# Proposal Preparation Analytics — Adjacent Row Changes + Equal-Width Histogram

> Proposal Preparation Analytics — Adjacent Row Changes + 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 two statistical reports (adjacent row changes and equal-width histogram) on proposal preparation data (completed_sections, planned_sections) for up to 200 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-writing-08-156?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/proposal-preparation-analytics-adjacent-row-changes-equal-width-85643085
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-4lXC8Nhcp33paGZgzS_A

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 proposal-preparation-analytics-adjacent-row-changes-equal-width-85643085 -d '<json body>'
```

Example prompt: Run adjacent row changes and an equal-width histogram with 10 bins on the completed_sections field for my proposal data: [{"date":"2025-01-01","row_id":"p1","document_group":"group-a","completed_sections":5,"planned_sections":10},{"date":"2025-01-02","row_id":"p2","document_group":"group-a","completed_sections":8,"planned_sections":10},{"date":"2025-01-03","row_id":"p3","document_group":"group-b","completed_sections":3,"planned_sections":12}].

## When to prefer this

Choose this endpoint when you need two quick statistical views — row-over-row deltas and a frequency distribution — on proposal preparation data (completed_sections or planned_sections) without needing live data, predictions, or external enrichment. It is ideal for offline batch analysis of up to 200 proposal records at very low cost ($0.01 USDC for both reports). Prefer alternatives if you need grouped summaries, outlier detection, or analysis on non-proposal data fields.

## Known failure modes

- More than 200 rows submitted — request will be rejected or truncated
- Invalid date format (not YYYY-MM-DD) causes schema validation failure
- Missing required fields (row_id, document_group, date, completed_sections, planned_sections) causes row rejection
- bins value outside 1–30 range causes validation error
- Null values in the selected field may affect histogram binning or delta computation
- Empty rows array causes failure due to minItems:1 constraint

## How this service works

Proposal preparation — Adjacent row changes + Equal-width histogram: Adjacent row changes + Equal-width histogram for supplied proposal preparation records (completed_sections, planned_sections). 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

Two independent analytical reports: (1) an adjacent row changes report showing the delta in the selected field (completed_sections or planned_sections) between consecutive rows, and (2) an equal-width histogram with the requested number of bins showing the frequency distribution of that field across all supplied rows. Both reports are computed locally from the supplied data with no external lookups.

## 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",
     "document_group",
     "date",
     "completed_sections",
     "planned_sections"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "document_group": {
      "type": "string",
      "default": "",
      "maxLength": 80
     },
     "planned_sections": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "completed_sections": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "document_group": "group-a",
     "planned_sections": 1,
     "completed_sections": 10
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "document_group": "group-b",
     "planned_sections": 2,
     "completed_sections": 20
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "document_group": "group-a",
     "planned_sections": 3,
     "completed_sections": 15
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "document_group": "group-b",
     "planned_sections": 4,
     "completed_sections": 30
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "completed_sections",
    "planned_sections"
   ],
   "type": "string",
   "default": "completed_sections"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/proposal-preparation-analytics-adjacent-row-changes-equal-width-85643085/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)