# Edinburgh Postnatal Depression Scale EPDS Status: LIVE Price: $0.005 USDC `GET /api/calc/epds` HTML: https://magentlab.com/docs/epds Markdown: https://magentlab.com/docs/epds.md Not a medical device. Not a diagnosis, dose, or listing recommendation. ## What it computes Sum ten caller-assigned Cox 1987 EPDS integers (0-3 over the past 7 days; laugh, enjoyment, and anxious reverse-scored in that paper so 0 is the least symptomatic published pole) and return the 0-30 total and whether it meets this paper's 12/13 threshold (score ≥13). ## When to use When an agent has already assigned Cox 1987 EPDS 0-3 integers for all ten items (after that paper's reverse key for items 1, 2, and 4) and needs the published total and 12/13 threshold, not a depression interview, PHQ-9, QIDS, or MDI. ## When not to use - Not a medical device and not a depression diagnosis or treatment order. - magent does not administer a depression interview. Each of the ten items is a caller-assigned integer 0-3 (0 least symptomatic published pole through 3 most, past 7 days). magent does not interpret the items. - This is Cox 1987 EPDS only. Items laugh, enjoyment, and anxious (items 1, 2, and 4) are reverse-scored in that paper; the caller assigns the published 0-3 after that reverse key. Total 0-30. magent does not score PHQ-9, QIDS, or MDI. - Cox 1987 published a threshold of 12/13 (at_or_above_cutoff is true iff score ≥13). magent does not apply later ≥10 community cuts or a cut of score >13 only, and it does not treat a score as a depression diagnosis. ## Formula ``` EPDS = laugh + enjoyment + self_blame + anxious + scared + coping + sleep + sad + crying + self_harm; each caller-assigned 0-3 as in Cox 1987 (laugh, enjoyment, and anxious reverse-scored in that paper; 0 is the least symptomatic published pole); max 30; Cox 1987 threshold 12/13 (at or above iff score ≥ 13) ``` ## Citation [Detection of postnatal depression. Development of the 10-item Edinburgh Postnatal Depression Scale](https://doi.org/10.1192/bjp.150.6.782) Cox JL, Holden JM, Sagovsky R Br J Psychiatry. 1987;150:782-786 DOI: [10.1192/bjp.150.6.782](https://doi.org/10.1192/bjp.150.6.782) ## Worked example ### All items at the published 0 pole Given: `anxious=0, coping=0, crying=0, enjoyment=0, laugh=0, sad=0, scared=0, self_blame=0, self_harm=0, sleep=0` 1. Each item is 0 (least symptomatic published pole, including reverse-scored laugh, enjoyment, and anxious) 2. Score = 0 (max 30); at_or_above_cutoff false (Cox 1987 threshold is 12/13) ### Reverse-scored item at 3 Given: `anxious=0, coping=0, crying=0, enjoyment=0, laugh=3, sad=0, scared=0, self_blame=0, self_harm=0, sleep=0` 1. laugh is reverse-scored in Cox 1987; the caller-assigned published score 3 adds 3, not 0 2. Remaining items 0; score = 3; at_or_above_cutoff false ### Cox 1987 threshold 12/13 Given: `anxious=3, coping=0, crying=0, enjoyment=3, laugh=3, sad=0, scared=1, self_blame=3, self_harm=0, sleep=0` 1. 3 + 3 + 3 + 3 + 1 + 0 + 0 + 0 + 0 + 0 = 13 2. Score = 13 (max 30); at_or_above_cutoff true (12 is below; ≥13 is at or above). No ≥10 community cut. ## Also searched as - EPDS - Edinburgh Postnatal Depression Scale - Edinburgh depression scale - Cox EPDS - postnatal depression screen - postpartum depression scale - 10-item EPDS - Cox 1987 EPDS ## Parameters - `laugh` (integer, required): Caller-assigned Cox 1987 EPDS item 1 (integer 0-3). Reverse-scored in that paper: ability to laugh and see the funny side of things over the past 7 days. 0 is the least symptomatic published pole after reverse scoring; 3 is the most. magent does not interpret the item. - `enjoyment` (integer, required): Caller-assigned Cox 1987 EPDS item 2 (integer 0-3). Reverse-scored in that paper: looking forward with enjoyment to things over the past 7 days. 0 is the least symptomatic published pole after reverse scoring; 3 is the most. magent does not interpret the item. - `self_blame` (integer, required): Caller-assigned Cox 1987 EPDS item 3 (integer 0-3): blamed self unnecessarily when things went wrong over the past 7 days. Adds