Audit policy feedback performativity
Audit whether deploying a probability-driven policy is associated with a changed score-to-outcome relationship: compute cluster-level exposed-versus-comparison pre/post differences in predictions, outcomes, calibration residuals, and Brier loss; bootstrap the assignment unit; and abstain when baseline balance or score overlap cannot support the comparison.
What it's for
Gives Gitrevio a post-deployment AI-governance control most dashboards omit: it tests whether acting on a model changed the relationship the model was trained to predict, while refusing a causal or person-level conclusion.
What you give it
Inputs split into evidence read from your connected systems, calibration your team owns, and numerical controls that affect precision but never the result's meaning.
| Field | Type | Role | Required |
|---|---|---|---|
| bootstrap_draws | integer ≥ 500, ≤ 20000 | Numerical control | Optional |
| confidence_level | number ≥ 0.8, ≤ 0.99 | Your calibration | Optional |
| max_detail_rows | integer ≥ 1, ≤ 500 | Numerical control | Optional |
| maximum_baseline_standardized_difference | number ≥ 0, ≤ 5 | Your calibration | Optional |
| minimum_baseline_score_overlap | number ≥ 0, ≤ 1 | Your calibration | Optional |
| minimum_material_feedback_shift | number ≥ 0, ≤ 1 | Your calibration | Optional |
| minimum_material_operating_shift | number ≥ 0, ≤ 1 | Your calibration | Optional |
| observations | array of objects (7 fields) ≥ 200 items | Evidence | Yes |
| seed | integer | Numerical control | Optional |
Each observations
record
| Field | Type | Required |
|---|---|---|
| cluster_id | string (non-empty) | Yes |
| epoch | one of "pre", "post" | Yes |
| id | string (non-empty) | Yes |
| outcome | any | Yes |
| policy_group | one of "exposed", "comparison" | Yes |
| predicted_probability | number (≥ 0, ≤ 1) | Yes |
| weight | number (> 0) | Optional |
{
"bootstrap_draws": 500,
"minimum_material_feedback_shift": 0.05,
"observations": [
{
"cluster_id": "exposed-0",
"epoch": "pre",
"id": "feedback-exposed-0-pre-0",
"outcome": 1,
"policy_group": "exposed",
"predicted_probability": 0.36
},
{
"cluster_id": "exposed-0",
"epoch": "pre",
"id": "feedback-exposed-0-pre-1",
"outcome": 1,
"policy_group": "exposed",
"predicted_probability": 0.38
},
{
"cluster_id": "exposed-0",
"epoch": "pre",
"id": "feedback-exposed-0-pre-2",
"outcome": 0,
"policy_group": "exposed",
"predicted_probability": 0.39999999999999997
},
{
"cluster_id": "exposed-0",
"epoch": "pre",
"id": "feedback-exposed-0-pre-3",
"outcome": 0,
"policy_group": "exposed",
"predicted_probability": 0.42
},
{
"cluster_id": "exposed-0",
"epoch": "pre",
"id": "feedback-exposed-0-pre-4",
"outcome": 0,
"policy_group": "exposed",
"predicted_probability": 0.44
}, Truncated for display — the full payload is 1607 lines.
What you get back
This is the actual output of running the example above — computed by the same function the platform calls, not an illustration.
{
"assumptions": [
"Exposed and comparison clusters follow comparable counterfactual trends absent deployment; baseline balance and overlap are diagnostics, not proof.",
"Prediction, outcome, policy exposure, epoch, cluster membership, and outcome maturity are frozen from their historical versions.",
"The cluster bootstrap represents the dependence and assignment unit; interference across clusters is negligible or explicitly modeled elsewhere."
],
"baseline_comparability": {
"score_overlap_fraction": 1,
"standardized_differences": {
"outcome_rate": 0,
"predicted_probability": 0
}
},
"cluster_diagnostics": [
{
"calibration_residual_change": 0,
"cluster_id": "comparison-0",
"outcome_rate_change": 0,
"policy_group": "comparison"
},
{
"calibration_residual_change": 0,
"cluster_id": "comparison-1",
"outcome_rate_change": 0,
"policy_group": "comparison"
},
{
"calibration_residual_change": 0,
"cluster_id": "comparison-2",
"outcome_rate_change": 0,
"policy_group": "comparison"
},
{
"calibration_residual_change": 0,
"cluster_id": "comparison-3",
"outcome_rate_change": 0,
"policy_group": "comparison"
},
{
"calibration_residual_change": 0,
"cluster_id": "comparison-4",
"outcome_rate_change": 0,
"policy_group": "comparison"
}, Truncated for display — the full payload is 218 lines.
