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api.24klabs.ai api readability-score
https://api.24klabs.ai/api/readability-score
payable
Word/sentence/syllable counts, reading time, plus Flesch Reading Ease, Flesch-Kincaid, Gunning Fog, SMOG, ARI, and Coleman-Liau grade levels in one call.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.002
- Network
- base
- Pay to
- 0xe73D86f185bE79a33b0318d881B71f2a24371114
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 154 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:12:36.113Z (1d ago)
- Category
- web-scraping
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.24klabs.ai%2Fapi%2Freadability-score"