# OpenMCP Client — Universal CLI for MCP Servers

> OpenMCP Client is a universal CLI to connect to MCP servers, list tools, and run calls from a terminal—useful for debugging and smoke tests.

## Install

Copy the content below into your project:

## Quick Use

1. Install / run:
   ```bash
   git clone https://github.com/LSTM-Kirigaya/openmcp-client && cd openmcp-client
   ```
2. Start / smoke test:
   ```bash
   sed -n '1,260p' README.md
   ```
3. Verify:
   - Use the README’s example to connect to one MCP server and confirm `list_tools` returns a stable tool set across two runs.

## Intro

OpenMCP Client is a universal CLI to connect to MCP servers, list tools, and run calls from a terminal—useful for debugging and smoke tests.

- **Best for:** Developers who need a terminal-first way to validate MCP servers before wiring them into agents
- **Works with:** Any MCP server that follows the spec; pairs well with CI smoke tests
- **Setup time:** 10 minutes

## Practical Notes

- Setup time ~10 minutes (install + connect to one server)
- Determinism check: tool list and one read-only call should match across 2 runs
- GitHub stars + forks (verified): see Source & Thanks

Before you ship an MCP integration, you need a ‘known-good’ smoke test. A CLI client is the simplest way to encode that test: connect, list tools, call one safe method. If this fails in CI, your agent won’t be able to recover with prompt tricks.

### FAQ

**Q: Why not test from my agent directly?**
A: A CLI isolates the server layer and makes failures easier to reproduce.

**Q: What should I test first?**
A: Connection, tool listing, and one read-only call with deterministic output.

**Q: Can I put this in CI?**
A: Yes—use it as a smoke test to ensure a server still works after upgrades.

## Source & Thanks

> Source: https://github.com/LSTM-Kirigaya/openmcp-client
> License: Apache-2.0
> GitHub stars: 745 · forks: 55

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## 快速使用

1. 安装 / 运行：
   ```bash
   git clone https://github.com/LSTM-Kirigaya/openmcp-client && cd openmcp-client
   ```
2. 启动 / 冒烟测试：
   ```bash
   sed -n '1,260p' README.md
   ```
3. 验证：
   - 按 README 的示例连接一个 MCP server，确认两次运行得到的 tools 列表一致（稳定可重复）。

## 简介

OpenMCP Client 是通用命令行客户端：连接 MCP server、列工具、发起调用，适合做调试与冒烟测试，把“能不能用”在终端里一次验证清楚，并能沉淀成 CI 的 smoke test。

- **适合谁：** 想在接入 agent 之前，用终端先把 MCP server 验证清楚的开发者
- **可搭配：** 遵循规范的 MCP server；也适合做 CI 冒烟测试
- **准备时间：** 10 分钟

## 实战建议

- 上手约 10 分钟（安装 + 连接一个 server）
- 可重复性验收：tools 列表与一次只读调用，在 2 次运行中应一致
- GitHub stars + forks（已核验）：见「来源与感谢」

上线 MCP 集成之前，需要一套“已知良好”的冒烟测试。CLI 客户端最适合把它固化：连接、列工具、调用一个安全方法。只要 CI 里失败，说明 agent 也无法靠提示词救回来。

### FAQ

**为什么不直接在 agent 里测试？**
A: CLI 把 server 层单独拎出来，更容易复现与定位问题。

**应该先测什么？**
A: 连接是否稳定、工具列表是否正确、一次只读调用是否可重复。

**能放到 CI 里吗？**
A: 可以。把它当成 smoke test，升级依赖后先验 MCP server 是否还可用。

## 来源与感谢

> Source: https://github.com/LSTM-Kirigaya/openmcp-client
> License: Apache-2.0
> GitHub stars: 745 · forks: 55


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Source: https://tokrepo.com/en/workflows/openmcp-client-universal-cli-for-mcp-servers
Author: Script Depot