# ACE score (Felitti)

ACE

Status: LIVE
Price: $0.005 USDC
`GET /api/calc/ace`
HTML: https://magentlab.com/docs/ace
Markdown: https://magentlab.com/docs/ace.md

Not a medical device. Not a diagnosis, dose, or listing recommendation.

## What it computes

Sum seven caller-assigned Felitti 1998 ACE Study exposure categories (1 point each, max 7) and return the published analysis band (0, 1, 2, 3, or ≥4).

## When to use

When an agent has already assigned the seven Felitti 1998 ACE Study category flags and needs the published category count and analysis band, not a diagnosis, trauma inventory, or 10-item ACE-Q.

## When not to use

- Not a medical device and not a diagnosis, trauma inventory, or treatment order.
- Each of the seven categories is a caller-assigned true or false. magent does not interpret the items.
- This is Felitti 1998 seven categories only (psychological abuse, physical abuse, sexual abuse, mother treated violently, household substance abuse, household mental illness, household incarceration; max 7). magent does not add later 10-item neglect or parental-separation items from Dube 2004 or CDC BRFSS. Not the 10-item ACE-Q.
- Analysis bands follow this paper: score 0, 1, 2, 3, and ≥4 (ace_band ge_4). The score is a count of exposure categories, not a diagnosis.

## Formula

```
ACE = psychological_abuse + physical_abuse + sexual_abuse + mother_treated_violently + household_substance_abuse + household_mental_illness + household_incarceration; each 1 if true; max 7
```

## Citation

[Relationship of childhood abuse and household dysfunction to many of the leading causes of death in adults. The Adverse Childhood Experiences (ACE) Study](https://doi.org/10.1016/S0749-3797(98)00017-8)
Felitti VJ, Anda RF, Nordenberg D, et al.
Am J Prev Med. 1998;14(4):245-258
DOI: [10.1016/S0749-3797(98)00017-8](https://doi.org/10.1016/S0749-3797(98)00017-8)

## Worked example

### All seven false

Given: `household_incarceration=false, household_mental_illness=false, household_substance_abuse=false, mother_treated_violently=false, physical_abuse=false, psychological_abuse=false, sexual_abuse=false`

1. psychological_abuse + physical_abuse + sexual_abuse + mother_treated_violently + household_substance_abuse + household_mental_illness + household_incarceration
2. Score = 0 (max 7); ace_band 0


### Four categories

Given: `household_incarceration=false, household_mental_illness=false, household_substance_abuse=false, mother_treated_violently=true, physical_abuse=true, psychological_abuse=true, sexual_abuse=true`

1. Score = 4
2. ace_band ge_4 (Felitti 1998 ≥4 band)


## Also searched as

- ACE score
- adverse childhood experiences
- Felitti ACE Study
- ACE questionnaire
- seven-category ACE
- Felitti 1998 ACE
- childhood abuse household dysfunction

## Parameters

- `psychological_abuse` (boolean, required): Caller-assigned Felitti 1998 ACE Study psychological-abuse category (a parent or other adult in the household often or very often swore at, insulted, or put the respondent down, or acted in a way that made the respondent afraid of being physically hurt). true or false. magent does not interpret the item.
- `physical_abuse` (boolean, required): Caller-assigned Felitti 1998 ACE Study physical-abuse category (a parent or other adult in the household often or very often pushed, grabbed, slapped, or threw something at the respondent, or ever hit the respondent so hard that there were marks or injury). true or false. magent does not interpret the item.
- `sexual_abuse` (boolean, required): Caller-assigned Felitti 1998 ACE Study sexual-abuse category (an adult or person at least 5 years older touched or fondled the respondent in a sexual way, had the respondent touch their body in a sexual way, or attempted or completed oral, anal, or vaginal intercourse). true or false. magent does not interpret the item.
- `mother_treated_violently` (boolean, required): Caller-assigned Felitti 1998 ACE Study mother-treated-violently category (mother or stepmother was pushed, grabbed, slapped, had something thrown at her, kicked, bitten, hit with a fist or hard object, repeatedly hit, or threatened or hurt with a knife or gun). true or false. magent does not interpret the item.
- `household_substance_abuse` (boolean, required): Caller-assigned Felitti 1998 ACE Study household substance-abuse category (lived with anyone who was a problem drinker or alcoholic, or who used street drugs). true or false. magent does not interpret the item.
- `household_mental_illness` (boolean, required): Caller-assigned Felitti 1998 ACE Study household mental-illness category (a household member was depressed or mentally ill, or a household member attempted suicide). true or false. magent does not interpret the item.
- `household_incarceration` (boolean, required): Caller-assigned Felitti 1998 ACE Study criminal-behavior-in-household category (a household member went to prison). true or false. magent does not interpret the item.

## Bulk (POST)

POST the same path with a JSON items array. The first item is the GET unit; each additional item is $0.002. Invalid items return HTTP 400 before settlement.

