ACE score (Felitti)

ACE

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).

LIVE $0.005 USDC GET /api/calc/ace

Markdown: /docs/ace.md · Canonical: https://magentlab.com/docs/ace

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

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

Worked example

All seven false

Given: household_incarceration=falsehousehold_mental_illness=falsehousehold_substance_abuse=falsemother_treated_violently=falsephysical_abuse=falsepsychological_abuse=falsesexual_abuse=false

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

Four categories

Given: household_incarceration=falsehousehold_mental_illness=falsehousehold_substance_abuse=falsemother_treated_violently=truephysical_abuse=truepsychological_abuse=truesexual_abuse=true

Score = 4
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

Try

Opens the live endpoint. Unpaid browser requests show the paywall; agents should send Accept: application/json.

/api/calc/ace?psychological_abuse=false&physical_abuse=false&sexual_abuse=false&mother_treated_violently=false&household_substance_abuse=false&household_mental_illness=false&household_incarceration=false

Full URL: https://api.magentlab.com/api/calc/ace?psychological_abuse=false&physical_abuse=false&sexual_abuse=false&mother_treated_violently=false&household_substance_abuse=false&household_mental_illness=false&household_incarceration=false

Call

Expect HTTP 402 until you retry with PAYMENT-SIGNATURE. Incomplete query params return HTTP 400 before any quote or charge.

curl -i -H "Accept: application/json" "https://api.magentlab.com/api/calc/ace?psychological_abuse=false&physical_abuse=false&sexual_abuse=false&mother_treated_violently=false&household_substance_abuse=false&household_mental_illness=false&household_incarceration=false"

Parameters

Name	Type	Required	Description
`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.

POST /api/calc/ace Max 25 unit_amount + extra_item_amount * (n - 1) extra $0.002 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 (fixture)

{
  "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"
    }
  ]
}

Open bulk paywall →

Opens a two-item fixture on the API host. Unpaid browsers get the same MetaMask paywall as GET; Pay retries POST with those items.

Example 200 (fixture)

{
  "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

Field	Type	Description
`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

Machine form of the same example. Frozen fixture. Not a live lookup.

{
  "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"
}

Client errors (HTTP 400)

Invalid params return 400 without charge. Shared HTTP 402 and 503 meanings: Payments.

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

Related tools

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 — 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 — 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. Unpaid valid requests return HTTP 402 with a base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote: retry the same PAYMENT-SIGNATURE. Full handshake and shared payment errors: Payments. Stdio MCP: /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.