GO-FAR score

GO-FAR

Sum the Ebell 2013 GO-FAR Table 3 integer score (beta × 10 rounded) from exclusive age and 12 caller-assigned prearrest flags, and return the published likelihood band for CPC 1 after in-hospital CPR.

LIVE $0.005 USDC GET /api/calc/go_far

Markdown: /docs/go-far.md · Canonical: https://magentlab.com/docs/go-far

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

What it computes

When to use

When an agent already has Ebell 2013 GO-FAR prearrest items assigned and needs the published −15 to 76 total and likelihood band (very_low / low / average / above_average) for CPC 1 after IHCA, not a code-status order and not GO-FAR 2.

When not to use

Not a medical device. Not a diagnosis. Not a DNAR or code-status order. magent does not assign code status.
Ebell 2013 GO-FAR Table 3 integer score only. Not GO-FAR 2.
Outcome is CPC 1 (neurologically intact or minimal deficits) after in-hospital CPR as published. magent does not examine the patient; every flag is caller-assigned, including CPC 1 at admission.
Age bands are mutually exclusive (<70 = 0, 70-74 = 2, 75-79 = 5, 80-84 = 6, >=85 = 11).
risk_band is a published likelihood-grouping token only. magent does not emit the paper's cohort percents as if it measured this patient.

Formula

GO-FAR = exclusive age (<70: 0, 70-74: 2, 75-79: 5, 80-84: 6, >=85: 11) + Table 3 flags (neurologically intact -15, major trauma 10, acute stroke 8, metastatic or hematologic cancer 7, septicemia 7, medical noncardiac 7, hepatic insufficiency 6, admit from SNF 6, hypotension or hypoperfusion 5, renal insufficiency or dialysis 4, respiratory insufficiency 4, pneumonia 1); range -15 to 76; >=24 very_low, 14-23 low, -5 to 13 average, <=-6 above_average (Ebell 2013)

Citation

Title: Development and Validation of the Good Outcome Following Attempted Resuscitation (GO-FAR) Score to Predict Neurologically Intact Survival After In-Hospital Cardiopulmonary Resuscitation
Authors: Ebell MH, Jang W, Shen Y, Geocadin RG, et al
Source: JAMA Intern Med. 2013;173(20):1872-1878
DOI: 10.1001/jamainternmed.2013.10037

Worked example

Age 60, all flags false

Given: acute_stroke=falseadmit_from_skilled_nursing=falseage=60hepatic_insufficiency=falsehypotension_or_hypoperfusion=falsemajor_trauma=falsemedical_noncardiac_diagnosis=falsemetastatic_or_hematologic_cancer=falseneurologically_intact_or_minimal_deficits=falsepneumonia=falserenal_insufficiency_or_dialysis=falserespiratory_insufficiency=falsesepticemia=false

Age 60 is younger than 70 → 0; all 12 flags false → 0
Score = 0 (max 76); risk_band average

Also searched as

GO-FAR score
Good Outcome Following Attempted Resuscitation
Ebell GO-FAR
in-hospital CPR neurologic survival
GO-FAR 2013
CPC 1 after IHCA
prearrest resuscitation score

Try

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

/api/calc/go_far?age=60&neurologically_intact_or_minimal_deficits=false&major_trauma=false&acute_stroke=false&metastatic_or_hematologic_cancer=false&septicemia=false&medical_noncardiac_diagnosis=false&hepatic_insufficiency=false&admit_from_skilled_nursing=false&hypotension_or_hypoperfusion=false&renal_insufficiency_or_dialysis=false&respiratory_insufficiency=false&pneumonia=false

Full URL: https://api.magentlab.com/api/calc/go_far?age=60&neurologically_intact_or_minimal_deficits=false&major_trauma=false&acute_stroke=false&metastatic_or_hematologic_cancer=false&septicemia=false&medical_noncardiac_diagnosis=false&hepatic_insufficiency=false&admit_from_skilled_nursing=false&hypotension_or_hypoperfusion=false&renal_insufficiency_or_dialysis=false&respiratory_insufficiency=false&pneumonia=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/go_far?age=60&neurologically_intact_or_minimal_deficits=false&major_trauma=false&acute_stroke=false&metastatic_or_hematologic_cancer=false&septicemia=false&medical_noncardiac_diagnosis=false&hepatic_insufficiency=false&admit_from_skilled_nursing=false&hypotension_or_hypoperfusion=false&renal_insufficiency_or_dialysis=false&respiratory_insufficiency=false&pneumonia=false"

