# Bastion Classification of Lower-Limb IED Injury

> Bastion Classification of Lower-Limb IED Injury 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).

Returns the Bastion class description and associated injury flags (segmental, intraperitoneal abdomen, genital/perineal, pelvic ring, upper limb) plus tourniquet effectiveness for a caller-assigned blast injury class 1–5.

## Facts

- Endpoint: GET https://api.magentlab.com/api/calc/bastion
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bastion-classification-of-lower-limb-ied-injury-015e0cfa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dGTMmJHTyNWd4MoldTeJ4

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability bastion-classification-of-lower-limb-ied-injury-015e0cfa
```

Example prompt: The casualty has a Bastion class 3 lower-limb blast injury with associated segmental injury and pelvic ring involvement but no intraperitoneal abdomen, genital/perineal, or upper limb injuries — look up the Bastion class description and tell me whether a tourniquet will be effective.

## When to prefer this

Use this endpoint when you need a structured, coded lookup of the Jacobs 2014 Bastion classification system for lower-limb blast injuries, specifically to retrieve the class description and tourniquet effectiveness determination. Do not use for MESS scoring, ISS/AIS computation, mortality prediction, transfusion rate estimation, or any treatment protocol — this is classification lookup only and does not substitute for clinical examination.

## Known failure modes

- Missing required query parameter returns a validation error
- bastion_class outside integer range 1–5 returns an invalid input error
- Incorrect boolean format for injury flags causes a schema validation failure
- Network or payment (x402) failure returns no data

## How this service works

Bastion classification of lower-limb IED injury (Jacobs 2014). Caller assigns class 1-5 as the most proximal extent. Returns the class description, associated-injury flags (segmental, intraperitoneal abdomen, genital/perineal, pelvic ring, upper limb), and tourniquet_effective (true for class 1-3, false for class 4-5). Not MESS, not ISS AIS, not a treatment protocol. Paper was not designed for mortality or transfusion rates. magent does not examine the casualty.

## Output

Returns the Bastion class description (text summary of the injury level), a tourniquet_effective boolean (true for classes 1–3, false for classes 4–5), and the caller-supplied associated injury flags (segmental, intraperitoneal_abdomen, genital_perineal, pelvic_ring, upper_limb) echoed back for confirmation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "required": [
      "bastion_class",
      "segmental",
      "intraperitoneal_abdomen",
      "genital_perineal",
      "pelvic_ring",
      "upper_limb"
     ],
     "properties": {
      "segmental": {
       "type": "boolean",
       "description": "true when there is potentially viable tissue distal to the most proximal injury (Jacobs 2014: segmental injuries recognised as a distinct entity). Required. magent does not examine the casualty."
      },
      "upper_limb": {
       "type": "boolean",
       "description": "true when associated upper-limb injury is present as assigned by the caller (Jacobs 2014). Required. magent does not examine the casualty."
      },
      "pelvic_ring": {
       "type": "boolean",
       "description": "true when associated pelvic ring injury is present as assigned by the caller (Jacobs 2014). Required. magent does not examine the casualty."
      },
      "bastion_class": {
       "type": "integer",
       "description": "Bastion class 1-5 as assigned by the caller: most proximal extent of the lower-limb blast injury (1 injury confined to the foot; 2 lower leg, effective below-knee tourniquet; 3 proximal lower leg or thigh, effective above-knee tourniquet; 4 proximal thigh, tourniquet not effective; 5 any injury with buttock involvement). Jacobs 2014. magent does not examine the casualty."
      },
      "genital_perineal": {
       "type": "boolean",
       "description": "true when associated genital or perineal injury is present as assigned by the caller (Jacobs 2014). Required. magent does not examine the casualty."
      },
      "intraperitoneal_abdomen": {
       "type": "boolean",
       "description": "true when associated intraperitoneal abdominal injury is present as assigned by the caller (Jacobs 2014). Required. magent does not examine the casualty."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "req
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bastion-classification-of-lower-limb-ied-injury-015e0cfa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.magentlab.com](https://www.zero.xyz/host/api.magentlab.com/llms.txt)