Rockall Pre-Endoscopy Score Calculator (magent)

x402

Rockall Pre-Endoscopy Score Calculator (magent) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Calculates the Rockall 1996 pre-endoscopy admission score for acute upper GI haemorrhage from age, blood pressure, heart rate, and comorbidity.

Price / call$0.005

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Success—

StatusUnknown

How this service works

Rockall 1996 pre-endoscopy (admission) score after acute upper GI haemorrhage: age <60 0, 60-79 1, >=80 2; shock SBP<100 2 (hypotension; tachycardia not added), else HR>=100 1, else 0; comorbidity none 0, cardiac (failure, IHD, or any major) 2, renal/liver/metastatic 3. Max 7. Not complete Rockall, AIMS65, or GBS. Caller assigns comorbidity.

Output

Returns the integer Rockall pre-endoscopy score (0–7) broken down by component contributions: age band (0–2), shock/haemodynamic status (0–2), and comorbidity tier (0–3). Does not include post-endoscopy Rockall components (stigmata, diagnosis). Not equivalent to full Rockall, AIMS65, or Glasgow-Blatchford.

Example use cases

ED triage for acute GI bleed

“My patient in the ED is 65 years old, systolic BP is 105 mmHg, heart rate is 102 bpm, and they have no significant comorbidities — what's their Rockall pre-endoscopy admission score?”

High-risk elderly patient with liver failure

“Compute the Rockall admission score for an 81-year-old with a systolic of 92 mmHg, heart rate of 95 bpm, and known liver failure — comorbidity is renal_liver_metastatic.”

Low-risk young patient assessment

“What's the pre-endoscopy Rockall score for a 45-year-old presenting with upper GI bleed, systolic BP 120 mmHg, heart rate 88 bpm, and no comorbidities?”

Technical details

Endpoint

GEThttps://api.magentlab.com/api/calc/rockall_pre

When to prefer

Use this endpoint when you need a fast, explainable pre-endoscopy triage score for acute upper GI haemorrhage and the caller can assign comorbidity category from the clinical record. Prefer over full Rockall when endoscopy findings are not yet available. Not a substitute for AIMS65 or Glasgow-Blatchford if those are needed; choose based on which score is required by the clinical workflow.

Side effects

Age outside 18–120 range returns validation error
Heart rate outside 30–220 range returns validation error
Systolic BP outside 50–250 returns validation error
Invalid comorbidity string (not 'none', 'cardiac', or 'renal_liver_metastatic') returns error
Missing required query parameters return 400-level error
Payment failure (x402) blocks the call if USDC not provided

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "path": "/api/calc/rockall_pre",
    "count": 2,
    "items": [
      {
        "score": 0,
        "formula": "rockall_pre",
        "citation": {
          "id": "rockall-1996",
          "doi": "10.1136/gut.38.3.316",
          "title": "Risk assessment after acute upper gastrointestinal haemorrhage",
          "source": "Gut. 1996;38(3):316-321",
          "authors": "Rockall TA, Logan RF, Devlin HB, Northfield TC"
        },
        "age_years": 50,
        "max_score": 7,
        "components": [
          {
            "value": 50,
            "factor": "age",
            "points": 0,
            "present": false
          },
          {
            "value": {
              "heart_rate_bpm": 80,
              "systolic_mm_hg": 120
            },
            "factor": "shock",
            "points": 0,
            "present": false
          },
          {
            "value": "none",
            "factor": "comorbidity",
            "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.",
        "comorbidity": "none",
        "heart_rate_bpm": 80,
        "systolic_mm_hg": 120,
        "formula_expression": "pre-endoscopy Rockall = age (<60: 0, 60-79: 1, >=80: 2) + shock (SBP<100: 2; else HR>=100: 1; else 0) + comorbidity (none: 0, cardiac: 2, renal_liver_metastatic: 3); max 7"
      },
      {
        "score": 0,
        "formula": "rockall_pre",
        "citation": {
          "id": "rockall-1996",
          "doi": "10.1136/gut.38.3.316",
          "title": "Risk assessment after acute upper gastrointestinal haemorrhage",
          "source": "Gut. 1996;38(3):316-321",
          "authors": "Rockall TA, Logan RF, Devlin HB, Northfield TC"
        },
        "age_years": 50,
        "max_score": 7,
        "components": [
          {
            "value": 50,
            "factor": "age",
            "points": 0,
            "present": false
          },
          {
            "value": {
              "heart_rate_bpm": 80,
              "systolic_mm_hg": 120
            },
            "factor": "shock",
            "points": 0,
            "present": false
          },
          {
            "value": "none",
            "factor": "comorbidity",
            "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.",
        "comorbidity": "none",
        "heart_rate_bpm": 80,
        "systolic_mm_hg": 120,
        "formula_expression": "pre-endoscopy Rockall = age (<60: 0, 60-79: 1, >=80: 2) + shock (SBP<100: 2; else HR>=100: 1; else 0) + comorbidity (none: 0, cardiac: 2, renal_liver_metastatic: 3); max 7"
      }
    ]
  }
}

