# School Reading Difficulty Estimator

> School 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 2026-10-17).

Estimates the Flesch reading ease score of a given text using a syllable heuristic, tailored for school and educational workflows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/reading-level-school?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/school-reading-difficulty-estimator-5777820e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__-StCapHC7kHkQu-ujcJe

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 school-reading-difficulty-estimator-5777820e -d '<json body>'
```

Example prompt: Can you estimate the Flesch reading difficulty score for this text: 'Short sentences can make a document easier to read. Students benefit from clear and simple language in their textbooks.'?

## When to prefer this

Choose this endpoint when you need a fast, low-cost Flesch readability score specifically within a school or educational workflow context, and you don't require a full-featured NLP library or grade-level label — just a quick syllable-heuristic estimate of reading difficulty.

## Known failure modes

- Empty or missing text field returns an error or undefined score
- Very short text (single word) may produce unreliable or extreme scores
- Non-English text may yield inaccurate syllable counts and distorted scores
- Extremely long text may hit payload limits or timeout
- Payment failure (402) if USDC balance is insufficient

## How this service works

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

## Output

Returns a Flesch reading ease score computed via syllable heuristics on the submitted text, indicating how easy or difficult the passage is to read. Higher scores indicate easier text, lower scores indicate harder text, calibrated for school-level use.

## 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/school-reading-difficulty-estimator-5777820e/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)