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ValiFit Constitutional Charter

Algorithmic Transparency

The principle

Every scoring formula is public, every weight is documented, every methodology is reproducible from federal data.

The commitment

The 8 ValiFit composite scores (Budget, Commute, Appreciation, School Investment, Environmental Safety, Safety Infrastructure, Health Infrastructure, Livability) each have public methodology pages at /trust/methodology and federal-source documentation at /trust/sources. The unified-scorer source is in lib/composites/* — a single function per composite, no hidden ML model, no black-box ranking. Anyone can trace a 78/100 score back to its component inputs (each cited) and verify the math. This is opposite of Zillow's Zestimate, which is a regression model trained on private MLS feeds with weights nobody can inspect.

Why this matters

Black-box scoring lets companies hide bias. If you can't see the weights, you can't audit the bias. We make the weights public so the bias audit is mechanical: anyone can run the formula on any neighborhood and get the same result we did.

How we enforce

lib/composites/* — one TS file per composite, no compiled binaries, no encrypted weights, full unit-test coverage. /trust/methodology renders the formulas. Every composite output ships with explanation: { weights, inputs, source } so the math is reconstructible.

lib/composites/Public verification

Aligns with

  • NIST AI Risk Management Framework
  • EU AI Act Article 13 (transparency)

Last reviewed and affirmed: 2026-05-08. The charter is versioned with the codebase — a Git history of changes to lib/charters.ts serves as the audit log.

Other charters

Source SovereigntyEvery score, ranking, and number on ValiFit traces to a federal or authoritative open-data source we can cite by URL.FHA-Safe MethodologyNo protected class — race, ethnicity, religion, national origin, sex, familial status, disability — is a factor in any score, recommendation, or routing decision.Citation DensityEvery page presents at least one citable federal source per major claim. No "ValiFit says" without "the federal source said."Public Bias Audit (Stream-Only)Every quarter, ValiFit runs the same statistical bias audit any regulator would run — composite scores correlated against Census ACS protected-class indicators — but we never store the protected-class data. We pull it fresh from the public Census API at audit time, compute correlations in memory, persist only the result matrix, and discard the raw data.Lead-Routing NeutralityNo agent receives better leads, higher fit scores, or preferential placement because they paid more. Routing is determined exclusively by Agent Quality Score (AQS).
All charters