draft

.gitignore

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+# Created by https://www.toptal.com/developers/gitignore/api/python,linux
+# Edit at https://www.toptal.com/developers/gitignore?templates=python,linux
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
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+
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+.nfs*
+
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
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+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
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+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
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+.coverage
+.coverage.*
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+
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+
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+db.sqlite3-journal
+
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+
+# Sphinx documentation
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+
+# PyBuilder
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+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
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+
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+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+### Python Patch ###
+# Poetry local configuration file - https://python-poetry.org/docs/configuration/#local-configuration
+poetry.toml
+
+# ruff
+.ruff_cache/
+
+# LSP config files
+pyrightconfig.json
+
+# End of https://www.toptal.com/developers/gitignore/api/python,linux

Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Set environment variables
+ENV PYTHONUNBUFFERED=1
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+CMD ["python", "workout_server.py"]

README.md

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+# Workout Maker MCP Server
+
+An MCP server for creating workout content, sessions, and plans.
+
+## Features
+
+- **Create Exercise Page**: Generates a detailed exercise page in Markdown with step-by-step instructions and optimized NanoBanana/Gemini image prompts.
+- **Create Session**: Groups exercises into a balanced daily workout (Push, Pull, Legs, Core).
+- **Create Workout Plan**: Generates a multi-day schedule tailored to goals and age, ensuring balanced movement patterns.
+
+## Installation
+
+```bash
+pip install -r requirements.txt
+```
+
+## Usage
+
+Run the server:
+
+```bash
+python workout_server.py
+```
+
+### Tools
+
+1.  `create_exercise_page(name, type, steps, visual_description)`
+2.  `create_session(name, difficulty, duration_minutes)`
+3.  `create_workout_plan(goal, age_range, length_days)`
+
+## Integration with Gemini/NanoBanana
+
+The `create_exercise_page` tool outputs a Markdown block containing a command like:
+`/image prompt="..."`
+
+This allows you to easily generate consistent, high-quality illustrations for your workout content using the Gemini CLI extensions.

gemini-extension.json

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+{
+  "id": "workout-maker",
+  "name": "WorkoutMaker",
+  "description": "Create workout plans, sessions, and exercise pages with visual prompts.",
+  "version": "1.0.1",
+  "mcpServers": [
+    {
+      "id": "workout-maker",
+      "name": "Workout Maker Server",
+      "transportType": "stdio",
+      "command": "docker",
+      "args": [
+        "run",
+        "-i",
+        "--rm",
+        "idjohnson/workoutmcp:latest"
+      ]
+    }
+  ]
+}

