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musclesworked-mcp

by csjoblom
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TypeScript
Remote

musclesworked-mcp

MCP server for the musclesworked.com exercise-to-muscle mapping API.

Connects Claude Desktop, Claude Code, Cursor, and other MCP clients to 856 exercises and 65 muscles with detailed primary/secondary/stabilizer activation data across 14 muscle groups.

Setup

Get an API key at musclesworked.com/dashboard.

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "musclesworked": {
      "command": "npx",
      "args": ["-y", "musclesworked-mcp"],
      "env": {
        "MUSCLESWORKED_API_KEY": "mw_live_..."
      }
    }
  }
}

Claude Code

claude mcp add musclesworked -- npx -y musclesworked-mcp --api-key mw_live_...

Or add to .mcp.json:

{
  "mcpServers": {
    "musclesworked": {
      "command": "npx",
      "args": ["-y", "musclesworked-mcp", "--api-key", "mw_live_..."]
    }
  }
}

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "musclesworked": {
      "command": "npx",
      "args": ["-y", "musclesworked-mcp"],
      "env": {
        "MUSCLESWORKED_API_KEY": "mw_live_..."
      }
    }
  }
}

Related MCP server: mcp-academia-server

Tools

Tool

Description

get_muscles_worked

Get primary, secondary, and stabilizer muscles for an exercise

find_exercises

Find exercises targeting a specific muscle with optional filters

analyze_workout

Analyze a workout for coverage, gaps, and imbalances

get_alternatives

Find alternative exercises ranked by muscle overlap

search_exercises

Search exercises by name to discover IDs

search_muscles

Search muscles by name to discover IDs

Example Prompts

  • "What muscles does the barbell bench press work?"

  • "Find bodyweight exercises for my chest"

  • "Analyze my push day: bench press, overhead press, tricep pushdown, lateral raise"

  • "What are some alternatives to barbell squats?"

  • "Search for exercises that target the hamstrings"

Configuration

Option

Description

--api-key <key>

API key (or set MUSCLESWORKED_API_KEY env var)

MUSCLESWORKED_API_URL

Override base URL (default: https://musclesworked.com)

Development

git clone https://github.com/csjoblom/musclesworked-mcp.git
cd musclesworked-mcp
npm install
npm run build

# Test with MCP Inspector
MUSCLESWORKED_API_KEY=mw_live_... npx @modelcontextprotocol/inspector node dist/index.js

License

MIT

Install Server
A
license - permissive license
A
quality
D
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

Resources

Unclaimed servers have limited discoverability.

Looking for Admin?

If you are the server author, to access and configure the admin panel.

Tools

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