# FLIPI (Solal-Céligny)

FLIPI

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

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

## What it computes

Sum the Solal-Céligny 2004 FLIPI adverse factors for follicular lymphoma and return low (0–1), intermediate (2), or high (≥3).

## When to use

When an agent needs the published FLIPI 2004 point total and class and must not invent a follicular-lymphoma diagnosis or treatment choice, and must not substitute FLIPI-2.

## When not to use

- Not a medical device and not a follicular-lymphoma diagnosis or treatment choice. magent does not examine the patient.
- This is FLIPI 2004 (Solal-Céligny), not FLIPI-2.
- magent does not stage lymphoma, assay hemoglobin, count nodal sites, or measure LDH. All five inputs are caller-assigned flags.

## Formula

```
FLIPI = age_gt_60 1 + stage_iii_iv 1 + hemoglobin_lt_120_g_l 1 + nodal_sites_gt_4 1 + ldh_above_uln 1; Solal-Céligny 2004; max 5; low 0-1, intermediate 2, high ≥3
```

## Citation

[Follicular lymphoma international prognostic index](https://doi.org/10.1182/blood-2003-12-4434)
Solal-Céligny P, Roy P, Colombat P, White J, Armitage JO, Arranz-Saez R, Au WY, Bellei M, Brice P, Caballero D, Coiffier B, Conde-Garcia E, Doyen C, Federico M, Fisher RI, Garcia-Conde JF, Gisselbrecht C, Haioun C, LeBlanc M, Lister AT, Lopez-Guillermo A, McLaughlin P, Milpied N, Morel P, Mounier N, Proctor SJ, Rohatiner A, Smith P, Soubeyran P, Tilly H, Vitolo U, Zinzani PL, Zucca E, Montserrat E
Blood. 2004;104(5):1258-1265
DOI: [10.1182/blood-2003-12-4434](https://doi.org/10.1182/blood-2003-12-4434)

## Worked example

### All flags false

Given: `age_gt_60=false, hemoglobin_lt_120_g_l=false, ldh_above_uln=false, nodal_sites_gt_4=false, stage_iii_iv=false`

1. All five caller-assigned flags false → 0
2. Score = 0 (max 5); flipi_band = low


### Age >60, Ann Arbor III–IV, and hemoglobin <120 g/L

Given: `age_gt_60=true, hemoglobin_lt_120_g_l=true, ldh_above_uln=false, nodal_sites_gt_4=false, stage_iii_iv=true`

1. age_gt_60 → 1; stage_iii_iv → 1; hemoglobin_lt_120_g_l → 1; remaining flags 0
2. Score = 3 (max 5); flipi_band = high (≥3)


## Also searched as

- FLIPI
- Follicular lymphoma international prognostic index
- Solal-Céligny FLIPI
- FLIPI 2004
- follicular lymphoma prognostic index
- Ann Arbor FLIPI
- FLIPI score

## Parameters

- `age_gt_60` (boolean, required): Age >60 years as assigned by the caller (Solal-Céligny 2004). true scores 1. magent does not assign age.
- `stage_iii_iv` (boolean, required): Ann Arbor stage III–IV as assigned by the caller (Solal-Céligny 2004). true scores 1. magent does not stage lymphoma.
- `hemoglobin_lt_120_g_l` (boolean, required): Hemoglobin <120 g/L as assigned by the caller (Solal-Céligny 2004). true scores 1. magent does not assay hemoglobin.
- `nodal_sites_gt_4` (boolean, required): Nodal areas >4 as assigned by the caller (Solal-Céligny 2004). true scores 1. magent does not count nodal sites.
- `ldh_above_uln` (boolean, required): Serum LDH above the upper limit of normal as assigned by the caller (Solal-Céligny 2004). true scores 1. magent does not measure LDH.

## 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/flipi`
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": [
    {
      "age_gt_60": "false",
      "hemoglobin_lt_120_g_l": "false",
      "ldh_above_uln": "false",
      "nodal_sites_gt_4": "false",
      "stage_iii_iv": "false"
    },
    {
      "age_gt_60": "false",
      "hemoglobin_lt_120_g_l": "false",
      "ldh_above_uln": "false",
      "nodal_sites_gt_4": "false",
      "stage_iii_iv": "false"
    }
  ]
}
```

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

Example 200:

