MusclesWorked

csjoblom/musclesworked-mcp

Connects Claude to the musclesworked.com API for exercise and muscle data. You get six tools: look up which muscles an exercise hits (primary, secondary, stabilizer), search 856 exercises by target muscle or equipment type, analyze full workouts for coverage gaps and imbalances, find alternative exercises ranked by muscle overlap, and search both exercises and muscles by name. The workout analysis tool is the standout here. Tell it your routine and it maps out what you're hitting, what you're missing, and where you might be creating imbalances. Requires an API key from musclesworked.com. Useful if you're building fitness apps, planning programs, or just want Claude to understand exercise mechanics beyond generic advice.

GitHub stars

2

tools

6

auth

Secret needed

transport

STDIO

env var

1

last updated

Feb 17, 2026

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

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

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