requirements.txt

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+mcp

workout_server.py

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+from typing import List, Optional
+from mcp.server.fastmcp import FastMCP
+from pydantic import BaseModel, Field, ConfigDict
+import random
+
+# Initialize FastMCP server
+mcp = FastMCP("workout_mcp")
+
+# --- Data Models ---
+
+class ExerciseType(str):
+    PUSH = "push"
+    PULL = "pull"
+    KNEE_HIP = "knee_hip" # Combined for simplicity or split if needed. Prompt said "knee/hip dominent".
+    CORE = "core"
+    OTHER = "other"
+
+class Exercise(BaseModel):
+    name: str
+    type: str
+    steps: List[str]
+    image_prompt: str
+
+# Sample Database (in-memory)
+# In a real app, this might come from a DB or be generated.
+EXERCISE_DB = {
+    "pushup": Exercise(
+        name="Push Up",
+        type=ExerciseType.PUSH,
+        steps=["Start in plank position", "Lower body until chest nearly touches floor", "Push back up"],
+        image_prompt="A fit character performing a pushup, gym background, side view, correct form"
+    ),
+    "pullup": Exercise(
+        name="Pull Up",
+        type=ExerciseType.PULL,
+        steps=["Hang from bar", "Pull chin over bar", "Lower down"],
+        image_prompt="A fit character performing a pullup, gym background, back view, correct form"
+    ),
+    "squat": Exercise(
+        name="Bodyweight Squat",
+        type=ExerciseType.KNEE_HIP,
+        steps=["Stand feet shoulder width", "Lower hips back and down", "Stand back up"],
+        image_prompt="A fit character performing a squat, gym background, side view, correct form"
+    ),
+    "plank": Exercise(
+        name="Plank",
+        type=ExerciseType.CORE,
+        steps=["Forearms on ground", "Body straight", "Hold"],
+        image_prompt="A fit character holding a plank position, gym background, side view"
+    ),
+     "lunges": Exercise(
+        name="Walking Lunges",
+        type=ExerciseType.KNEE_HIP,
+        steps=["Step forward with one leg", "Lower hips until both knees are bent at a 90-degree angle", "Push off with your front foot to return to starting position", "Repeat with the other leg"],
+        image_prompt="A fit character performing lunges, gym background, side view, correct form"
+    ),
+    "overhead_press": Exercise(
+        name="Overhead Press",
+        type=ExerciseType.PUSH,
+        steps=["Stand with feet shoulder-width apart", "Hold dumbbells at shoulder height", "Press weights overhead until arms are fully extended", "Lower back to starting position"],
+        image_prompt="A fit character performing an overhead press with dumbbells, gym background, front view, correct form"
+    ),
+    "dumbbell_row": Exercise(
+        name="Dumbbell Row",
+        type=ExerciseType.PULL,
+        steps=["Place one knee and hand on a bench", "Hold a dumbbell in the other hand", "Pull the weight up towards your hip", "Lower back down"],
+        image_prompt="A fit character performing a dumbbell row, gym background, side view, correct form"
+    ),
+    "russian_twist": Exercise(
+        name="Russian Twist",
+        type=ExerciseType.CORE,
+        steps=["Sit on the floor with knees bent", "Lean back slightly", "Twist torso to one side, then the other", "Hold a weight for added resistance if desired"],
+        image_prompt="A fit character performing russian twists, gym background, front view, correct form"
+    )
+}
+
+# --- Inputs ---
+
+class CreateExerciseInput(BaseModel):
+    name: str = Field(..., description="Name of the exercise")
+    type: str = Field(..., description="Type: push, pull, knee_hip, core")
+    steps: List[str] = Field(..., description="List of step-by-step instructions")
+    visual_description: str = Field(..., description="Visual description for image generation")
+
+class CreateSessionInput(BaseModel):
+    name: str = Field(..., description="Name of the session (e.g. 'Morning Blast')")
+    difficulty: str = Field("beginner", description="beginner, intermediate, advanced")
+    duration_minutes: int = Field(30, description="Target duration in minutes")
+
+class CreatePlanInput(BaseModel):
+    goal: str = Field(..., description="Goal: strength, weight_loss, endurance")
+    age_range: str = Field(..., description="Age range (e.g. '20-30', '50+')")
+    length_days: int = Field(..., description="Length of plan in days")
+
+
+# --- Helpers ---
+
+def generate_nanobanana_prompt(description: str, style: str = "photorealistic") -> str:
+    """Creates a prompt optimized for NanoBanana/Gemini image generation."""
+    # Enforcing the requirement: 'consistent characters' and 'simple'
+    base_prompt = "A consistent character design, athletic wear, clean background. "
+    return f"{base_prompt} {description}. Style: {style}, high quality."
+
+# --- Tools ---
+
+@mcp.tool()
+def create_exercise_page(params: CreateExerciseInput) -> str:
+    """Creates a Markdown page for a single exercise with Nanobanana image prompts."""
+    
+    image_prompt = generate_nanobanana_prompt(params.visual_description)
+    
+    md = f"# {params.name}\n\n"
+    md += f"**Type:** {params.type.capitalize()}\n\n"
+    md += "## Steps\n"
+    for i, step in enumerate(params.steps, 1):
+        md += f"{i}. {step}\n"
+    
+    md += "\n## Visual Reference\n"
+    md += f"> **NanoBanana Image Prompt:**\n"
+    md += f"> `/image prompt=\"{image_prompt}\" --count=1`\n\n"
+    md += "*(Use the above command with your Gemini agent to generate the visual)*\n"
+    
+    return md
+
+@mcp.tool()
+def create_session(params: CreateSessionInput) -> str:
+    """Creates a workout session grouping exercises. Ensures variety."""
+    
+    # Logic: Select one of each type for a balanced session
+    selected_exercises = []
+    
+    # Simple selection logic from DB
+    types_needed = [ExerciseType.PUSH, ExerciseType.PULL, ExerciseType.KNEE_HIP, ExerciseType.CORE]
+    
+    for t in types_needed:
+        # Find candidates
+        candidates = [e for e in EXERCISE_DB.values() if e.type == t]
+        if candidates:
+            # Randomly pick one or based on difficulty (mocking logic here)
+            selected_exercises.append(random.choice(candidates))
+    
+    md = f"# Workout Session: {params.name}\n\n"
+    md += f"**Difficulty:** {params.difficulty} | **Duration:** {params.duration_minutes} mins\n\n"
+    md += "## Warmup\n- 5 mins light cardio\n\n"
+    md += "## The Circuit\n"
+    md += "*Perform 3 rounds of the following:*\n\n"
+    
+    for ex in selected_exercises:
+        md += f"### {ex.name}\n"
+        md += f"**Target:** {ex.type.capitalize()}\n"
+        md += f"- Instructions: {ex.steps[0]}...\n"
+        md += f"- [View Full Exercise Page via `create_exercise_page`]\n\n"
+    
+    md += "## Cooldown\n- 5 mins stretching\n"
+    
+    return md
+
+@mcp.tool()
+def create_workout_plan(params: CreatePlanInput) -> str:
+    """Creates a multi-day workout plan based on goals."""
+    
+    md = f"# {params.length_days}-Day Workout Plan: {params.goal.capitalize()}\n"
+    md += f"**Target Audience:** Age {params.age_range}\n\n"
+    
+    # Logic to adjust intensity based on age/goal
+    rest_frequency = 3 # Default: rest every 3rd day
+    if "50+" in params.age_range or "beginner" in params.goal:
+        rest_frequency = 2
+        
+    for day in range(1, params.length_days + 1):
+        md += f"## Day {day}\n"
+        
+        if day % rest_frequency == 0:
+            md += "**Rest & Recovery**\n- Light walking or stretching.\n\n"
+        else:
+            session_name = f"Day {day} {params.goal} Focus"
+            md += f"**Session:** {session_name}\n\n"
+            
+            # Select exercises for this day to meet requirements
+            daily_exercises = []
+            types_needed = [ExerciseType.PUSH, ExerciseType.PULL, ExerciseType.KNEE_HIP, ExerciseType.CORE]
+            
+            for t in types_needed:
+                candidates = [e for e in EXERCISE_DB.values() if e.type == t]
+                if candidates:
+                    daily_exercises.append(random.choice(candidates))
+            
+            md += "| Type | Exercise | Sets/Reps |\n"
+            md += "|---|---|---|\n"
+            for ex in daily_exercises:
+                 # Adjust reps based on goal
+                reps = "3x10"
+                if params.goal == "strength": reps = "5x5"
+                elif params.goal == "endurance": reps = "3x15+"
+                
+                md += f"| {ex.type.capitalize()} | {ex.name} | {reps} |\n"
+            
+            md += "\n"
+
+    return md
+
+if __name__ == "__main__":
+    mcp.run()