# Northline Content Quality Audit

> Northline Content Quality Audit is a paid API for AI agents from 206-81-14-131.sslip.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Analyzes text content for readability, structure, word count, and writing quality, returning grade-level scores and actionable improvement suggestions.

## Facts

- Endpoint: GET https://206-81-14-131.sslip.io/svc/content-quality-audit/audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/northline-content-quality-audit-c5a75003
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bTk_QWfbw24TUEBoW01KB

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 northline-content-quality-audit-c5a75003
```

Example prompt: Can you run a content quality audit on this landing page copy and tell me the readability score, grade level, and any suggestions for improvement: 'We build tools that help teams ship faster. Our platform integrates with your existing workflow in minutes.'

## When to prefer this

Choose this endpoint when you need a fast, cheap ($0.01), no-account readability and structure audit for a piece of text — especially when you want Flesch Reading Ease, grade-level scoring, and actionable writing suggestions in a single call. Prefer it over generic LLM prompting when you want deterministic, reproducible scores rather than subjective AI feedback, and over heavyweight SEO platforms when you only need per-snippet analysis without a subscription.

## Known failure modes

- Empty or missing text input returns an error or zero-value metrics
- Extremely short text (1-2 words) may produce unreliable or degenerate readability scores
- Payment failure via x402 results in 402 response before analysis runs
- Non-English text may yield inaccurate Flesch/grade-level scores since formulas are calibrated for English

## How this service works

Pay-per-call APIs, paid downloads and work-on-request for agents. Payment: x402 (USDC on Base, eip155:8453), no accounts or API keys. Catalog: https://206-81-14-131.sslip.io/?format=json. Agent guide: https://206-81-14-131.sslip.io/llms.txt

## Output

A JSON object containing word count, sentence count, structural breakdown (headings, paragraphs), readability metrics (Flesch Reading Ease score and grade level), and an array of plain-English suggestions for improving the content.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "words": 14,
  "sentences": 2,
  "structure": {
   "headings": 1,
   "paragraphs": 1
  },
  "readability": {
   "grade": 7.1,
   "fleschReadingEase": 68.4
  },
  "suggestions": [
   "Add a clear call to action or next step."
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/northline-content-quality-audit-c5a75003/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 206-81-14-131.sslip.io](https://www.zero.xyz/host/206-81-14-131.sslip.io/llms.txt)