Parameters

Name	Type	Required	Description
`age`	integer	required	Age in years (18-120). Ebell 2013 exclusive bands: younger than 70 scores 0; 70-74 scores 2; 75-79 scores 5; 80-84 scores 6; 85 or older scores 11. Age 69 scores 0; 70 scores 2.
`neurologically_intact_or_minimal_deficits`	boolean	required	Neurologically intact or with minimal deficits at admission (CPC 1) as assigned by the caller (Ebell 2013 Table 3). true scores -15. false scores 0. magent does not assign CPC or examine the patient.
`major_trauma`	boolean	required	Major trauma as assigned by the caller (Ebell 2013 Table 3). true scores 10. magent does not examine the patient.
`acute_stroke`	boolean	required	Acute stroke as assigned by the caller (Ebell 2013 Table 3). true scores 8. magent does not diagnose stroke.
`metastatic_or_hematologic_cancer`	boolean	required	Metastatic or hematologic cancer as assigned by the caller (Ebell 2013 Table 3). true scores 7. magent does not diagnose cancer.
`septicemia`	boolean	required	Septicemia as assigned by the caller (Ebell 2013 Table 3). true scores 7. magent does not diagnose infection.
`medical_noncardiac_diagnosis`	boolean	required	Medical noncardiac diagnosis as assigned by the caller (Ebell 2013 Table 3). true scores 7. Independent of the other flags.
`hepatic_insufficiency`	boolean	required	Hepatic insufficiency as assigned by the caller (Ebell 2013 Table 3). true scores 6. magent does not grade liver tests.
`admit_from_skilled_nursing`	boolean	required	Admitted from a skilled nursing facility as assigned by the caller (Ebell 2013 Table 3). true scores 6.
`hypotension_or_hypoperfusion`	boolean	required	Hypotension or hypoperfusion as assigned by the caller (Ebell 2013 Table 3). true scores 5. magent does not take blood pressure.
`renal_insufficiency_or_dialysis`	boolean	required	Renal insufficiency or dialysis as assigned by the caller (Ebell 2013 Table 3). true scores 4. magent does not grade creatinine.
`respiratory_insufficiency`	boolean	required	Respiratory insufficiency as assigned by the caller (Ebell 2013 Table 3). true scores 4. magent does not interpret blood gas or ventilator settings.
`pneumonia`	boolean	required	Pneumonia as assigned by the caller (Ebell 2013 Table 3). true scores 1. magent does not diagnose pneumonia.

