MCP Client

Universal MCP client for connecting to any MCP server with progressive disclosure.

Install

npx skills add coleam00/second-brain-skills --skill mcp-client -g -a claude-code -y

Press to copy:C Claude CodeX CodexU CursorA Ask your agent

Repository: coleam00/second-brain-skills837
Category: AI and agents
Updated: 9mo ago
License: See repository
Context cost: Lightabout 901 tokens
Runs scripts: Yes, review before use

What it does

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.

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

Read the whole SKILL.md on GitHub