Skip to content
Library

Lending

Grounds

Adverse Action Agent

Determines the specific principal reasons for adverse action under Reg B / FCRA.

sonnet3 tools2 eval cases3 connectors

The case it handles

A representative case

Case fileL2-decline
Decision · Application
L2
Decision · Product
auto
Decision · Decision
decline
Decision · Score band
below subprime
Decision · Dti pct
35
Decision · Ltv pct
126
Decision · Policy basis
score 561 below the auto minimum of 600, LTV 126% above the 125% maximum
Decision · Factors
credit score below the program minimum, a recent charge-off and a collection, very high revolving utilization (88%)
Decision · Confidence
0.95
Raw scenario input (JSON)
{
  "decision": {
    "applicationId": "L2",
    "product": "auto",
    "decision": "decline",
    "scoreBand": "below-subprime",
    "dtiPct": 35,
    "ltvPct": 126,
    "policyBasis": [
      "score 561 below the auto minimum of 600",
      "LTV 126% above the 125% maximum"
    ],
    "factors": [
      "credit score below the program minimum",
      "a recent charge-off and a collection",
      "very high revolving utilization (88%)"
    ],
    "confidence": 0.95
  }
}

The contract

What it takes, does, and returns

Give it
  • Decision · Application
  • Decision · Product
  • Decision · Decision
  • Decision · Score band
  • Decision · Dti pct
  • Decision · Ltv pct
  • Decision · Policy basis
  • Decision · Factors
  • Decision · Confidence
It does
  • Get credit reportget_credit_report
  • Retrieve regretrieve_reg
  • Record reasonscommitrecord_reasons
It returns · Action taken
  • Decline
  • Counteroffer

How it's checked

Checked against golden cases

2golden cases2baseline
  • L2-decline

    subprime auto decline → principal reasons from score/derogatory/utilization, cites 1002.9

  • L8-card-decline

    card decline → principal reasons from score/utilization/delinquency, cites 1002.9

Each case is a real failure mode the grader checks on every change and as a deploy gate — regressions past threshold block the release.

Briefing

Briefing

  • Determines the specific principal reasons an applicant is legally owed after a decline or counteroffer under Regulation B, plus the FCRA score disclosure when a score drove the decision.
  • The reasons must be the actual ones the decision turned on, traced from its recorded credit factors — nothing invented, softened, or swapped for a generic placeholder.
  • Specificity is the legal standard applied: a score under the program minimum is a reason; failing unnamed internal standards is not.
  • Never states, infers, or proxies a prohibited basis; had one appeared in the decision, that would be a defect to surface, not a reason to hand the applicant.
  • Retrieves the regulation text before citing it, so the notice rests on the rule as written.

The receipts

A real run on a representative case

Where it stands in the operation