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/go_far 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": [
    {
      "acute_stroke": "false",
      "admit_from_skilled_nursing": "false",
      "age": "60",
      "hepatic_insufficiency": "false",
      "hypotension_or_hypoperfusion": "false",
      "major_trauma": "false",
      "medical_noncardiac_diagnosis": "false",
      "metastatic_or_hematologic_cancer": "false",
      "neurologically_intact_or_minimal_deficits": "false",
      "pneumonia": "false",
      "renal_insufficiency_or_dialysis": "false",
      "respiratory_insufficiency": "false",
      "septicemia": "false"
    },
    {
      "acute_stroke": "false",
      "admit_from_skilled_nursing": "false",
      "age": "60",
      "hepatic_insufficiency": "false",
      "hypotension_or_hypoperfusion": "false",
      "major_trauma": "false",
      "medical_noncardiac_diagnosis": "false",
      "metastatic_or_hematologic_cancer": "false",
      "neurologically_intact_or_minimal_deficits": "false",
      "pneumonia": "false",
      "renal_insufficiency_or_dialysis": "false",
      "respiratory_insufficiency": "false",
      "septicemia": "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/go_far",
  "items": [
    {
      "components": [
        {
          "value": 60,
          "factor": "age",
          "points": 0,
          "present": false
        },
        {
          "factor": "neurologically_intact_or_minimal_deficits",
          "points": 0,
          "present": false
        },
        {
          "factor": "major_trauma",
          "points": 0,
          "present": false
        },
        {
          "factor": "acute_stroke",
          "points": 0,
          "present": false
        },
        {
          "factor": "metastatic_or_hematologic_cancer",
          "points": 0,
          "present": false
        },
        {
          "factor": "septicemia",
          "points": 0,
          "present": false
        },
        {
          "factor": "medical_noncardiac_diagnosis",
          "points": 0,
          "present": false
        },
        {
          "factor": "hepatic_insufficiency",
          "points": 0,
          "present": false
        },
        {
          "factor": "admit_from_skilled_nursing",
          "points": 0,
          "present": false
        },
        {
          "factor": "hypotension_or_hypoperfusion",
          "points": 0,
          "present": false
        },
        {
          "factor": "renal_insufficiency_or_dialysis",
          "points": 0,
          "present": false
        },
        {
          "factor": "respiratory_insufficiency",
          "points": 0,
          "present": false
        },
        {
          "factor": "pneumonia",
          "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": "Ebell MH, Jang W, Shen Y, Geocadin RG, et al",
        "doi": "10.1001/jamainternmed.2013.10037",
        "id": "ebell-2013",
        "pmid": "24018585",
        "source": "JAMA Intern Med. 2013;173(20):1872-1878",
        "title": "Development and Validation of the Good Outcome Following Attempted Resuscitation (GO-FAR) Score to Predict Neurologically Intact Survival After In-Hospital Cardiopulmonary Resuscitation"
      },
      "formula": "go_far",
      "formula_expression": "GO-FAR = exclusive age (<70: 0, 70-74: 2, 75-79: 5, 80-84: 6, >=85: 11) + Table 3 flags (neurologically intact -15, major trauma 10, acute stroke 8, metastatic or hematologic cancer 7, septicemia 7, medical noncardiac 7, hepatic insufficiency 6, admit from SNF 6, hypotension or hypoperfusion 5, renal insufficiency or dialysis 4, respiratory insufficiency 4, pneumonia 1); range -15 to 76; >=24 very_low, 14-23 low, -5 to 13 average, <=-6 above_average (Ebell 2013)",
      "age_years": 60,
      "max_score": 76,
      "score": 0,
      "risk_band": "average"
    },
    {
      "components": [
        {
          "value": 60,
          "factor": "age",
          "points": 0,
          "present": false
        },
        {
          "factor": "neurologically_intact_or_minimal_deficits",
          "points": 0,
          "present": false
        },
        {
          "factor": "major_trauma",
          "points": 0,
          "present": false
        },
        {
          "factor": "acute_stroke",
          "points": 0,
          "present": false
        },
        {
          "factor": "metastatic_or_hematologic_cancer",
          "points": 0,
          "present": false
        },
        {
          "factor": "septicemia",
          "points": 0,
          "present": false
        },
        {
          "factor": "medical_noncardiac_diagnosis",
          "points": 0,
          "present": false
        },
        {
          "factor": "hepatic_insufficiency",
          "points": 0,
          "present": false
        },
        {
          "factor": "admit_from_skilled_nursing",
          "points": 0,
          "present": false
        },
        {
          "factor": "hypotension_or_hypoperfusion",
          "points": 0,
          "present": false
        },
        {
          "factor": "renal_insufficiency_or_dialysis",
          "points": 0,
          "present": false
        },
        {
          "factor": "respiratory_insufficiency",
          "points": 0,
          "present": false
        },
        {
          "factor": "pneumonia",
          "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": "Ebell MH, Jang W, Shen Y, Geocadin RG, et al",
        "doi": "10.1001/jamainternmed.2013.10037",
        "id": "ebell-2013",
        "pmid": "24018585",
        "source": "JAMA Intern Med. 2013;173(20):1872-1878",
        "title": "Development and Validation of the Good Outcome Following Attempted Resuscitation (GO-FAR) Score to Predict Neurologically Intact Survival After In-Hospital Cardiopulmonary Resuscitation"
      },
      "formula": "go_far",
      "formula_expression": "GO-FAR = exclusive age (<70: 0, 70-74: 2, 75-79: 5, 80-84: 6, >=85: 11) + Table 3 flags (neurologically intact -15, major trauma 10, acute stroke 8, metastatic or hematologic cancer 7, septicemia 7, medical noncardiac 7, hepatic insufficiency 6, admit from SNF 6, hypotension or hypoperfusion 5, renal insufficiency or dialysis 4, respiratory insufficiency 4, pneumonia 1); range -15 to 76; >=24 very_low, 14-23 low, -5 to 13 average, <=-6 above_average (Ebell 2013)",
      "age_years": 60,
      "max_score": 76,
      "score": 0,
      "risk_band": "average"
    }
  ]
}

