# ED-initiated buprenorphine

ED-initiated buprenorphine

Status: LIVE
Price: $0.005 USDC
`GET /api/calc/ed_buprenorphine`
HTML: https://magentlab.com/docs/ed-buprenorphine
Markdown: https://magentlab.com/docs/ed-buprenorphine.md

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

## What it computes

Return the D'Onofrio 2015 emergency-department-initiated buprenorphine milligram for protocol day 1, 2, or 3: 8 mg on day 1 and 16 mg on days 2 and 3.

## When to use

When an agent needs the published D'Onofrio 2015 take-home milligram schedule for ED-initiated buprenorphine on protocol day 1, 2, or 3 and must not invent a home-induction tree, score COWS, or name a product brand.

## When not to use

- Not a medical device. Deterministic published-schedule output only.
- Not a prescription. magent does not name a product, route, or formulation.
- Not an X-waiver or induction algorithm beyond the trial's day-1 8 mg and day-2/3 16 mg take-home schedule.
- magent does not score COWS.

## Formula

```
dose_mg = (day == 1) ? 8 : 16
```

## Citation

[Emergency Department-Initiated Buprenorphine/Naloxone Treatment for Opioid Dependence: A Randomized Clinical Trial](https://doi.org/10.1001/jama.2015.3474)
D'Onofrio G, O'Connor PG, Pantalon MV, Chawarski MC, Busch SH, Owens PH, Bernstein SL, Fiellin DA
JAMA. 2015;313(16):1636-1644
DOI: [10.1001/jama.2015.3474](https://doi.org/10.1001/jama.2015.3474)

## Worked example

### Protocol day 1

Given: `day=1`

1. day = 1
2. dose_mg = 8


### Protocol day 2

Given: `day=2`

1. day = 2
2. dose_mg = 16


### Protocol day 3

Given: `day=3`

1. day = 3
2. dose_mg = 16


## Also searched as

- ED buprenorphine
- emergency department buprenorphine
- D'Onofrio buprenorphine
- ED-initiated buprenorphine
- buprenorphine day 1 8 mg
- buprenorphine take-home 16 mg
- opioid dependence ED induction

## Parameters

- `day` (integer, required): D'Onofrio 2015 protocol day 1, 2, or 3. Day 1 is 8 mg. Days 2 and 3 are 16 mg. Not a home-induction tree. magent does not score COWS.

## 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/ed_buprenorphine`
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": [
    {
      "day": "1"
    },
    {
      "day": "1"
    }
  ]
}
```

Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/ed-buprenorphine

Example 200:

```json
{
  "count": 2,
  "path": "/api/calc/ed_buprenorphine",
  "items": [
    {
      "day": 1,
      "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": "D'Onofrio G, O'Connor PG, Pantalon MV, Chawarski MC, Busch SH, Owens PH, Bernstein SL, Fiellin DA",
        "doi": "10.1001/jama.2015.3474",
        "id": "donofrio-2015",
        "pmid": "25919527",
        "source": "JAMA. 2015;313(16):1636-1644",
        "title": "Emergency Department-Initiated Buprenorphine/Naloxone Treatment for Opioid Dependence: A Randomized Clinical Trial"
      },
      "formula": "donofrio_2015",
      "formula_expression": "dose_mg = (day == 1) ? 8 : 16",
      "dose_mg": 8
    },
    {
      "day": 1,
      "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": "D'Onofrio G, O'Connor PG, Pantalon MV, Chawarski MC, Busch SH, Owens PH, Bernstein SL, Fiellin DA",
        "doi": "10.1001/jama.2015.3474",
        "id": "donofrio-2015",
        "pmid": "25919527",
        "source": "JAMA. 2015;313(16):1636-1644",
        "title": "Emergency Department-Initiated Buprenorphine/Naloxone Treatment for Opioid Dependence: A Randomized Clinical Trial"
      },
      "formula": "donofrio_2015",
      "formula_expression": "dose_mg = (day == 1) ? 8 : 16",
      "dose_mg": 8
    }
  ]
}
```

## Response fields

- `formula` (string): donofrio_2015
- `formula_expression` (string): dose_mg = (day == 1) ? 8 : 16
- `day` (integer): Protocol day 1, 2, or 3
- `dose_mg` (integer): Buprenorphine milligrams: 8 on day 1; 16 on days 2 and 3
- `citation` (object): D'Onofrio 2015 JAMA citation
- `disclaimer` (string): Not-a-device notice

## Example JSON

Frozen fixture. Not a live lookup.

```json
{
  "day": 1,
  "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": "D'Onofrio G, O'Connor PG, Pantalon MV, Chawarski MC, Busch SH, Owens PH, Bernstein SL, Fiellin DA",
    "doi": "10.1001/jama.2015.3474",
    "id": "donofrio-2015",
    "pmid": "25919527",
    "source": "JAMA. 2015;313(16):1636-1644",
    "title": "Emergency Department-Initiated Buprenorphine/Naloxone Treatment for Opioid Dependence: A Randomized Clinical Trial"
  },
  "formula": "donofrio_2015",
  "formula_expression": "dose_mg = (day == 1) ? 8 : 16",
  "dose_mg": 8
}
```

## Errors

- HTTP 400 `invalid_ed_buprenorphine`: ED buprenorphine day must be 1, 2, or 3 as published in D'Onofrio 2015. 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

- [COWS](https://magentlab.com/docs/cows) — Sum the eleven Wesson 2003 Clinical Opiate Withdrawal Scale (COWS) items from caller-assigned appendix integers and return the published total (max 48) with the published severity cutoffs.
- [Naloxone infusion](https://magentlab.com/docs/naloxone-drip) — Compute a continuous intravenous naloxone infusion rate as two-thirds of the caller-assigned reversal bolus each hour, using the Goldfrank 1986 text rule.
- [Morphine milligram equivalents](https://magentlab.com/docs/mme) — Compute morphine milligram equivalents from a CDC 2022 table opioid and daily dose (or transdermal fentanyl mcg/hr).

## 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.
