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ONE Engine Word Count API
x402
ONE Engine Word Count API is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0009/call, status unknown (last checked 2026-10-02).
Counts the number of words and characters in a given text string, returning both metrics as a JSON response.
Price / call$0.0009
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
A JSON object containing two fields: 'words' (integer count of words in the input text) and 'characters' (integer count of characters in the input text). Example: {"words": 3, "characters": 20}.
Example use cases
Essay length validation before submission
“Check if my college application essay is within the 650-word limit — here's the text: 'It was a humid August morning when I first realized that the kitchen was my classroom...' [full essay text]”
Content quota enforcement for social posts
“Count the words in this draft LinkedIn post so I know if it's under 300 words: 'Excited to announce that after three years of building in stealth...'”
Billing by word count for translation pipeline
“How many words are in this source document so I can estimate translation cost? Here's the text: 'Our terms of service govern your use of the platform and all associated services...'”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v1/text/word-count?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cheap, fast, on-demand word and character count for text up to 50,000 characters in an autonomous agent pipeline. At $0.0009 per call via x402 on Base, it is ideal for pay-per-use workflows where spinning up a local NLP library or calling a heavyweight API would be overkill. Prefer this over general LLM-based counting (which is slow and expensive) or building custom string-processing logic.
Side effects
- Text exceeds 50,000 character limit — request rejected or truncated
- Empty text input — may return zero counts or an error
- Missing 'text' field in request body — returns validation error
- Payment failure via x402 — 402 response if USDC payment not provided or insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Text up to 50000 characters |
Output
Schema · Response
{
"type": "json",
"example": {
"words": 3,
"characters": 20
}
}Tags
x402
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