# Language Routing Grouped Three-Fold Baseline Evaluation

> Language Routing Grouped Three-Fold Baseline Evaluation is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-15).

Runs a grouped three-fold cross-validation using a naive-Bayes baseline model on up to 200 labelled text records to evaluate language routing accuracy across English, French, Spanish, and Other classes.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-ml-language-routing-cross-validation?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/language-routing-grouped-three-fold-baseline-evaluation-7370fcf6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sgl_Lidr-kuZ1kNGooUL7

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 language-routing-grouped-three-fold-baseline-evaluation-7370fcf6 -d '<json body>'
```

Example prompt: Can you run a grouped three-fold baseline cross-validation on my language-labelled text records? I have about 50 documents labelled as english, french, spanish, or other — here they are: [{"id":"doc-1","text":"Bonjour tout le monde","actual":"french"}, ...].

## When to prefer this

Choose this endpoint when you need a cheap, quick baseline cross-validation score for a language routing task over up to 200 labelled records without access to hosted models or foundation model training. It is ideal for benchmarking data quality, establishing a naive-Bayes performance floor before investing in more sophisticated models, or satisfying academic/reporting requirements for a cross-validation baseline. Not suitable for large datasets or production model training.

## Known failure modes

- Too few records supplied (minimum 2 required)
- Exceeding 200 record limit returns an error
- Invalid or missing 'actual' enum values outside allowed set (english, french, spanish, other)
- Missing required fields (id, text, actual) in any record
- Unbalanced class distribution may produce unreliable fold metrics
- Payment not processed via x402 protocol returns 402 error

## How this service works

Language routing - Grouped three-fold baseline evaluation: Grouped three-fold baseline evaluation for Language routing. 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 grouped three-fold baseline evaluation deliverable.

## Output

Returns a grouped three-fold cross-validation evaluation report for a naive-Bayes language routing baseline, including per-fold accuracy metrics and overall performance scores across the English, French, Spanish, and Other language classes, based on the supplied labelled text records.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "records": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "id",
     "text",
     "actual"
    ],
    "properties": {
     "id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "text": {
      "type": "string",
      "default": "",
      "maxLength": 1000
     },
     "actual": {
      "enum": [
       "english",
       "french",
       "spanish",
       "other"
      ],
      "type": "string"
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "id": "example-0-0",
     "text": "english sample document number 0 for this supplied dataset.",
     "actual": "english"
    },
    {
     "id": "example-0-1",
     "text": "english sample document number 1 for this supplied dataset.",
     "actual": "english"
    },
    {
     "id": "example-0-2",
     "text": "english sample document number 2 for this supplied dataset.",
     "actual": "english"
    },
    {
     "id": "example-1-0",
     "text": "french sample document number 0 for this supplied dataset.",
     "actual": "french"
    },
    {
     "id": "example-1-1",
     "text": "french sample document number 1 for this supplied dataset.",
     "actual": "french"
    },
    {
     "id": "example-1-2",
     "text": "french sample document number 2 for this supplied dataset.",
     "actual": "french"
    },
    {
     "id": "example-2-0",
     "text": "spanish sample document number 0 for this supplied dataset.",
     "actual": "spanish"
    },
    {
     "id": "example-2-1",
     "text": "spanish sample document number 1 for this supplied dataset.",
     "actual": "spanish"
    },
    {
     "id": "example-2-2",
     "text": "spanish sample document number 2 for this supplied dataset.",
     "actual": "spanish"
    },
    {
     "id": "example-3-0",
     "text": "other sample document number 0 for this supplied dataset.",
     "actual": "other"
    },
    {
     "id": "example-3-1",
     "text": "other sample document number 1 for this supplied dataset.",
     "actual": "other"
    },
    {
     "id": "example-3-2",
     "text": "other sample document number 2 for this supplied dataset.",
     "actual": "other"
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/language-routing-grouped-three-fold-baseline-evaluation-7370fcf6/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)