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x402node Readability Scorer
x402
x402node Readability Scorer is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Computes multiple English text readability scores (Flesch, Flesch-Kincaid, ARI, Coleman-Liau, Gunning Fog, SMOG) plus complexity stats and reading-level interpretation
Price / call$0.005
Success—
StatusUnknown
How this service works
Compute readability scores for English text (Flesch Reading Ease, Flesch-Kincaid Grade, ARI, Coleman-Liau, Gunning Fog, SMOG). Returns all indices plus complexity stats and reading-level interpretation. Use ?text=Your+text+here. Built for AI agents auditing content clarity and grade-level fit. Accepts payment on Base or Solana — either network works.
Output
Returns all six readability indices (Flesch Reading Ease, Flesch-Kincaid Grade, ARI, Coleman-Liau, Gunning Fog, SMOG), along with complexity statistics (sentence count, word count, syllable count, avg sentence length, avg syllables per word) and a plain-English reading-level interpretation.
Example use cases
Simplify marketing copy for broader audience
“I need to make sure my website copy is accessible to everyone. Can you analyze this text and tell me if it's too complex? 'Our proprietary synergistic methodology optimizes stakeholder engagement through multi-channel digital transformation initiatives.' What grade level is it, and should I rewrite it to be simpler?”
Verify academic paper readability standards
“I'm reviewing submissions for our journal and need to check if they meet our readability guidelines. Can you score this abstract for me and let me know if it's appropriate for a general academic audience or if it's too technical? 'The polymerization kinetics of amphiphilic block copolymers in aqueous media demonstrates phase-separation behavior contingent upon critical micelle concentration parameters.'”
Audit customer support documentation clarity
“We're updating our help articles and I want to make sure customers can actually understand them. Can you check how readable this instruction is and tell me what reading level it targets? 'To execute a system rollback, navigate to the administrative console, select versioning protocols, and invoke the restore function corresponding to your desired checkpoint.'}”
Technical details
Endpoint
GEThttps://api.x402node.dev/nlp/readabilityWhen to prefer
Use this endpoint when you need multiple standardized readability scores in a single call rather than computing them individually. Ideal for AI agents auditing content clarity, checking grade-level appropriateness, or comparing readability across multiple texts. Prefer over manual computation or single-metric tools when you need a full suite of indices plus a human-readable interpretation.
Side effects
- Empty or missing text input returns error
- Non-English text may produce inaccurate scores since indices are calibrated for English
- Extremely short text (1-2 words) may yield unreliable scores
- Network timeout or upstream service unavailability
- Payment failure due to insufficient USDC balance
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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