# Achievement Progress — Adjacent Row Changes + Secondary-Measure Weighted Mean

> Achievement Progress — Adjacent Row Changes + Secondary-Measure Weighted Mean is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-11-02).

Computes adjacent row-over-row changes and a secondary-measure weighted mean for achievement progress records (eligible_players, unlocks) on up to 200 supplied rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-game-19-159?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/achievement-progress-adjacent-row-changes-secondary-measure-weighted-870b392b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_l7FWp3c_U58wHQIkgPn2o

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 achievement-progress-adjacent-row-changes-secondary-measure-weighted-870b392b -d '<json body>'
```

Example prompt: Run two analytical reports on my achievement progress data — adjacent row changes and a weighted mean of unlocks — for these 4 records: row-1 on 2026-10-01 with eligible_players=10 and unlocks=1 in group-a, row-2 on 2026-10-02 with eligible_players=20 and unlocks=2 in group-b, row-3 on 2026-10-03 with eligible_players=15 and unlocks=3 in group-a, row-4 on 2026-10-04 with eligible_players=30 and unlocks=4 in group-b, using eligible_players as the primary field.

## When to prefer this

Choose this endpoint when you have tabular achievement progress data (eligible_players, unlocks) and need both sequential/adjacent row difference analysis AND a weighted mean statistic in a single cheap call. It is best for offline/batch analytical work on supplied datasets up to 200 rows, where no live game data lookup or external enrichment is needed. Prefer it over general-purpose analytics tools when cost is a concern ($0.01 USDC for two reports).

## Known failure modes

- More than 200 rows submitted — request exceeds maxItems limit
- Missing required fields (row_id, game_area, date, eligible_players, or unlocks) on any row
- Invalid date format — must match YYYY-MM-DD pattern
- Numeric values outside allowed range (-1,000,000,000,000 to 1,000,000,000,000)
- Invalid field enum value — must be 'eligible_players' or 'unlocks'
- Empty rows array — minItems is 1

## How this service works

Achievement progress — Adjacent row changes + Secondary-measure weighted mean: Adjacent row changes + Secondary-measure weighted mean for supplied achievement progress records (eligible_players, unlocks). 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 analytical reports on the supplied achievement progress rows: (1) adjacent row changes showing sequential differences between consecutive records for the chosen field, and (2) a secondary-measure weighted mean using eligible_players and unlocks. Results are computed locally against supplied data only — no external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/achievement-progress-adjacent-row-changes-secondary-measure-weighted-870b392b/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)