# Musclesworked Mcp

> MCP server for exercise-to-muscle mapping. 856 exercises, 65 muscles, 14 muscle groups with primary/secondary/stabilizer activation data.

- **Type:** MCP server
- **Install:** `agentstack add mcp-csjoblom-musclesworked-mcp`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [csjoblom](https://agentstack.voostack.com/s/csjoblom)
- **Installs:** 0
- **Category:** [Integrations](https://agentstack.voostack.com/c/integrations)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [csjoblom](https://github.com/csjoblom)
- **Source:** https://github.com/csjoblom/musclesworked-mcp
- **Website:** https://musclesworked.com

## Install

```sh
agentstack add mcp-csjoblom-musclesworked-mcp
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# musclesworked-mcp

MCP server for the [musclesworked.com](https://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](https://musclesworked.com/dashboard).

### Claude Desktop

Add to your `claude_desktop_config.json`:

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

### Claude Code

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

Or add to `.mcp.json`:

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

### Cursor

Add to `.cursor/mcp.json`:

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

## 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 ` | API key (or set `MUSCLESWORKED_API_KEY` env var) |
| `MUSCLESWORKED_API_URL` | Override base URL (default: `https://musclesworked.com`) |

## Development

```bash
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

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [csjoblom](https://github.com/csjoblom)
- **Source:** [csjoblom/musclesworked-mcp](https://github.com/csjoblom/musclesworked-mcp)
- **License:** MIT
- **Homepage:** https://musclesworked.com

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/mcp-csjoblom-musclesworked-mcp
- Seller: https://agentstack.voostack.com/s/csjoblom
- Browse the marketplace: https://agentstack.voostack.com/browse

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