Method: `POST /api/calc/ace`
Max items: 25
Price: unit_amount + extra_item_amount * (n - 1) (unit 5000 atomic, extra 2000 atomic)
Status: PREVIEW

- 1 to 25 items. Each item uses the same keys as the GET query parameters.
- POST of 1 item costs the same as GET. Lists longer than 25: chunk into multiple POSTs. Extra items still execute; do not pad dummy rows.
- The first invalid item fails the whole request (index in the 400 JSON). You are not charged.
- HTTP 200 is {count, path, items}. Each items[i] is the GET 200 body for that row.
- Catalog misses (empty matches, found=false) stay paid 200s inside that slot.
- x402 resource URL is this path plus n and body_sha256. Browsers that prefer text/html get the same paywall as GET; Pay retries POST with the same items.

Example request:

```json
{
  "items": [
    {
      "household_incarceration": "false",
      "household_mental_illness": "false",
      "household_substance_abuse": "false",
      "mother_treated_violently": "false",
      "physical_abuse": "false",
      "psychological_abuse": "false",
      "sexual_abuse": "false"
    },
    {
      "household_incarceration": "false",
      "household_mental_illness": "false",
      "household_substance_abuse": "false",
      "mother_treated_violently": "false",
      "physical_abuse": "false",
      "psychological_abuse": "false",
      "sexual_abuse": "false"
    }
  ]
}
```

Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/ace

Example 200:

```json
{
  "count": 2,
  "path": "/api/calc/ace",
  "items": [
    {
      "components": [
        {
          "factor": "psychological_abuse",
          "points": 0,
          "present": false
        },
        {
          "factor": "physical_abuse",
          "points": 0,
          "present": false
        },
        {
          "factor": "sexual_abuse",
          "points": 0,
          "present": false
        },
        {
          "factor": "mother_treated_violently",
          "points": 0,
          "present": false
        },
        {
          "factor": "household_substance_abuse",
          "points": 0,
          "present": false
        },
        {
          "factor": "household_mental_illness",
          "points": 0,
          "present": false
        },
        {
          "factor": "household_incarceration",
          "points": 0,
          "present": false
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "citation": {
        "authors": "Felitti VJ, Anda RF, Nordenberg D, et al.",
        "doi": "10.1016/S0749-3797(98)00017-8",
        "id": "felitti-1998",
        "source": "Am J Prev Med. 1998;14(4):245-258",
        "title": "Relationship of childhood abuse and household dysfunction to many of the leading causes of death in adults. The Adverse Childhood Experiences (ACE) Study"
      },
      "formula": "ace",
      "formula_expression": "ACE = psychological_abuse + physical_abuse + sexual_abuse + mother_treated_violently + household_substance_abuse + household_mental_illness + household_incarceration; each 1 if true; max 7",
      "max_score": 7,
      "score": 0,
      "ace_band": "0"
    },
    {
      "components": [
        {
          "factor": "psychological_abuse",
          "points": 0,
          "present": false
        },
        {
          "factor": "physical_abuse",
          "points": 0,
          "present": false
        },
        {
          "factor": "sexual_abuse",
          "points": 0,
          "present": false
        },
        {
          "factor": "mother_treated_violently",
          "points": 0,
          "present": false
        },
        {
          "factor": "household_substance_abuse",
          "points": 0,
          "present": false
        },
        {
          "factor": "household_mental_illness",
          "points": 0,
          "present": false
        },
        {
          "factor": "household_incarceration",
          "points": 0,
          "present": false
        }
      ],
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "citation": {
        "authors": "Felitti VJ, Anda RF, Nordenberg D, et al.",
        "doi": "10.1016/S0749-3797(98)00017-8",
        "id": "felitti-1998",
        "source": "Am J Prev Med. 1998;14(4):245-258",
        "title": "Relationship of childhood abuse and household dysfunction to many of the leading causes of death in adults. The Adverse Childhood Experiences (ACE) Study"
      },
      "formula": "ace",
      "formula_expression": "ACE = psychological_abuse + physical_abuse + sexual_abuse + mother_treated_violently + household_substance_abuse + household_mental_illness + household_incarceration; each 1 if true; max 7",
      "max_score": 7,
      "score": 0,
      "ace_band": "0"
    }
  ]
}
```

## Response fields

- `formula` (string): ace
- `formula_expression` (string): Exact expression used
- `score` (integer): ACE category count 0-7
- `max_score` (integer): 7
- `ace_band` (string): Felitti 1998 analysis band: 0, 1, 2, 3, or ge_4 (score ≥4). A count of exposure categories, not a diagnosis.
- `components` (array): Per-category points
- `citation` (object): Felitti et al. Am J Prev Med 1998 citation
- `disclaimer` (string): Not-a-device notice