as published (0 least symptomatic pole, 3 most). magent does not interpret the item. - `anxious` (integer, required): Caller-assigned Cox 1987 EPDS item 4 (integer 0-3). Reverse-scored in that paper: anxious or worried for no good reason over the past 7 days. 0 is the least symptomatic published pole after reverse scoring; 3 is the most. magent does not interpret the item. - `scared` (integer, required): Caller-assigned Cox 1987 EPDS item 5 (integer 0-3): scared or panicky for no very good reason over the past 7 days. Adds as published (0 least symptomatic pole, 3 most). magent does not interpret the item. - `coping` (integer, required): Caller-assigned Cox 1987 EPDS item 6 (integer 0-3): things getting on top of the respondent over the past 7 days. Adds as published (0 least symptomatic pole, 3 most). magent does not interpret the item. - `sleep` (integer, required): Caller-assigned Cox 1987 EPDS item 7 (integer 0-3): unhappiness with difficulty sleeping over the past 7 days. Adds as published (0 least symptomatic pole, 3 most). magent does not interpret the item. - `sad` (integer, required): Caller-assigned Cox 1987 EPDS item 8 (integer 0-3): felt sad or miserable over the past 7 days. Adds as published (0 least symptomatic pole, 3 most). magent does not interpret the item. - `crying` (integer, required): Caller-assigned Cox 1987 EPDS item 9 (integer 0-3): crying from unhappiness over the past 7 days. Adds as published (0 least symptomatic pole, 3 most). magent does not interpret the item. - `self_harm` (integer, required): Caller-assigned Cox 1987 EPDS item 10 (integer 0-3): thoughts of harming oneself over the past 7 days. Adds as published (0 least symptomatic pole, 3 most). 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/epds` 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": [ { "anxious": "0", "coping": "0", "crying": "0", "enjoyment": "0", "laugh": "0", "sad": "0", "scared": "0", "self_blame": "0", "self_harm": "0", "sleep": "0" }, { "anxious": "0", "coping": "0", "crying": "0", "enjoyment": "0", "laugh": "0", "sad": "0", "scared": "0", "self_blame": "0", "self_harm": "0", "sleep": "0" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/epds Example 200: ```json { "count": 2, "path": "/api/calc/epds", "items": [ { "components": [ { "value": 0, "factor": "laugh", "points": 0, "present": true, "reverse_scored": true }, { "value": 0, "factor": "enjoyment", "points": 0, "present": true, "reverse_scored": true }, { "value": 0, "factor": "self_blame", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "anxious", "points": 0, "present": true, "reverse_scored": true }, { "value": 0, "factor": "scared", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "coping", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "sleep", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "sad", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "crying", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "self_harm", "points": 0, "present": true, "reverse_scored": 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": "Cox JL, Holden JM, Sagovsky R", "doi": "10.1192/bjp.150.6.782", "id": "cox-1987", "pmid": "3651732", "source": "Br J Psychiatry. 1987;150:782-786", "title": "Detection of postnatal depression. Development of the 10-item Edinburgh Postnatal Depression Scale" }, "formula": "epds", "formula_expression": "EPDS = laugh + enjoyment + self_blame + anxious + scared + coping + sleep + sad + crying + self_harm; each caller-assigned 0-3 as in Cox 1987 (laugh, enjoyment, and anxious reverse-scored in that paper; 0 is the least symptomatic published pole); max 30; Cox 1987 threshold 12/13 (at or above iff score ≥ 13)", "max_score": 30, "score": 0, "at_or_above_cutoff": false }, { "components": [ { "value": 0, "factor": "laugh", "points": 0, "present": true, "reverse_scored": true }, { "value": 0, "factor": "enjoyment", "points": 0, "present": true, "reverse_scored": true }, { "value": 0, "factor": "self_blame", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "anxious", "points": 