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How this service works

Output

Example use cases

ED triage for acute GI bleed

“My patient in the ED is 65 years old, systolic BP is 105 mmHg, heart rate is 102 bpm, and they have no significant comorbidities — what's their Rockall pre-endoscopy admission score?”

High-risk elderly patient with liver failure

“Compute the Rockall admission score for an 81-year-old with a systolic of 92 mmHg, heart rate of 95 bpm, and known liver failure — comorbidity is renal_liver_metastatic.”

Low-risk young patient assessment

“What's the pre-endoscopy Rockall score for a 45-year-old presenting with upper GI bleed, systolic BP 120 mmHg, heart rate 88 bpm, and no comorbidities?”

Technical details

Endpoint

GEThttps://api.magentlab.com/api/calc/rockall_pre

When to prefer

Side effects

Age outside 18–120 range returns validation error
Heart rate outside 30–220 range returns validation error
Systolic BP outside 50–250 returns validation error
Invalid comorbidity string (not 'none', 'cardiac', or 'renal_liver_metastatic') returns error
Missing required query parameters return 400-level error
Payment failure (x402) blocks the call if USDC not provided

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "path": "/api/calc/rockall_pre",
    "count": 2,
    "items": [
      {
        "score": 0,
        "formula": "rockall_pre",
        "citation": {
          "id": "rockall-1996",
          "doi": "10.1136/gut.38.3.316",
          "title": "Risk assessment after acute upper gastrointestinal haemorrhage",
          "source": "Gut. 1996;38(3):316-321",
          "authors": "Rockall TA, Logan RF, Devlin HB, Northfield TC"
        },
        "age_years": 50,
        "max_score": 7,
        "components": [
          {
            "value": 50,
            "factor": "age",
            "points": 0,
            "present": false
          },
          {
            "value": {
              "heart_rate_bpm": 80,
              "systolic_mm_hg": 120
            },
            "factor": "shock",
            "points": 0,
            "present": false
          },
          {
            "value": "none",
            "factor": "comorbidity",
            "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.",
        "comorbidity": "none",
        "heart_rate_bpm": 80,
        "systolic_mm_hg": 120,
        "formula_expression": "pre-endoscopy Rockall = age (<60: 0, 60-79: 1, >=80: 2) + shock (SBP<100: 2; else HR>=100: 1; else 0) + comorbidity (none: 0, cardiac: 2, renal_liver_metastatic: 3); max 7"
      },
      {
        "score": 0,
        "formula": "rockall_pre",
        "citation": {
          "id": "rockall-1996",
          "doi": "10.1136/gut.38.3.316",
          "title": "Risk assessment after acute upper gastrointestinal haemorrhage",
          "source": "Gut. 1996;38(3):316-321",
          "authors": "Rockall TA, Logan RF, Devlin HB, Northfield TC"
        },
        "age_years": 50,
        "max_score": 7,
        "components": [
          {
            "value": 50,
            "factor": "age",
            "points": 0,
            "present": false
          },
          {
            "value": {
              "heart_rate_bpm": 80,
              "systolic_mm_hg": 120
            },
            "factor": "shock",
            "points": 0,
            "present": false
          },
          {
            "value": "none",
            "factor": "comorbidity",
            "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.",
        "comorbidity": "none",
        "heart_rate_bpm": 80,
        "systolic_mm_hg": 120,
        "formula_expression": "pre-endoscopy Rockall = age (<60: 0, 60-79: 1, >=80: 2) + shock (SBP<100: 2; else HR>=100: 1; else 0) + comorbidity (none: 0, cardiac: 2, renal_liver_metastatic: 3); max 7"
      }
    ]
  }
}