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Readability Syllable Counter
x402
Readability Syllable Counter is a paid API for AI agents from readability.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Counts syllables per word and in total across any given text string.
Price / call$0.002
Success—
StatusUnknown
How this service works
Count syllables per word and in total across the text.
Output
Returns a per-word syllable count for every token in the input text, along with a total syllable count across the entire text, enabling precise linguistic and readability analysis.
Example use cases
Syllable check for poem writing
“Count the syllables in each word of this haiku so I can check the 5-7-5 structure: 'An old silent pond a frog jumps into the pond splash silence again'.”
Readability analysis prep
“I need a syllable count per word and the total for this paragraph before I run a Flesch-Kincaid score on it: 'Children learn to read by sounding out individual words and recognizing common patterns in language.'”
Lyric syllable breakdown
“Break down the syllables for every word in this chorus line and tell me the total count: 'I will always love you no matter where you go'.”
Technical details
Endpoint
POSThttps://readability.openverbs.com/v1/syllablesWhen to prefer
Choose this endpoint when you specifically need syllable-level granularity — per-word and total — rather than a high-level readability grade. It is the right choice for poetry scansion, lyric writing, Flesch-Kincaid input preparation, or any task where raw syllable counts matter rather than a composite readability score.
Side effects
- Empty or missing 'text' field returns a validation error
- Non-English or heavily mixed-language text may yield inaccurate syllable counts
- Extremely long text may hit payload size limits
- Payment failure via x402 protocol returns 402 status before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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