FactLot

ONLINE FactLot answered an MCP connection on 03 Nov 2026 and introduced itself as factlot 0.1.1 (MCP protocol 2025-06-18).

24 tools offered to AI assistants

• calc_rent_schedule · Build a base-rent schedule from commencement date, term, area, starting $/SF/yr, escalations (percent or fixed $/SF), and abated months. Returns rent steps, totals, expiration date, and a calculation trace. Deterministic: use this instead o
• calc_net_effective_rent · Compute effective rent, straight-line net effective rent, and discounted net effective rent ($/SF/yr) after free rent, TI allowance, leasing commissions, and other landlord concessions. Deterministic: use this instead of doing the math your
• calc_compare_proposals · Rank 2–20 lease proposals with different terms, sizes, free rent, TI, concessions, and expense structures on one discounted $/SF/yr basis: effective occupancy cost (tenant perspective) or discounted net effective rent (landlord perspective)
• calc_percentage_rent · Percentage (overage) rent for a lease year: net sales after exclusions over a natural or fixed breakpoint, prorated for partial years, less amounts already paid. Deterministic: use this instead of doing the math yourself; cite formula calc.
• calc_cam_reconciliation · Reconcile a tenant's annual CAM charge: exclusions, occupancy gross-up of variable expenses, pro rata share, controllable-expense caps (compounding_from_base, simple_from_base, year_over_year), base year or expense stop, and estimates paid.
• calc_debt_sizing · Size the maximum loan under any combination of max LTV, min DSCR, and min debt yield for a given NOI, rate, and amortization. Reports the binding constraint, debt service, and resulting metrics. Deterministic: use this instead of doing the
• calc_lease_remeasurement_asc842 · Remeasure a lessee's lease liability and right-of-use asset under ASC 842 after a modification, lease-term reassessment, contingency resolution, or residual value guarantee change: new liability (PV of remaining payments), liability and ROU
• calc_prepayment_and_defeasance · Prepayment premium, total payoff, and cost as a share of balance for a fixed-rate amortizing or interest-only loan under yield maintenance (PV of remaining payments or rate differential, with a minimum and an explicit discounting convention
• calc_walt · Weighted average remaining lease term in years, weighted by area or annual rent, as of a date. Deterministic: use this instead of doing the math yourself; cite formula calc.walt@1 and the returned steps, and surface any warnings.
• calc_npv · NPV of periodic cash flows (t = 0, 1, 2, ...; the t = 0 flow is not discounted) at a per-period discount rate given as a decimal. Deterministic: use this instead of doing the math yourself; cite formula calc.npv@1 and the returned steps, an
• calc_irr · Periodic and annualized IRR of periodic cash flows, as decimals (0.085 = 8.5%), solved deterministically by scanning a 1-point grid of per-period rates and bisecting each sign change; reports every root it finds when cash flows have multipl
• calc_lease_vs_own · Compare leasing with buying over a fixed horizon: NPV of each case's annual cash costs (rent, free rent, tenant expenses, and move-in costs versus equity, debt service, owner expenses, reserves, and a sale at the horizon by stated value or

What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.