# Tutoring Reading Difficulty Estimator

> Tutoring Reading Difficulty Estimator is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Estimates a Flesch reading ease score for a given text passage using a syllable-counting heuristic, optimized for tutoring workflows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/reading-level-tutoring?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/tutoring-reading-difficulty-estimator-10dec3f6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1HbQtxaHgRUAwrfzA6Y6l

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 tutoring-reading-difficulty-estimator-10dec3f6 -d '<json body>'
```

Example prompt: Can you estimate the Flesch reading difficulty score for this paragraph: 'Short sentences can make a document easier to read. Complex vocabulary increases cognitive load for younger learners.'?

## When to prefer this

Choose this endpoint when you need a fast, lightweight Flesch readability score for educational or tutoring content and don't require a full NLP pipeline. It's ideal for tutoring platforms, curriculum tools, or content editors that need a quick grade-level signal without heavy infrastructure. Prefer it over general NLP APIs when cost-efficiency and simplicity matter more than multi-metric readability analysis.

## Known failure modes

- Empty or missing text field returns an error or default score
- Very short inputs (single words) may produce unreliable scores due to insufficient statistical sample
- Non-English text may yield inaccurate syllable counts and misleading scores
- Extremely long texts may be truncated or time out
- Network or payment authorization failures return a non-200 status

## How this service works

Tutoring Reading difficulty estimator: Estimate a Flesch reading score using a simple syllable heuristic. Tailored for tutoring workflows.

## Output

Returns a numerical Flesch reading ease score computed via a syllable-counting heuristic, indicating how easy or difficult the input text is to read. Higher scores indicate easier text; lower scores indicate more complex, harder-to-read content.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "default": "Short sentences can make a document easier to read."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tutoring-reading-difficulty-estimator-10dec3f6/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)