LIVE

CURB-65

Compute the CURB-65 community-acquired pneumonia severity score from age and discrete flags.

LIVE $0.005 USDC GET /api/calc/curb65

Markdown: /docs/curb65.md · Canonical: https://magentlab.com/docs/curb65

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

What it computes

Compute the CURB-65 community-acquired pneumonia severity score from age and discrete flags.

When to use

When an agent needs the published CURB-65 total and must not invent points from a chart narrative.

When not to use

• Not a treatment recommendation and not a site-of-care decision.
• urea_high is a boolean flag. magent does not convert BUN mg/dL to urea mmol/L.

Formula

CURB-65 = confusion + urea_high + respiratory_rate_ge_30 + low_blood_pressure + age_ge_65; max 5

Citation

Title

Defining community acquired pneumonia severity on presentation to hospital: an international derivation and validation study

Authors

Lim WS, van der Eerden MM, Laing R, et al.

Source

Thorax. 2003;58(5):377-382

DOI

10.1136/thorax.58.5.377

Worked example

Try

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

/api/calc/curb65?age=70&confusion=true&urea_high=true&respiratory_rate_ge_30=false&low_blood_pressure=false

Full URL: https://api.magentlab.com/api/calc/curb65?age=70&confusion=true&urea_high=true&respiratory_rate_ge_30=false&low_blood_pressure=false

x402 V2 curl

Expect HTTP 402 and a PAYMENT-REQUIRED header 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/curb65?age=70&confusion=true&urea_high=true&respiratory_rate_ge_30=false&low_blood_pressure=false"

Cursor mcp.json

Intended config for @magent/mcp. This is not npm @x402/fetch (a payment fetch wrapper).

{
  "mcpServers": {
    "magent": {
      "args": [
        "-y",
        "@magent/mcp"
      ],
      "command": "npx",
      "env": {
        "X402_PRIVATE_KEY": "0xYOUR_SPENDING_KEY"
      }
    }
  }
}

Parameters

Response

Example JSON

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

{
  "components": [
    {
      "factor": "confusion",
      "points": 1,
      "present": true
    },
    {
      "factor": "urea_high",
      "points": 1,
      "present": true
    },
    {
      "factor": "respiratory_rate_ge_30",
      "points": 0,
      "present": false
    },
    {
      "factor": "low_blood_pressure",
      "points": 0,
      "present": false
    },
    {
      "value": 70,
      "factor": "age_ge_65",
      "points": 1,
      "present": true
    }
  ],
  "disclaimer": "Not a medical device. Deterministic published-formula or coded-ontology output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
  "citation": {
    "authors": "Lim WS, van der Eerden MM, Laing R, et al.",
    "doi": "10.1136/thorax.58.5.377",
    "id": "lim-2003",
    "source": "Thorax. 2003;58(5):377-382",
    "title": "Defining community acquired pneumonia severity on presentation to hospital: an international derivation and validation study"
  },
  "formula": "curb65",
  "formula_expression": "CURB-65 = confusion + urea_high + respiratory_rate_ge_30 + low_blood_pressure + age_ge_65; max 5",
  "age_years": 70,
  "max_score": 5,
  "score": 3
}

Errors

Related tools

• Wells PE — Compute the Wells pulmonary-embolism probability score and return three-tier and two-tier bands.
• Wells DVT — Compute the Wells deep-vein thrombosis probability score and return three-tier and two-tier bands.

Also searched as

• CURB 65
• CURB65 score
• Lim pneumonia score
• CAP severity

Payment

Required query parameters must be present and valid. 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. Retry the same URL with PAYMENT-SIGNATURE. Settlement completes before the tool runs. Full handshake and shared payment errors: Payments.

Guarantees

• Invalid query parameters return HTTP 400 before settlement. You are not charged.
• Settlement finishes before the tool executes. Uncertain settlement fails closed (HTTP 503).
• Execution is timeout-bounded and concurrency-capped.
• Calculator inputs are not persisted. Request logs store path without query.