How it works
Forecasting & survival — Estimate when something completes or fails, with censoring and unresolved work handled honestly rather than dropped.
- 1 Freeze historical model probabilities, mature binary outcomes, deployment exposure, pre/post epochs, and the cluster-level assignment or dependence unit; require both epochs for every cluster and support in all four group-by-epoch cells.
- 2 Aggregate prediction, outcome, calibration-residual, and Brier changes inside clusters, then subtract the comparison-group change from the exposed-group change so common operating drift is not mislabeled model feedback.
- 3 Resample whole clusters independently within exposed and comparison groups to obtain uncertainty for every difference-in-differences metric; keep score-to-outcome feedback separate from an operating-level prediction or outcome shift.
- 4 Gate interpretation on prespecified pre-deployment standardized balance and central score-range overlap, and call a feedback signature only when a calibration-residual or Brier shift is both practically material and directionally supported.
Before you trust it
Every tool in the catalog ships with the conditions under which its answer is meaningful — and the conditions under which it should abstain instead of guessing.
Assumptions & guardrails
- Training examples precede their outcomes, censoring and unresolved work are represented, and deployment populations remain comparable to validation cohorts.
- Exposed and comparison clusters would have followed comparable score/outcome trends without deployment; baseline balance and overlap diagnose but cannot prove this parallel-trends condition.
- Historical probabilities come from the model version actually used at that time, outcomes share one maturity rule, policy exposure is immutable, and missing outcomes have not been coded as non-events.
- Cluster IDs represent assignment and within-unit dependence, while spillovers between exposed and comparison clusters are negligible or handled by a network-interference design.
- A predictive interval or risk estimate is not a deadline promise, causal explanation, or individual-performance judgment.
- A feedback signature is deployment-associated evidence, not proof that the model caused the change; policy adoption, concurrent interventions, and anticipatory behavior can violate parallel trends.
- A changed outcome can be beneficial policy response rather than harmful performativity, while a stable aggregate calibration residual can hide subgroup or tail feedback.
- Do not use this aggregate audit to infer an individual's gaming, intent, performance, employment status, or security risk.
Minimum evidence
- observations: at least 200 rows/items
How to validate it
Use chronological train/calibration/test windows, compare proper scores and decision value with a simple baseline, and recalibrate only from outcomes resolved after prediction time.
Calibrating it to your org
Same for everyone
The mathematical kernel, validation rules, method version, and JSON output semantics are organization-independent; no tenant-trained coefficients or company benchmark is embedded in the function.
Specific to you
- one complete pre/post exposed/comparison panel retaining every eligible prediction and mature outcome
- cluster-level assignment/dependence identifiers and frozen policy-version exposure
- model and policy versions, exposure rule, comparison design, epoch boundaries, cluster unit, outcome maturity, weights, balance and overlap gates, and material feedback thresholds
Calibration workflow
- 1 Define the management decision, target outcome, aggregate unit, privacy boundary, cadence, and prediction/intervention horizon for this organization.
- 2 Build a tenant-scoped historical cohort using only information available before each prediction or decision; preserve zero periods, censoring, assignment probabilities, and unresolved outcomes when the method requires them.
- 3 Estimate statistical parameters on training history, but obtain costs, utilities, risk tolerance, practical-effect thresholds, capacity, and policy constraints from accountable decision owners.
- 4 Validate on later time windows or held-out aggregate units at the deployment grain, against a simple baseline and the function-specific validation strategy.
- 5 Deploy only if the returned decision clears evidence, overlap, calibration, robustness, and guardrail checks; warning, unsupported, schema-gap, and fallback decisions are abstentions.
- 6 Monitor realized outcomes, data drift, coverage, and decision regret; recalibrate at a governed cadence or after a detected regime/definition change, never merely because a stakeholder dislikes the result.
Call it from your AI
You don't wire up 388 tools in your MCP client. The GitRevio MCP server exposes 18 tools, three of which let an agent search the catalog, read a tool's schema, and run it — so the assistant finds this one on its own.
gitrevio_capabilities_search
{ "q": "audit whether deploying a probabilitydriven policy" }
→ finds "audit_policy_feedback_performativity"
gitrevio_capability_describe
{ "capability_id": "audit_policy_feedback_performativity" }
→ returns the input schema and agent guidance shown on this page
gitrevio_capability_run
{ "capability_id": "audit_policy_feedback_performativity", "arguments": { ... } }
→ returns the result shown above Works in Claude Desktop, Claude Code, Cursor, Cline, Continue.dev, Goose and Aider. See the MCP server.
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