# Technical Design – Heading Hierarchy Audit

> Technical Design – 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 2026-10-18).

Audits the heading hierarchy of a technical design document (Markdown or plain text) for structural correctness and consistency.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-writing-technical-design-heading-audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/technical-design-heading-hierarchy-audit-56f2e758
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_G9zg2qshW_5z8hN0nyUGw

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 technical-design-heading-hierarchy-audit-56f2e758 -d '<json body>'
```

Example prompt: Can you audit the heading hierarchy of this technical design document and tell me if there are any structural issues or skipped levels? Here's the content: '## Architecture\nContent here.\n### Components\nMore content.\n##### Details\nSkipped a level here.'

## When to prefer this

Choose this endpoint when you need a fast, deterministic, cost-effective audit of heading hierarchy in a technical design document. It is ideal for pre-publish checks, CI pipelines, or document quality gates where consistency of Markdown heading structure matters and no generative prose or AI interpretation is needed.

## Known failure modes

- Input text exceeds 20,000 character limit — request will be rejected or truncated
- Empty or missing text field — no meaningful audit output returned
- Input contains no headings — audit may return empty or trivial result
- Non-Markdown formatting may reduce accuracy of heading detection

## How this service works

Technical design - Heading hierarchy audit: Heading hierarchy audit for Technical design. 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 deterministic heading hierarchy audit report identifying structural issues such as skipped heading levels, inconsistent nesting, or hierarchy violations within the supplied Markdown or plain text technical design document (up to 20,000 characters).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "default": "## Architecture\nExample 1 content.\nTODO: review the supplied document by 2026-10-10.\n\n## Interfaces\nExample 2 content.\nTODO: review the supplied document by 2026-10-10.\n\n## Trade-offs\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/technical-design-heading-hierarchy-audit-56f2e758/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
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