# KiHustle Readability Fog Index API

> KiHustle Readability Fog Index API is a paid API for AI agents from kihustle.tech, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Computes the Gunning Fog Index readability score for a given text, indicating how many years of education are needed to understand it on first reading.

## Facts

- Endpoint: POST https://kihustle.tech/agents/api/v1/readability-fog-index
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kihustle-readability-fog-index-api-f8ae4861
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_foXhD_Hv_BQtDqW_UJbsw

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 kihustle-readability-fog-index-api-f8ae4861 -d '<json body>'
```

Example prompt: Can you check the readability of this paragraph and give me its Fog Index score? Here's the text: 'The utilization of sophisticated algorithmic methodologies necessitates comprehensive understanding of underlying computational paradigms.'

## When to prefer this

Choose this endpoint when you need a fast, lightweight Fog Index readability score specifically — particularly for English prose like articles, blog posts, or marketing copy. Prefer it over heavier NLP pipelines when you only need the Gunning Fog metric rather than a suite of readability scores (Flesch-Kincaid, SMOG, Coleman-Liau, etc.).

## Known failure modes

- Empty or missing text field returns an error or zero score
- Extremely short text (fewer than 2 sentences) may produce unreliable or degenerate scores
- Non-English text may yield inaccurate results since Fog Index is calibrated for English
- Very long text inputs may exceed size limits or increase latency
- Malformed JSON request body returns a 400-level error

## How this service works

Kostenlose Guides, Solo-Playbooks und Artikel zu KI, Automation und Side Hustles — für Menschen, die mit echten Systemen online Einkommen aufbauen wollen. Transparent finanziert über faire Affiliate-Links.

## Output

Returns a JSON object with a result field containing the computed Gunning Fog Index score (a numeric value indicating required years of education) and a status field confirming successful processing.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "processed",
  "status": "success"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kihustle-readability-fog-index-api-f8ae4861/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kihustle.tech](https://www.zero.xyz/host/kihustle.tech/llms.txt)