mcp-client

Q: How do I install mcp-client?

Run npx skills add https://github.com/coleam00/second-brain-skills --skill mcp-client in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/mcp-client/ (personal) or .claude/skills/mcp-client/ (project).

by coleam00AI & Agents

Universal MCP client for connecting to any MCP server with progressive disclosure. Wraps MCP servers as skills to avoid context window bloat from tool definitions. Use when interacting with external MCP servers (Zapier, Sequential Thinking, GitHub, filesystem, etc.), listing available tools, or executing MCP tool calls. Triggers on requests like "connect to Zapier", "use MCP server", "list MCP tools", "call Zapier action", "use sequential thinking", or any MCP server interaction.

Installs: 138
Last 24h: —
Trending rank: —
Security: Not audited

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/coleam00/second-brain-skills --skill mcp-client

01
Install
Run the command in your project. The CLI asks which agents to install for.
02
Describe the task
Ask your agent for something this skill covers. It loads mcp-client automatically when relevant.
03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Universal MCP Client

Connect to any MCP server with progressive disclosure - load tool schemas on-demand instead of dumping thousands of tokens into context upfront.

Skill Location

This skill is located at: .claude/skills/mcp-client/

Script path: .claude/skills/mcp-client/scripts/mcp_client.py

Configuration

The script looks for config in this order:

MCP_CONFIG_PATH env var (custom path)
references/mcp-config.json (this skill's config - recommended)
.mcp.json in project root
~/.claude.json

Your config file: .claude/skills/mcp-client/references/mcp-config.json

Edit this file to add your API keys. The example file (example-mcp-config.json) is kept as a reference template.

If the user hasn't provided their Zapier API key yet, ask them for it.

Running Commands

All commands use the script at .claude/skills/mcp-client/scripts/mcp_client.py:

# List configured servers
python .claude/skills/mcp-client/scripts/mcp_client.py servers

# List tools from a server
python .claude/skills/mcp-client/scripts/mcp_client.py tools <server_name>

# Call a tool
python .claude/skills/mcp-client/scripts/mcp_client.py call <server> <tool> '{"arg": "value"}'

Workflow

Check config exists - Run servers command. If error, create .mcp.json
List servers - See what MCP servers are configured
List tools - Get tool schemas from a specific server
Call tool - Execute a tool with arguments

Commands Reference

Command	Description
`servers`	List all configured MCP servers
`tools <server>`	List tools with full parameter schemas
`call <server> <tool> '<json>'`	Execute a tool with arguments

Example: Zapier

# 1. List servers to confirm Zapier is configured
python .claude/skills/mcp-client/scripts/mcp_client.py servers

# 2. List Zapier tools
python .claude/skills/mcp-client/scripts/mcp_client.py tools zapier

# 3. Call a Zapier tool
python .claude/skills/mcp-client/scripts/mcp_client.py call zapier <tool_name> '{"param": "value"}'

Example: Sequential Thinking

# 1. List tools
python .claude/skills/mcp-client/scripts/mcp_client.py tools sequential-thinking

# 2. Use sequential thinking
python .claude/skills/mcp-client/scripts/mcp_client.py call sequential-thinking sequentialthinking '{"thought": "Breaking down the problem...", "thoughtNumber": 1, "totalThoughts": 5, "nextThoughtNeeded": true}'

Config Format

Config file format (references/mcp-config.json):

{
  "mcpServers": {
    "zapier": {
      "url": "https://mcp.zapier.com/api/v1/connect",
      "api_key": "your-api-key"
    },
    "sequential-thinking": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-sequential-thinking"]
    }
  }
}

Transport detection:

url + api_key → FastMCP with Bearer auth (Zapier)
command + args → stdio (local servers like sequential-thinking)
url ending in /sse → SSE transport
url ending in /mcp → Streamable HTTP

Error Handling

Errors return JSON:

{"error": "message", "type": "configuration|validation|connection"}

configuration - Config file not found. Create .mcp.json
validation - Invalid server or tool name
connection - Failed to connect to server

Dependencies

pip install mcp fastmcp

References

references/example-mcp-config.json - Template config file
references/mcp-servers.md - Common server configurations
references/python-mcp-sdk.md - Python SDK documentation

FAQ

What does the mcp-client skill do?

How do I install mcp-client?

Run npx skills add https://github.com/coleam00/second-brain-skills --skill mcp-client in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/mcp-client/ (personal) or .claude/skills/mcp-client/ (project).

Which AI agents can use mcp-client?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is mcp-client safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains mcp-client?

It is published by coleam00 in coleam00/second-brain-skills. It has 138 recorded installs.

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mcp-client

Install

Install

Describe the task

Review the result

SKILL.md

Universal MCP Client

Skill Location

Configuration

Running Commands

Workflow

Commands Reference

Example: Zapier

Example: Sequential Thinking

Config Format

Error Handling

Dependencies

References

FAQ

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