# Image Reference Inventories — String Normalisation + Equal-Width Histogram

> Image Reference Inventories — String Normalisation + Equal-Width Histogram is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-26).

Runs string normalisation and equal-width histogram analysis on image reference inventory records (image_count, missing_alt_count) for up to 200 rows, returning two local analytical reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-web-18-031?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-26
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/image-reference-inventories-string-normalisation-equal-width-histogram-c06f843e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__QgQydU9xak-M3oh0S9vx

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 image-reference-inventories-string-normalisation-equal-width-histogram-c06f843e -d '<json body>'
```

Example prompt: Run string normalisation and a 10-bin equal-width histogram on my image inventory data — I have records with image_count and missing_alt_count fields across site groups like 'group-a' and 'group-b', and I want to analyze the image_count field across about 50 rows.

## When to prefer this

Choose this endpoint when you need lightweight, local string normalisation combined with equal-width histogram analysis on image reference inventory data without any external lookups or predictions. Ideal for content auditors, SEO analysts, or accessibility reviewers who want fast, offline statistical summaries of image counts and missing alt text distributions across site groups, for datasets up to 200 rows, at minimal cost ($0.01 USDC for both reports).

## Known failure modes

- Exceeds 200 row limit — request rejected
- Invalid date format (must match YYYY-MM-DD pattern)
- Missing required fields (row_id, site_group, date, image_count, missing_alt_count)
- Bins parameter out of range (must be 1–30)
- Invalid field enum value (must be image_count or missing_alt_count)
- Null-only numeric column causes histogram computation failure

## How this service works

Image reference inventories — String normalisation + Equal-width histogram: String normalisation + Equal-width histogram for supplied image reference inventories records (image_count, missing_alt_count). Up to 200 rows; 2 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 2 supplied-data reports for up to 200 rows.

## Output

Returns two analytical reports: (1) a string normalisation report cleaning and standardising text values in the selected field, and (2) an equal-width histogram showing frequency distribution of image_count or missing_alt_count values across user-defined bins (1–30 bins), covering up to 200 input rows.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "bins": {
   "type": "integer",
   "default": 5,
   "maximum": 30,
   "minimum": 1
  },
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "site_group",
     "date",
     "image_count",
     "missing_alt_count"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "site_group": {
      "type": "string",
      "default": "",
      "maxLength": 80
     },
     "image_count": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "missing_alt_count": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "site_group": "group-a",
     "image_count": 10,
     "missing_alt_count": 1
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "site_group": "group-b",
     "image_count": 20,
     "missing_alt_count": 2
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "site_group": "group-a",
     "image_count": 15,
     "missing_alt_count": 3
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "site_group": "group-b",
     "image_count": 30,
     "missing_alt_count": 4
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "image_count",
    "missing_alt_count"
   ],
   "type": "string",
   "default": "image_count"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/image-reference-inventories-string-normalisation-equal-width-histogram-c06f843e/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)