCP server for Claude Code

CCG-MCP 提供两个 stdio MCP server,让 Claude Code Desktop 直接通过 API 调用 OpenAI Codex/GPT-5 与 Gemini,不依赖本地 codex/gemini CLI。

安装与启动

本地目录:

uvx --from D:/code/promet/AutoGEO/.claude/ccg-mcp codex-api-mcp
uvx --from D:/code/promet/AutoGEO/.claude/ccg-mcp gemini-api-mcp

Git 仓库:

uvx --from <git-url> codex-api-mcp
uvx --from <git-url> gemini-api-mcp

Windows settings.json 示例

{
  "mcpServers": {
    "codex-api": {
      "command": "uvx",
      "args": ["--from", "D:/code/promet/AutoGEO/.claude/ccg-mcp", "codex-api-mcp"],
      "env": {
        "OPENAI_API_KEY": "${env:OPENAI_API_KEY}"
      }
    },
    "gemini-api": {
      "command": "uvx",
      "args": ["--from", "D:/code/promet/AutoGEO/.claude/ccg-mcp", "gemini-api-mcp"],
      "env": {
        "GOOGLE_API_KEY": "${env:GOOGLE_API_KEY}"
      }
    }
  }
}

macOS settings.json 示例

{
  "mcpServers": {
    "codex-api": {
      "command": "uvx",
      "args": ["--from", "/path/to/ccg-mcp", "codex-api-mcp"],
      "env": {
        "OPENAI_API_KEY": "$OPENAI_API_KEY"
      }
    },
    "gemini-api": {
      "command": "uvx",
      "args": ["--from", "/path/to/ccg-mcp", "gemini-api-mcp"],
      "env": {
        "GOOGLE_API_KEY": "$GOOGLE_API_KEY"
      }
    }
  }
}

Tool schema

codex-api.exec

exec(
  prompt: str,
  role: str = "",
  model: str = "gpt-5-codex",
  reasoning_effort: str = "medium",
  workdir: str = ""
) -> str
  • prompt:完整用户任务,不截断。
  • role:非空时作为 developer/system 上下文拼到模型输入前面。
  • model:默认 gpt-5-codex,可按账号可用性覆盖。
  • reasoning_effort:传给 OpenAI Responses API 的 reasoning effort。
  • workdir:作为工作目录上下文传入模型,不授予文件系统访问能力。

gemini-api.exec

exec(
  prompt: str,
  role: str = "",
  model: str = "gemini-3.1-pro-preview",
  workdir: str = ""
) -> str
  • prompt:完整用户任务,不截断。
  • role:非空时作为 system instruction。
  • model:默认 gemini-3.1-pro-preview,可覆盖。
  • workdir:作为工作目录上下文传入模型。

已知限制

  • 速率限制:API 可能返回 429;server 会把错误结构化为 JSON 字符串返回。
  • 模型可用性:默认模型取决于账号权限、地区和供应商发布状态。
  • API 成本:长 prompt、多轮并行调用和高 reasoning effort 会产生更高费用。
  • 本地代理:如网络需要代理,请通过系统环境变量或 SDK 支持的代理方式配置。
  • 文件访问:这两个 server 只调用远程模型,不直接读取本地工作区文件。

烟测

python tests/smoke_test.py

烟测会分别启动两个 MCP server,通过 stdio 初始化并发送 ping,验证 MCP 通道、API 可达性和非空响应。

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