# NCI CTC v2.0 Mucositis Due to Radiation Grade Lookup

> NCI CTC v2.0 Mucositis Due to Radiation Grade Lookup is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Converts a caller-assigned mucosal appearance description into an NCI CTC v2.0 mucositis-due-to-radiation numeric grade (0–4)

## Facts

- Endpoint: GET https://api.magentlab.com/api/calc/nci_ctc_mucositis
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nci-ctc-v2-0-mucositis-due-to-radiation-grade-lookup-d25d4f35
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TYchYWgmBoc046xFo-U16

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 nci-ctc-v2-0-mucositis-due-to-radiation-grade-lookup-d25d4f35
```

Example prompt: Look up the NCI CTC v2.0 mucositis-due-to-radiation grade for a patient whose mucosa shows confluent pseudomembranous reaction with contiguous patches greater than 1.5 cm.

## When to prefer this

Use this endpoint when you need to programmatically convert a caller-observed mucosal appearance into the NCI CTC v2.0 mucositis-due-to-radiation numeric grade per Trotti 2000. Prefer this over manual lookup tables when integrating grading into clinical trial pipelines, adverse event reporting systems, or oncology dashboards. Do not use this for CTCAE v3/v4/v5 grading, WHO mucositis, CTC stomatitis/pharyngitis, or as a diagnostic tool — the caller must assign the appearance themselves based on physical examination.

## Known failure modes

- Invalid or unrecognized appearance value returns an error — only the five defined enum values are accepted
- Missing required 'appearance' query parameter causes a request failure
- Caller-assigned appearance that does not match any enum value (e.g. typo or unsupported staging system term) will not be resolved

## How this service works

NCI CTC v2.0 Mucositis due to radiation (Trotti 2000). none → 0; erythema → 1; patchy_pseudomembrane (≤1.5 cm, noncontiguous) → 2; confluent_pseudomembrane (contiguous >1.5 cm) → 3; necrosis_or_deep_ulcer (may include bleeding not induced by minor trauma) → 4. magent does not examine the mucosa. Not CTC stomatitis/pharyngitis, CTCAE v3/v4/v5, or WHO mucositis. Not a diagnosis or medical device.

## Output

Returns the NCI CTC v2.0 mucositis-due-to-radiation numeric grade (0 for none, 1 for erythema, 2 for patchy pseudomembrane, 3 for confluent pseudomembrane, 4 for necrosis or deep ulceration) corresponding to the supplied appearance string.

## 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": [
      "appearance"
     ],
     "properties": {
      "appearance": {
       "type": "string",
       "description": "NCI CTC v2.0 Mucositis due to radiation appearance as assigned by the caller: none (grade 0), erythema (grade 1, erythema of the mucosa), patchy_pseudomembrane (grade 2, patchy pseudomembranous reaction, patches generally ≤1.5 cm and noncontiguous), confluent_pseudomembrane (grade 3, confluent pseudomembranous reaction, contiguous patches generally >1.5 cm), or necrosis_or_deep_ulcer (grade 4, necrosis or deep ulceration; may include bleeding not induced by minor trauma or abrasion). Case-insensitive. Not CTC stomatitis/pharyngitis. magent does not examine the mucosa."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nci-ctc-v2-0-mucositis-due-to-radiation-grade-lookup-d25d4f35/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)