Response

Field	Type	Description
`formula`	string	go_far
`formula_expression`	string	Exact expression used
`score`	integer	Ebell 2013 Table 3 GO-FAR points -15 to 76
`max_score`	integer	76 (all adverse flags, not intact, age >=85)
`risk_band`	string	Ebell 2013 likelihood of CPC 1 after IHCA: very_low (score >=24), low (14-23), average (-5 to 13), or above_average (score <=-6). A band token, not a measured percent and not a DNAR order.
`age_years`	integer	Age used for the exclusive age band
`components`	array	Per-factor points
`citation`	object	Ebell JAMA Intern Med 2013 citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "value": 60,
      "factor": "age",
      "points": 0,
      "present": false
    },
    {
      "factor": "neurologically_intact_or_minimal_deficits",
      "points": 0,
      "present": false
    },
    {
      "factor": "major_trauma",
      "points": 0,
      "present": false
    },
    {
      "factor": "acute_stroke",
      "points": 0,
      "present": false
    },
    {
      "factor": "metastatic_or_hematologic_cancer",
      "points": 0,
      "present": false
    },
    {
      "factor": "septicemia",
      "points": 0,
      "present": false
    },
    {
      "factor": "medical_noncardiac_diagnosis",
      "points": 0,
      "present": false
    },
    {
      "factor": "hepatic_insufficiency",
      "points": 0,
      "present": false
    },
    {
      "factor": "admit_from_skilled_nursing",
      "points": 0,
      "present": false
    },
    {
      "factor": "hypotension_or_hypoperfusion",
      "points": 0,
      "present": false
    },
    {
      "factor": "renal_insufficiency_or_dialysis",
      "points": 0,
      "present": false
    },
    {
      "factor": "respiratory_insufficiency",
      "points": 0,
      "present": false
    },
    {
      "factor": "pneumonia",
      "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": "Ebell MH, Jang W, Shen Y, Geocadin RG, et al",
    "doi": "10.1001/jamainternmed.2013.10037",
    "id": "ebell-2013",
    "pmid": "24018585",
    "source": "JAMA Intern Med. 2013;173(20):1872-1878",
    "title": "Development and Validation of the Good Outcome Following Attempted Resuscitation (GO-FAR) Score to Predict Neurologically Intact Survival After In-Hospital Cardiopulmonary Resuscitation"
  },
  "formula": "go_far",
  "formula_expression": "GO-FAR = exclusive age (<70: 0, 70-74: 2, 75-79: 5, 80-84: 6, >=85: 11) + Table 3 flags (neurologically intact -15, major trauma 10, acute stroke 8, metastatic or hematologic cancer 7, septicemia 7, medical noncardiac 7, hepatic insufficiency 6, admit from SNF 6, hypotension or hypoperfusion 5, renal insufficiency or dialysis 4, respiratory insufficiency 4, pneumonia 1); range -15 to 76; >=24 very_low, 14-23 low, -5 to 13 average, <=-6 above_average (Ebell 2013)",
  "age_years": 60,
  "max_score": 76,
  "score": 0,
  "risk_band": "average"
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_age`	age must be an integer from 18 to 120 Returned before settlement; you are not charged.
400	`invalid_flag`	boolean clinical flags must be true or false Returned before settlement; you are not charged.
400	`invalid_go_far`	each GO-FAR 2013 item must be a published value for that field. 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

NEWS — Compute the RCP 2012 National Early Warning Score from respiratory rate, SpO2, supplemental oxygen, temperature, systolic BP, heart rate, and caller-assigned AVPU.

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.