# CoCo Readability Analyzer

> CoCo Readability Analyzer is a paid API for AI agents from cocoeatsai.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-19).

Computes readability scores and text statistics (Flesch, Gunning Fog, grade level, reading/speaking time) for a given English text.

## Facts

- Endpoint: GET https://cocoeatsai.com/area4/agent/tools/readability?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coco-readability-analyzer-8c713846
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bm1w1a5smoKKXikM8NPQe

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 coco-readability-analyzer-8c713846
```

Example prompt: Can you check the readability of this paragraph and tell me the Flesch Reading Ease score, grade level, and estimated reading time: 'The quick brown fox jumps over the lazy dog. Pack my box with five dozen liquor jugs.'

## When to prefer this

Choose this endpoint when you need fast, multi-metric English text readability analysis including Flesch, Gunning Fog, and time estimates in a single call, especially in an x402 micropayment context. Prefer this over manual formula implementations or heavier NLP pipelines when all you need is readability scoring without entity extraction or sentiment.

## Known failure modes

- Missing or empty text input returns an error or zero-value scores
- Non-English text yields inaccurate syllable/readability estimates since the tool is English-only
- Very short inputs (single word or punctuation only) may produce degenerate or nonsensical scores
- Network or payment failure (402) if USDC payment is not properly attached

## How this service works

Zach Riehn's lab: an about-me and portfolio, a news desk, The Atelier for AI experiments, Launch Lab for XRP research, and Fracture for games.

## Output

A JSON object containing word count, sentence count, syllable count, number of complex words, Flesch Reading Ease score (higher = easier), Flesch-Kincaid grade level, Gunning Fog Index, estimated reading time in minutes, and estimated speaking time in minutes, plus a note that syllable counts are estimated approximations.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ]
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "words"
     ],
     "properties": {
      "words": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "Approximate English-language scores; syllables are estimated, not a comprehension test.",
  "words": 11,
  "sentences": 2,
  "syllables": 14,
  "gunning_fog": 5.8,
  "complex_words": 1,
  "reading_time_min": 0.05,
  "speaking_time_min": 0.07,
  "flesch_reading_ease": 93.6,
  "flesch_kincaid_grade": 1.6
 },
 "exampleNote": "Computed offline with demonstration inputs; time/random values are illustrative."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coco-readability-analyzer-8c713846/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cocoeatsai.com](https://www.zero.xyz/host/cocoeatsai.com/llms.txt)