MAGENT

Hematology · LIVE

ECOG performance status (Oken)

ECOG

Return the Oken 1982 ECOG performance status grade 0-4 from a caller-assigned integer, with a stable label.

LIVE $0.005 USDC GET /api/calc/ecog

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

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

What it computes

Return the Oken 1982 ECOG performance status grade 0-4 from a caller-assigned integer, with a stable label.

When to use

When an agent already has an ECOG grade 0-4 as in Oken 1982 and needs the published score and label. magent does not observe the patient or assign performance status. Not Karnofsky.

When not to use

  • Not a medical device and not a performance-status assignment. magent does not observe the patient.
  • Oken 1982 grades 0-4 only. Grade 5 (dead) is not scored.
  • The caller assigns ecog 0-4. magent does not examine the patient or convert Karnofsky scores.

Formula

ECOG performance status = caller-assigned integer 0-4 (Oken 1982); max 4; grade 5 (dead) is not scored

Citation

Title
Toxicity and response criteria of the Eastern Cooperative Oncology Group
Authors
Oken MM, Creech RH, Tormey DC, Horton J, Davis TE, McFadden ET, Carbone PP
Source
Am J Clin Oncol. 1982;5(6):649-655
DOI
10.1097/00000421-198212000-00014

Worked example

ECOG 0 fully active

Given: ecog=0

  1. ecog 0 → score 0; max 4; ecog_grade 0; fully_active

ECOG 4 completely disabled

Given: ecog=4

  1. ecog 4 → score 4; max 4; ecog_grade 4; disabled

Also searched as

  • ECOG performance status
  • ECOG PS
  • Oken ECOG
  • Eastern Cooperative Oncology Group
  • ECOG grade
  • performance status 0-4
  • ECOG 0-4

Try

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

/api/calc/ecog?ecog=0

Full URL: https://api.magentlab.com/api/calc/ecog?ecog=0

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/ecog?ecog=0"

Parameters

Name Type Required Description
ecog integer required Oken 1982 ECOG performance status 0-4 as assigned by the caller (0 fully active; 1 restricted strenuous activity, ambulatory, light work; 2 ambulatory, all self-care, unable to work, up >50% waking hours; 3 limited self-care, bed/chair >50% waking hours; 4 completely disabled, no self-care, totally bed/chair). Grade 5 (dead) is not scored. magent does not observe the patient.

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/ecog 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": [
    {
      "ecog": "0"
    },
    {
      "ecog": "0"
    }
  ]
}

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/ecog",
  "items": [
    {
      "components": [
        {
          "factor": "ecog",
          "points": 0,
          "present": true
        }
      ],
      "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": "Oken MM, Creech RH, Tormey DC, Horton J, Davis TE, McFadden ET, Carbone PP",
        "doi": "10.1097/00000421-198212000-00014",
        "id": "oken-1982",
        "pmid": "7165009",
        "source": "Am J Clin Oncol. 1982;5(6):649-655",
        "title": "Toxicity and response criteria of the Eastern Cooperative Oncology Group"
      },
      "formula": "ecog",
      "formula_expression": "ECOG performance status = caller-assigned integer 0-4 (Oken 1982); max 4; grade 5 (dead) is not scored",
      "max_score": 4,
      "score": 0,
      "ecog_grade": 0,
      "ecog_label": "fully_active"
    },
    {
      "components": [
        {
          "factor": "ecog",
          "points": 0,
          "present": true
        }
      ],
      "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": "Oken MM, Creech RH, Tormey DC, Horton J, Davis TE, McFadden ET, Carbone PP",
        "doi": "10.1097/00000421-198212000-00014",
        "id": "oken-1982",
        "pmid": "7165009",
        "source": "Am J Clin Oncol. 1982;5(6):649-655",
        "title": "Toxicity and response criteria of the Eastern Cooperative Oncology Group"
      },
      "formula": "ecog",
      "formula_expression": "ECOG performance status = caller-assigned integer 0-4 (Oken 1982); max 4; grade 5 (dead) is not scored",
      "max_score": 4,
      "score": 0,
      "ecog_grade": 0,
      "ecog_label": "fully_active"
    }
  ]
}

Response

Field Type Description
formula string ecog
formula_expression string Published ECOG grade rule
score integer Same as ecog_grade (0-4)
max_score integer 4
ecog_grade integer Caller-assigned Oken 1982 ECOG grade 0-4
ecog_label string Stable token for that grade: fully_active, restricted, ambulatory, limited_selfcare, or disabled
components array ecog component
citation object Oken 1982
disclaimer string Not a medical device

Example JSON

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

{
  "components": [
    {
      "factor": "ecog",
      "points": 0,
      "present": true
    }
  ],
  "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": "Oken MM, Creech RH, Tormey DC, Horton J, Davis TE, McFadden ET, Carbone PP",
    "doi": "10.1097/00000421-198212000-00014",
    "id": "oken-1982",
    "pmid": "7165009",
    "source": "Am J Clin Oncol. 1982;5(6):649-655",
    "title": "Toxicity and response criteria of the Eastern Cooperative Oncology Group"
  },
  "formula": "ecog",
  "formula_expression": "ECOG performance status = caller-assigned integer 0-4 (Oken 1982); max 4; grade 5 (dead) is not scored",
  "max_score": 4,
  "score": 0,
  "ecog_grade": 0,
  "ecog_label": "fully_active"
}

Client errors (HTTP 400)

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

HTTP Code When
400 invalid_ecog_ps ecog must be an integer from 0 to 4 (Oken 1982). Grade 5 (dead) is not scored. 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

  • IPI — Sum the Shipp 1993 five-factor International Prognostic Index (all ages) and return low (0–1), low_intermediate (2), high_intermediate (3), or high (4–5).

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.
  • 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.