# Arch Tools Readability Score

> Arch Tools Readability Score is a paid API for AI agents from archtools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Analyzes a block of text and returns a readability score indicating how easy or difficult it is to read

## Facts

- Endpoint: POST https://archtools.dev/v1/tools/readability-score
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arch-tools-readability-score-0a41b6b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0hVG4k9XCh9aLhIbW1Nvh

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 arch-tools-readability-score-0a41b6b6 -d '<json body>'
```

Example prompt: Can you check how readable this paragraph is: 'The utilization of obfuscatory vernacular in ostensibly quotidian discourse precipitates communicative dysfunction amongst interlocutors of disparate educational provenance.' I want to know if it's too complex for a general audience.

## When to prefer this

Choose this endpoint when you need a quick, programmatic readability score for a piece of text as part of an agent workflow — especially when integrated with the broader Arch Tools suite for content analysis pipelines. It is ideal for content quality gates, editorial checks, accessibility assessments, or automated grading systems where you need a numeric readability signal without setting up a full NLP stack.

## Known failure modes

- Empty or missing 'text' field returns a validation error
- Extremely short text (single word or character) may produce unreliable or degenerate scores
- Very large text payloads may be rejected or truncated
- Payment failure (insufficient USDC balance) results in 402 response
- Non-UTF-8 or malformed string input may cause parsing errors

## How this service works

Arch Tools — readability-score

## Output

Returns a JSON object containing a readability score and likely associated metrics such as grade level, reading ease score, and complexity indicators for the submitted text, helping determine how accessible the content is to a target audience.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to analyze for readability"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arch-tools-readability-score-0a41b6b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from archtools.dev](https://www.zero.xyz/host/archtools.dev/llms.txt)