POST /v1/nlp/readability-score
Readability
Flesch, Gunning fog and the rest, with the reading age each one implies.
See how hard text is to read now No key, no code — 3 credits either way.
curl -X POST "$DOATHING_API/v1/nlp/readability-score" \
-H "x-api-key: $DOATHING_KEY" \
-H "content-type: application/json" \
-d '{"text": "Ada Lovelace worked in London for Charles Babbage. She wrote the first algorithm intended for a machine. Her notes described a general-purpose computer a century before one was built."}'
Flesch, Gunning fog and the rest, with the reading age each one implies.
Compute Flesch Reading Ease, Flesch-Kincaid, Gunning fog, SMOG and Coleman-Liau scores.
Input
Send either a text string or a file object. A file is decoded as UTF-8 and must be one of text/plain, text/markdown, text/html, text/csv.
Response
The result carries your remaining balance alongside it, so you can track spend without a second call.
{
"flesch_reading_ease": 52.7,
"flesch_kincaid_grade": 10.4,
"gunning_fog": 12.1,
"words": 38,
"sentences": 3,
"summary": "Fairly difficult — around a 10th to 12th-grade reading level. Flesch-Kincaid puts it at grade 10.4.",
"request_id": "37f01edb-0163-42a1-ac51-0acaef979800",
"credits_remaining": 96
}
Cost
3 credits per call, whether it is run from the site or from the API — the credential differs, the price does not. A new account starts with 20 credits.
A rejected request still costs a credit: the authorizer decrements before the tool validates. A call rejected for a missing or invalid key is free.