```json
{
  "count": 2,
  "path": "/api/calc/flipi",
  "items": [
    {
      "components": [
        {
          "factor": "age_gt_60",
          "points": 0,
          "present": false
        },
        {
          "factor": "stage_iii_iv",
          "points": 0,
          "present": false
        },
        {
          "factor": "hemoglobin_lt_120_g_l",
          "points": 0,
          "present": false
        },
        {
          "factor": "nodal_sites_gt_4",
          "points": 0,
          "present": false
        },
        {
          "factor": "ldh_above_uln",
          "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": "Solal-Céligny P, Roy P, Colombat P, White J, Armitage JO, Arranz-Saez R, Au WY, Bellei M, Brice P, Caballero D, Coiffier B, Conde-Garcia E, Doyen C, Federico M, Fisher RI, Garcia-Conde JF, Gisselbrecht C, Haioun C, LeBlanc M, Lister AT, Lopez-Guillermo A, McLaughlin P, Milpied N, Morel P, Mounier N, Proctor SJ, Rohatiner A, Smith P, Soubeyran P, Tilly H, Vitolo U, Zinzani PL, Zucca E, Montserrat E",
        "doi": "10.1182/blood-2003-12-4434",
        "id": "solal-celigny-2004",
        "pmid": "15126323",
        "source": "Blood. 2004;104(5):1258-1265",
        "title": "Follicular lymphoma international prognostic index"
      },
      "formula": "flipi",
      "formula_expression": "FLIPI = age_gt_60 1 + stage_iii_iv 1 + hemoglobin_lt_120_g_l 1 + nodal_sites_gt_4 1 + ldh_above_uln 1; Solal-Céligny 2004; max 5; low 0-1, intermediate 2, high ≥3",
      "max_score": 5,
      "score": 0,
      "flipi_band": "low"
    },
    {
      "components": [
        {
          "factor": "age_gt_60",
          "points": 0,
          "present": false
        },
        {
          "factor": "stage_iii_iv",
          "points": 0,
          "present": false
        },
        {
          "factor": "hemoglobin_lt_120_g_l",
          "points": 0,
          "present": false
        },
        {
          "factor": "nodal_sites_gt_4",
          "points": 0,
          "present": false
        },
        {
          "factor": "ldh_above_uln",
          "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": "Solal-Céligny P, Roy P, Colombat P, White J, Armitage JO, Arranz-Saez R, Au WY, Bellei M, Brice P, Caballero D, Coiffier B, Conde-Garcia E, Doyen C, Federico M, Fisher RI, Garcia-Conde JF, Gisselbrecht C, Haioun C, LeBlanc M, Lister AT, Lopez-Guillermo A, McLaughlin P, Milpied N, Morel P, Mounier N, Proctor SJ, Rohatiner A, Smith P, Soubeyran P, Tilly H, Vitolo U, Zinzani PL, Zucca E, Montserrat E",
        "doi": "10.1182/blood-2003-12-4434",
        "id": "solal-celigny-2004",
        "pmid": "15126323",
        "source": "Blood. 2004;104(5):1258-1265",
        "title": "Follicular lymphoma international prognostic index"
      },
      "formula": "flipi",
      "formula_expression": "FLIPI = age_gt_60 1 + stage_iii_iv 1 + hemoglobin_lt_120_g_l 1 + nodal_sites_gt_4 1 + ldh_above_uln 1; Solal-Céligny 2004; max 5; low 0-1, intermediate 2, high ≥3",
      "max_score": 5,
      "score": 0,
      "flipi_band": "low"
    }
  ]
}
```

## Response fields

- `formula` (string): flipi
- `formula_expression` (string): Exact expression used
- `score` (integer): FLIPI points 0-5
- `max_score` (integer): Always 5
- `flipi_band` (string): low when score is 0-1, intermediate when 2, high when ≥3 (Solal-Céligny 2004). Not a follicular-lymphoma diagnosis or treatment choice. FLIPI 2004, not FLIPI-2.
- `components` (array): Per-factor points
- `citation` (object): Solal-Céligny 2004 Blood citation
- `disclaimer` (string): Not-a-device notice

## Example JSON

Frozen fixture. Not a live lookup.

```json
{
  "components": [
    {
      "factor": "age_gt_60",
      "points": 0,
      "present": false
    },
    {
      "factor": "stage_iii_iv",
      "points": 0,
      "present": false
    },
    {
      "factor": "hemoglobin_lt_120_g_l",
      "points": 0,
      "present": false
    },
    {
      "factor": "nodal_sites_gt_4",
      "points": 0,
      "present": false
    },
    {
      "factor": "ldh_above_uln",
      "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": "Solal-Céligny P, Roy P, Colombat P, White J, Armitage JO, Arranz-Saez R, Au WY, Bellei M, Brice P, Caballero D, Coiffier B, Conde-Garcia E, Doyen C, Federico M, Fisher RI, Garcia-Conde JF, Gisselbrecht C, Haioun C, LeBlanc M, Lister AT, Lopez-Guillermo A, McLaughlin P, Milpied N, Morel P, Mounier N, Proctor SJ, Rohatiner A, Smith P, Soubeyran P, Tilly H, Vitolo U, Zinzani PL, Zucca E, Montserrat E",
    "doi": "10.1182/blood-2003-12-4434",
    "id": "solal-celigny-2004",
    "pmid": "15126323",
    "source": "Blood. 2004;104(5):1258-1265",
    "title": "Follicular lymphoma international prognostic index"
  },
  "formula": "flipi",
  "formula_expression": "FLIPI = age_gt_60 1 + stage_iii_iv 1 + hemoglobin_lt_120_g_l 1 + nodal_sites_gt_4 1 + ldh_above_uln 1; Solal-Céligny 2004; max 5; low 0-1, intermediate 2, high ≥3",
  "max_score": 5,
  "score": 0,
  "flipi_band": "low"
}
```

## Errors

- HTTP 400 `invalid_flag`: boolean clinical flags must be true or false 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

- [ANC](https://magentlab.com/docs/anc) — Compute absolute neutrophil count from WBC and neutrophil plus band percents, plus a Bodey 1966 granulocyte band.
- [NLR](https://magentlab.com/docs/nlr) — Compute the Zahorec 2001 neutrophil-to-lymphocyte ratio from relative neutrophil and lymphocyte percents.
- [ISTH overt DIC](https://magentlab.com/docs/isth-dic) — Sum the four Taylor 2001 ISTH SSC overt DIC laboratory items (platelets, fibrin-related marker, PT prolongation, fibrinogen) and return the published <5 / >=5 band.

## 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.