## Example JSON

Frozen fixture. Not a live lookup.

```json
{
  "components": [
    {
      "factor": "psychological_abuse",
      "points": 0,
      "present": false
    },
    {
      "factor": "physical_abuse",
      "points": 0,
      "present": false
    },
    {
      "factor": "sexual_abuse",
      "points": 0,
      "present": false
    },
    {
      "factor": "mother_treated_violently",
      "points": 0,
      "present": false
    },
    {
      "factor": "household_substance_abuse",
      "points": 0,
      "present": false
    },
    {
      "factor": "household_mental_illness",
      "points": 0,
      "present": false
    },
    {
      "factor": "household_incarceration",
      "points": 0,
      "present": false
    }
  ],
  "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
  "citation": {
    "authors": "Felitti VJ, Anda RF, Nordenberg D, et al.",
    "doi": "10.1016/S0749-3797(98)00017-8",
    "id": "felitti-1998",
    "source": "Am J Prev Med. 1998;14(4):245-258",
    "title": "Relationship of childhood abuse and household dysfunction to many of the leading causes of death in adults. The Adverse Childhood Experiences (ACE) Study"
  },
  "formula": "ace",
  "formula_expression": "ACE = psychological_abuse + physical_abuse + sexual_abuse + mother_treated_violently + household_substance_abuse + household_mental_illness + household_incarceration; each 1 if true; max 7",
  "max_score": 7,
  "score": 0,
  "ace_band": "0"
}
```

## Errors

- HTTP 400 `invalid_flag`: boolean clinical flags must be true or false Returned before settlement; you are not charged.
- HTTP 400 `invalid_items`: POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
- HTTP 400 `invalid_item_count`: items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
- HTTP 400 `invalid_item`: each items entry must be a JSON object Returned before settlement; you are not charged.

Shared HTTP 402 and 503: https://magentlab.com/docs/payments

## Related tools

- [PHQ-9](https://magentlab.com/docs/phq-9) — Sum nine caller-assigned Kroenke 2001 PHQ-9 integers (0-3) and return the published total (max 27), severity cutpoints, and ≥10 screen.
- [PC-PTSD-5](https://magentlab.com/docs/pc-ptsd-5) — Apply the Prins 2016 PC-PTSD-5 trauma-exposure gate and sum five caller-assigned past-month yes/no items (max 5). Return whether the score is at or above that paper's optimally sensitive cut of 3.
- [GAD-7](https://magentlab.com/docs/gad-7) — Sum seven caller-assigned Spitzer 2006 GAD-7 integers (0-3) and return the published 0-21 total, 5/10/15 severity cuts, and ≥10 case-finding flag.

## Payment

Unpaid requests return HTTP 402 even if query parameters or POST items are missing or invalid, so CDP and agents can index the path. After a PAYMENT-SIGNATURE, invalid params return HTTP 400 JSON before settlement. magent does not charge. Fix the params, then request a new 402 quote for that complete URL. Catalog misses (empty matches, found=false) are valid paid 200s.

- GET the tool with Accept: application/json (do not send Accept: text/html unless you want the human paywall).
- HTTP 402 means you have not paid. Decode the base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote.
- Sign accepts[0] (exact, EIP-3009) with validBefore = now + maxTimeoutSeconds (600 seconds), or accepts[1] (batch-settlement deposit/voucher) on product GET. Ping and POST {items} stay exact. Magent retries transient facilitator 429/5xx before answering.
- Retry the same URL with PAYMENT-SIGNATURE (base64 JSON of accepted and payload). Magent attaches canonical extensions.bazaar on CDP verify/settle; echoing 402 bazaar is optional.
- Success is HTTP 200 JSON plus PAYMENT-RESPONSE. exact settles before the tool. batch-settlement verifies (and deposit-settles) before the tool and commits the charge after HTTP 2xx. HTTP 503: retry the same PAYMENT-SIGNATURE. Mint a new exact nonce only after a new HTTP 402.

- offered `exact` on eip155:8453: Fixed-price USDC on Base. The buyer authorizes the advertised amount (EIP-3009). magent settles before the tool runs (paymentFlow upfront). extra.assetTransferMethod=eip3009 extra.paymentFlow=upfront.
- offered `batch-settlement` on eip155:8453: Payment-channel vouchers claimed later in batches. Exact stays accepts[0]. Same-path POST {items} is still exact. extra.assetTransferMethod=eip3009 extra.paymentFlow=authorization.

- not offered `upto`: Not offered. Usage-based: buyer authorizes a ceiling, seller settles the actual amount after work. Reserved for a future metered tool. Not for current calculators or code search.

Same-path POST {items} is still scheme exact: one EIP-3009 authorization for GET unit plus $0.002 per extra item. That is not x402 batch-settlement (payment channels / vouchers).

Shared HTTP 402 and 503 table: https://magentlab.com/docs/payments

Stdio MCP (one process per host): https://magentlab.com/docs/mcp

## Guarantees

- HTTP 402 is unpaid, including a missing query. After PAYMENT-SIGNATURE, invalid parameters return HTTP 400 before settlement. You are not charged. HTTP 402 never includes the tool JSON.
- exact: settlement finishes before the tool (paymentFlow upfront). batch-settlement: verify/deposit before the tool; chargedCumulativeAmount commits after HTTP 2xx. Uncertain or failed settlement fails closed (HTTP 503). Retry the same PAYMENT-SIGNATURE.
- HTTP 402 is unpaid only. Do not sign a second authorization because of a 503.
- Execution is timeout-bounded and concurrency-capped.
- Calculator inputs are stored encrypted for allowlisted operators (Magent Console). They are not in public logs, SSH lookups, catalog, or rollups. Request logs store path without query.
