# Case Study Paragraph Change Report

> Case Study Paragraph Change Report is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Generates a structured paragraph-level change report comparing two versions of a case study document supplied as Markdown or plain text.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-writing-case-study-change-report?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/case-study-paragraph-change-report-18b6179e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xKB4WLcsndeOfq3vf6qAM

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 case-study-paragraph-change-report-18b6179e -d '<json body>'
```

Example prompt: Here's my updated case study and the previous version — can you generate a paragraph change report showing exactly what changed between the two drafts?

## When to prefer this

Choose this endpoint when you need a deterministic, template-based paragraph change report specifically for case study documents, and you have both a current and previous version of the text. It is ideal when you need a bounded, structured diff deliverable at low cost ($0.01 USDC) without generative AI rewriting. Prefer this over generic diff tools when the output needs to be formatted as a professional document change report rather than a raw line diff.

## Known failure modes

- Text exceeds 20,000 character limit — request will be rejected or truncated
- Previous text not supplied — comparison cannot be performed, may return empty or error
- Non-text binary content submitted — endpoint only handles Markdown or plain text
- Malformed input schema — missing required 'text' field returns validation error
- Empty or near-identical documents — report may return minimal or no changes

## How this service works

Case study - Paragraph change report: Paragraph change report for Case study. Supplied Markdown or plain text, up to 20,000 characters. Deterministic processing and document templates; no generative prose or fact checking. One of 25 profiles or calculations across 20 shared operations in this sector. 0.01 USDC includes one bounded paragraph change report deliverable.

## Output

A bounded paragraph change report deliverable that identifies and describes changes between the supplied current and previous versions of a case study document, organized at the paragraph level. The report covers additions, removals, and modifications across the Challenge, Solution, Results, and any other sections present in the supplied Markdown or plain text (up to 20,000 characters each). Processing is deterministic and template-based — no generative prose or fact checking is applied.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "default": "## Challenge\nExample 1 content.\nTODO: review the supplied document by 2026-10-10.\n\n## Solution\nExample 2 content.\nTODO: review the supplied document by 2026-10-10.\n\n## Results\nExample 3 content.\nTODO: review the supplied document by 2026-10-10.",
   "maxLength": 20000
  },
  "previous_text": {
   "type": "string",
   "default": "## Challenge\nEarlier supplied content.",
   "maxLength": 20000
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/case-study-paragraph-change-report-18b6179e/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)