ROI Formulas
All formulas are in mcp-server/lib/constants.js. They are deterministic and documented.
Components​
Productivity Savings​
seats × avg_developer_cost_annual × velocity_improvement_pct × 0.6
The 0.6 is a utilization factor — not all dev time is code-writing.
Bug Remediation Savings​
seats × 12 × bug_escape_reduction_pct × avg_bug_remediation_cost
12 = industry benchmark for production bugs per developer per year.
Onboarding Savings​
new_hires × (avg_developer_cost_annual / 260) × (14 × onboarding_time_reduction_pct)
new_hires= seats × new_hire_rate_annual260= working days per year14= baseline onboarding days to first meaningful commit
Scenarios​
| Scenario | Velocity | Bug Escape Reduction | Onboarding Reduction |
|---|---|---|---|
| Conservative | 20% | 25% | 35% |
| Base | 32% | 38% | 50% |
| Aggressive | 45% | 45% | 55% |
METR Caveat​
The METR 2025 RCT found experienced devs 19% slower with early-2025 AI tools. Rebuttal points:
- Study tested pre-Agent Mode, pre-Subagent tools
- No Cursor Rules or deployment strategy in the study
- Salesforce/NVIDIA results are post-strategy, not just post-tool
Always acknowledge the METR study — it builds credibility. Then explain why deployment strategy changes outcomes.