# API Guide Heading Hierarchy Audit

> API Guide Heading Hierarchy Audit is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Audits the heading hierarchy of an API guide document supplied as Markdown or plain text, checking for structural correctness and ordering.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-writing-api-guide-heading-audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-guide-heading-hierarchy-audit-6946f485
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hNRgT99RExkfjKV9_q7gb

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 api-guide-heading-hierarchy-audit-6946f485 -d '<json body>'
```

Example prompt: Can you audit the heading hierarchy in my API guide draft? Here's the Markdown: '# Introduction
Overview content.
### Authentication
Auth details.
## Endpoints
Endpoint list.'

## When to prefer this

Choose this endpoint when you need a deterministic, rule-based audit of heading hierarchy in an API guide document specifically — it applies no generative AI or fact-checking, making results reproducible and consistent. Ideal for CI/CD pipelines, automated documentation linting, or pre-publish QA workflows where you need structured feedback on heading order and nesting at a very low cost per call.

## Known failure modes

- Input text exceeds 20,000 character limit — request rejected
- Empty or missing text field — no audit performed
- Input is not recognizable as Markdown or plain text — degraded results
- Payment not completed via x402 — request not processed

## How this service works

API guide - Heading hierarchy audit: Heading hierarchy audit for API guide. 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 heading hierarchy audit deliverable.

## Output

A bounded heading hierarchy audit deliverable identifying structural issues such as skipped heading levels, incorrect nesting, or out-of-order headings within the supplied API guide document (up to 20,000 characters).

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-guide-heading-hierarchy-audit-6946f485/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)