custom-skills.exe — Skills Built for Your Portfolio

The open-source catalog uses industry-standard assumptions. Your firm has its own underwriting criteria, reporting templates, and workflows. I build skills tuned to exactly how your team works.

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A Prompt

Generic, one-off.

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A Custom Skill

Tuned, portable, shareable.

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An Engineered Solution

Python calculators, sub-agents, deterministic output.

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calculators/ — 21 bundled Python engines

Engineered skills bundle deterministic Python calculators. Every one of the 21 below was reviewed as pure standard-library code with no network, shell, or credential access, and each links to its source so you can read exactly what runs. This is the full set the catalog counts, not a sample.

Financial calculators 12

Construction Cost Estimatorconstruction_estimator.py

Produces a TDC (Total Development Cost) estimate for a CRE project by CSI division, with regional adjustment, soft cost layering, contingency, and sensitivity analysis.

Used byConstruction Cost Estimator
CRE Proration Calculatorproration_calculator.py

Calculates per diem prorations for property tax, rent, insurance, and CAM/OpEx at a commercial real estate closing.

Used byFunds Flow Calculator
Deal Quick Screen Calculatorquick_screen.py

Back-of-napkin deal screening: cap rate, price per unit/SF, rent vs market, DSCR at assumed financing, cash-on-cash, replacement cost ratio.

Used byDeal QuickScreen
Debt Sizing Enginedebt_sizing.py

Sizes a CRE loan against simultaneous DSCR, LTV, and debt yield constraints.

Used byLoan Sizing Engine
Fund Fee Modelerfund_fee_modeler.py

Models blended management fee economics for institutional fund raises.

Used byFund Raise Negotiation Engine
JV Waterfall Calculator (screening-grade)waterfall_calculator.py

Calculates GP/LP distributions through a multi-tier promote waterfall with preferred return accrual and a GP catch-up.

Used byJV Waterfall Architect
Lease Option Valuationoption_valuation.py

Calculates termination fees, renewal option cap rate impact, and compares conservative/moderate/aggressive option packages by NPV impact.

Used byLease Option Structurer
Loan Covenant Testercovenant_tester.py

Tests loan covenants (DSCR, LTV, debt yield) against multi-year projections.

Used byLoan Document Reviewer
Monte Carlo Return Simulatormonte_carlo_simulator.py

Stochastic simulation engine for CRE investment returns.

Used byMonte Carlo Return Simulator
NPV Trade-Out Analyzernpv_trade_out.py

Compares renewal NPV vs trade-out NPV for a lease expiration decision.

Used byLease Trade-Out Analyzer
Tenant Credit Scorertenant_credit_scorer.py

Calculates HHI concentration index, WALT-weighted credit score, expected annual loss per tenant, and occupancy cost ratios for a commercial property rent roll.

Used byTenant Credit Analyzer
Transfer Tax Calculatortransfer_tax.py

Calculates state and local transfer taxes for CRE transactions.

Used byTransfer Document PreparerFunds Flow CalculatorTitle Commitment Reviewer

Data-pipeline tools 9

Document-to-Database: Charge-Code / Account Mappermap_charge_codes.py

Maps rent-roll charge codes (or, when codes are absent, charge descriptions) to the canonical chart of accounts, and T-12 account lines to canonical account slugs.

Used byDocument to DatabaseRent Roll to DatabaseT-12 to Database
Document-to-Database: Ingestion Self-Gradergrade_ingestion.py

Scores a normalized payload (+ its validation report and optional tie-out) the way the rent-roll data-quality rubric defines: a weakest-link A/B/C letter is PRIMARY, a 0-100 weighted score is the secondary readout.…

Used byDocument to DatabaseRent Roll to DatabaseT-12 to DatabaseRent Roll to T-12 Tie-Out
Document-to-Database: Load Plan Emitteremit_load_plan.py

Emits a reviewable, FK-ordered load plan for a target-model profile: the table load order (every FK target precedes its referrer), the upsert keys (the primary key) per table, and each table's dependencies. The plan…

Used byDocument to Database
Document-to-Database: Payload Validatorvalidate_payload.py

Runs type / range / nullability and cross-field reconciliation checks over a canonical payload produced by normalize_tokens.

Used byDocument to DatabaseRent Roll to DatabaseT-12 to Database
Document-to-Database: Rent Roll <-> T-12 Tie-Outreconcile_rent_roll_t12.py

Reconciles a normalized rent roll against a normalized T-12 on a STATED, CONSISTENT basis and never forces a tie.

Used byRent Roll to T-12 Tie-OutDocument to Database
Document-to-Database: Schema Inferenceinfer_schema.py

Infers a column schema (type, nullability, detected unit, per-column confidence) and a grain guess from an unknown tabular token stream — the doc_type: auto path, used when an extracted table arrives without a known…

Used byDocument to Database
Document-to-Database: SQL DDL Emitteremit_sql_ddl.py

Emits reviewable CREATE TABLE DDL for a target-model profile.

Used byDocument to Database
Document-to-Database: Target-Model Mappermap_to_target_model.py

Maps a canonical payload into a chosen target-model profile (raw_landing, normalized_relational, star_schema, data_vault, hybrid_recommended) and reports the row counts and representative rows per table. This proves…

Used byDocument to Database
Document-to-Database: Token Normalizernormalize_tokens.py

Transforms a tokenized/extracted CRE document (rent roll, T-12, or operating statement) into canonical, typed, provenance-stamped records that downstream ingestion calculators consume.

Used byDocument to DatabaseRent Roll to DatabaseT-12 to DatabaseOperating Statement to Database
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