0, "present": true, "reverse_scored": true }, { "value": 0, "factor": "scared", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "coping", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "sleep", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "sad", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "crying", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "self_harm", "points": 0, "present": true, "reverse_scored": 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": "Cox JL, Holden JM, Sagovsky R", "doi": "10.1192/bjp.150.6.782", "id": "cox-1987", "pmid": "3651732", "source": "Br J Psychiatry. 1987;150:782-786", "title": "Detection of postnatal depression. Development of the 10-item Edinburgh Postnatal Depression Scale" }, "formula": "epds", "formula_expression": "EPDS = laugh + enjoyment + self_blame + anxious + scared + coping + sleep + sad + crying + self_harm; each caller-assigned 0-3 as in Cox 1987 (laugh, enjoyment, and anxious reverse-scored in that paper; 0 is the least symptomatic published pole); max 30; Cox 1987 threshold 12/13 (at or above iff score ≥ 13)", "max_score": 30, "score": 0, "at_or_above_cutoff": false } ] } ``` ## Response fields - `formula` (string): epds - `formula_expression` (string): Exact expression used - `score` (integer): EPDS points 0-30 - `max_score` (integer): 30 - `at_or_above_cutoff` (boolean): true iff score ≥ 13 (Cox 1987 threshold 12/13). Not a diagnosis. Not later ≥10 community cuts. Not a cut of score >13 only. - `components` (array): Per-item caller-assigned points (reverse-scored items flagged) - `citation` (object): Cox et al. Br J Psychiatry 1987 citation - `disclaimer` (string): Not-a-device notice ## Example JSON Frozen fixture. Not a live lookup. ```json { "components": [ { "value": 0, "factor": "laugh", "points": 0, "present": true, "reverse_scored": true }, { "value": 0, "factor": "enjoyment", "points": 0, "present": true, "reverse_scored": true }, { "value": 0, "factor": "self_blame", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "anxious", "points": 0, "present": true, "reverse_scored": true }, { "value": 0, "factor": "scared", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "coping", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "sleep", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "sad", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "crying", "points": 0, "present": true, "reverse_scored": false }, { "value": 0, "factor": "self_harm", "points": 0, "present": true, "reverse_scored": 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": "Cox JL, Holden JM, Sagovsky R", "doi": "10.1192/bjp.150.6.782", "id": "cox-1987", "pmid": "3651732", "source": "Br J Psychiatry. 1987;150:782-786", "title": "Detection of postnatal depression. Development of the 10-item Edinburgh Postnatal Depression Scale" }, "formula": "epds", "formula_expression": "EPDS = laugh + enjoyment + self_blame + anxious + scared + coping + sleep + sad + crying + self_harm; each caller-assigned 0-3 as in Cox 1987 (laugh, enjoyment, and anxious reverse-scored in that paper; 0 is the least symptomatic published pole); max 30; Cox 1987 threshold 12/13 (at or above iff score ≥ 13)", "max_score": 30, "score": 0, "at_or_above_cutoff": false } ``` ## Errors - HTTP 400 `invalid_epds`: Each Edinburgh Postnatal Depression Scale item must be an integer in the Cox 1987 published 0-3 range. 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. - [QIDS](https://magentlab.com/docs/qids) — Map 16 caller-assigned Rush 2003 QIDS-SR integers (0-3) to nine DSM-IV domains (sleep, appetite/weight, and psychomotor are each the published max of their items) and return the 0-27 total and IRT severity band. - [MDI](https://magentlab.com/docs/mdi) — Map 12 caller-assigned Bech 2001 MDI integers (0-5 over the last 2 weeks) to ten DSM-IV/ICD-10 symptom items (appetite and psychomotor are each the published max of their pair) and return the 0-50 total and whether it meets this paper's optimal cutoff of 26. ## 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.