# ApexAPI Text Readability Analyzer

> ApexAPI Text Readability Analyzer is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.197271/call, status unknown (last checked 2026-10-11).

Analyzes a block of text and returns readability scores and metrics to assess how easy it is to read

## Facts

- Endpoint: POST https://apex-api-gamma.vercel.app/api/tools/text/readability?utm_source=zero.xyz
- Price: $0.197271/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apexapi-text-readability-analyzer-ed81f874
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9z_H9SaImZcNjA9_pGpq1

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 apexapi-text-readability-analyzer-ed81f874 -d '<json body>'
```

Example prompt: Can you check the readability of this paragraph and tell me what grade level it's written at: 'The exacerbation of socioeconomic disparities precipitates compounded systemic vulnerabilities across marginalized demographic cohorts.'

## When to prefer this

Use this endpoint when you need a quick, pay-per-call readability assessment without setting up API keys. Ideal for content editors, AI writing assistants, or automated pipelines that need to flag overly complex text before publishing.

## Known failure modes

- Empty or missing query string returns an error
- Text too short for meaningful readability analysis
- Unsupported language or character encoding causing parsing failure
- Rate limiting or payment failure preventing call execution

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns readability metrics for the submitted text, likely including scores such as Flesch Reading Ease, Flesch-Kincaid Grade Level, and other complexity indicators showing how difficult the text is to read.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apexapi-text-readability-analyzer-ed81f874/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apex-api-gamma.vercel.app](https://www.zero.xyz/host/apex-api-gamma.vercel.app/llms.txt)