# ECOG performance status (Oken) ECOG Status: LIVE Price: $0.005 USDC `GET /api/calc/ecog` HTML: https://magentlab.com/docs/ecog Markdown: https://magentlab.com/docs/ecog.md 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 [Toxicity and response criteria of the Eastern Cooperative Oncology Group](https://doi.org/10.1097/00000421-198212000-00014) Oken MM, Creech RH, Tormey DC, Horton J, Davis TE, McFadden ET, Carbone PP Am J Clin Oncol. 1982;5(6):649-655 DOI: [10.1097/00000421-198212000-00014](https://doi.org/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 ## Parameters - `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. Method: `POST /api/calc/ecog` 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": [ { "ecog": "0" }, { "ecog": "0" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/ecog Example 200: ```json { "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 fields - `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 Frozen fixture. Not a live lookup. ```json { "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" } ``` ## Errors - HTTP 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. - 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 - [IPI](https://magentlab.com/docs/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. - 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. - 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.