# Python Version Fix Strategy

**Date**: 2025-01-27
**Issue**: BUILD-FAIL-001
**Agent**: Strategist

## Problem Statement

FastMCP Cloud build fails because:
- Build environment uses Python 3.12.12 (base image `mcp-base-python3.12`)
- Project requires Python >=3.13 (`pyproject.toml`)
- No explicit Python version configuration for FastMCP Cloud

## Solution Options Analysis

### Option 1: FastMCP Configuration File (Recommended)
**Approach**: Create `fastmcp.json` with explicit Python 3.13 requirement

**Pros**:
- Native FastMCP Cloud support (v2.12.0+)
- Minimal changes
- Aligns with FastMCP best practices
- Single source of truth

**Cons**:
- Requires FastMCP Cloud to support Python 3.13 base images
- May need platform verification

**Risk**: Low
**Effort**: Low
**Production Ready**: Yes

### Option 2: Custom Dockerfile (Fallback)
**Approach**: Provide custom Dockerfile using Python 3.13 base image

**Pros**:
- Full control over build environment
- Can use official Python 3.13 images
- Works with any container platform

**Cons**:
- FastMCP Cloud may not support custom Dockerfiles
- Requires maintaining Dockerfile
- May break FastMCP Cloud integration

**Risk**: Medium
**Effort**: Medium
**Production Ready**: Conditional (if FastMCP Cloud supports it)

### Option 3: Lower Python Requirement (Not Recommended)
**Approach**: Change `requires-python` to `>=3.12`

**Pros**:
- Immediate fix
- No build changes needed

**Cons**:
- Violates project requirements
- May break features requiring 3.13+
- Technical debt

**Risk**: High
**Effort**: Low
**Production Ready**: No

## Recommended Solution

**Primary**: Option 1 - FastMCP Configuration File

### Implementation Plan

1. **Create `fastmcp.json`**:
   - Specify Python 3.13 in environment block
   - Configure entrypoint and dependencies
   - Align with `pyproject.toml`

2. **Add Build Validation**:
   - Pre-build check: Verify Python version matches `requires-python`
   - Fail fast in CI/CD if mismatch detected

3. **Documentation**:
   - Update deployment docs with Python version requirements
   - Document FastMCP Cloud configuration

4. **Testing**:
   - Test build locally with Python 3.13
   - Verify `fastmcp.json` syntax
   - Test deployment to FastMCP Cloud

### Fallback Plan

If FastMCP Cloud doesn't support Python 3.13:
- Create custom Dockerfile for alternative deployment
- Document deployment options
- Consider FastMCP Cloud feature request

## Success Criteria

- ✅ Build succeeds with Python 3.13
- ✅ Dependencies install correctly
- ✅ Server starts successfully
- ✅ All tests pass
- ✅ Build validation prevents future mismatches

## Implementation Checklist

- [ ] Create `fastmcp.json` with Python 3.13
- [ ] Add build-time Python version validation
- [ ] Test local build with Python 3.13
- [ ] Verify FastMCP Cloud accepts configuration
- [ ] Update deployment documentation
- [ ] Add CI check for Python version consistency
