# Release Change Multiclass Brier Score

> Release Change Multiclass Brier Score is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Computes the multiclass Brier score for a release-change classifier (feature/fix/documentation/maintenance) given up to 200 labelled text records with predicted probabilities.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-ml-release-change-brier?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/release-change-multiclass-brier-score-842d6dad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_l_AVzGfYbmIw9QvWPbHc-

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 release-change-multiclass-brier-score-842d6dad -d '<json body>'
```

Example prompt: Calculate the multiclass Brier score for my release-change classifier — here are 50 labelled records where each has the text, the actual label (feature, fix, documentation, or maintenance), the predicted label, and the four class probabilities from my model.

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call multiclass Brier score calculation specifically for release-change classification (feature/fix/documentation/maintenance) without needing to set up your own evaluation infrastructure. Ideal for quick benchmarking of local models or naive-Bayes baselines on small datasets up to 200 records. Prefer over general-purpose ML platforms when cost and simplicity matter and the label set matches exactly.

## Known failure modes

- Records array is empty or missing — returns validation error
- Probabilities array does not contain exactly 4 values per record — returns schema error
- Probability values outside [0,1] range — rejected by schema validation
- Actual or predicted label not in allowed enum (feature, fix, documentation, maintenance) — schema rejection
- More than 200 records submitted — exceeds maximum batch limit
- Payment of 0.01 USDC not completed — 402 Payment Required response

## How this service works

Release change - Multiclass Brier score: Multiclass Brier score for Release change. Up to 200 supplied labelled text records. Local dataset tools, evaluation and small naive-Bayes baselines; no hosted model or foundation-model training. One of 25 profiles or calculations across 20 shared operations in this sector. 0.01 USDC includes one bounded multiclass brier score deliverable.

## Output

Returns the multiclass Brier score — a single bounded numeric metric quantifying the mean squared error between predicted class probabilities and one-hot encoded actual labels across all submitted records and classes. Lower scores indicate better probabilistic predictions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "records": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "id",
     "text",
     "actual",
     "predicted",
     "probabilities"
    ],
    "properties": {
     "id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "text": {
      "type": "string",
      "default": "",
      "maxLength": 1000
     },
     "actual": {
      "enum": [
       "feature",
       "fix",
       "documentation",
       "maintenance"
      ],
      "type": "string"
     },
     "predicted": {
      "enum": [
       "feature",
       "fix",
       "documentation",
       "maintenance"
      ],
      "type": "string"
     },
     "probabilities": {
      "type": "array",
      "items": {
       "type": "number",
       "default": 0,
       "maximum": 1,
       "minimum": 0
      },
      "default": [],
      "maxItems": 4,
      "minItems": 4
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "id": "example-0-0",
     "text": "feature sample document number 0 for this supplied dataset.",
     "actual": "feature",
     "predicted": "feature",
     "probabilities": [
      0.8,
      0.06666666666666667,
      0.06666666666666667,
      0.06666666666666667
     ]
    },
    {
     "id": "example-0-1",
     "text": "feature sample document number 1 for this supplied dataset.",
     "actual": "feature",
     "predicted": "feature",
     "probabilities": [
      0.8,
      0.06666666666666667,
      0.06666666666666667,
      0.06666666666666667
     ]
    },
    {
     "id": "example-0-2",
     "text": "feature sample document number 2 for this supplied dataset.",
     "actual": "feature",
     "predicted": "feature",
     "probabilities": [
      0.8,
      0.06666666666666667,
      0.06666666666666667,
      0.06666666666666667
     ]
    },
    {
     "id": "example-1-0",
     "text": "fix sample document number 0 for this supplied dataset.",
     "actual": "fix",
     "predicted": "fix",
     "probabilities": [
      0.06666666666666667,
      0.8,
      0.06666666666666667,
      0.06666666666666667
     ]
    },
    {
     "id": "example-1-1",
     "text": "fix sample document number 1 for this supplied dataset.",
     "actual": "fix",
     "predicted": "fix",
     "probabilities": [
      0.06666666666666667,
      0.8,
      0.06666666666666667,
      0.06666666666666667
     ]
    },
    {
     "id": "example-1-2",
   
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/release-change-multiclass-brier-score-842d6dad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)