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Exercise-to-muscle mapping: 856 exercises, 65 muscles, workout analysis & alternatives.
About
Exercise-to-muscle mapping: 856 exercises, 65 muscles, workout analysis & alternatives.
Security Report
Valid MCP server (3 strong, 4 medium validity signals). 3 known CVEs in dependencies (0 critical, 3 high severity) Package registry verified. Imported from the Official MCP Registry.
5 files analyzed · 4 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: MUSCLESWORKED_API_KEY
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-csjoblom-musclesworked": {
"env": {
"MUSCLESWORKED_API_KEY": "your-musclesworked-api-key-here"
},
"args": [
"-y",
"musclesworked-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
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_..."
}
}
}
}
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
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