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Word Frequency Analyzer with Stopword Filtering
x402
Word Frequency Analyzer with Stopword Filtering is a paid API for AI agents from energybilltoolkit.co.uk, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Returns normalized top-N token frequency counts with optional stopword filtering for a given text input.
Price / call$0.001
Success—
StatusUnknown
How this service works
Return normalized top-N token frequency with optional stopword filtering.
Output
A ranked list of up to N tokens, each with an integer count and a normalized frequency share (proportion of total meaningful tokens), sorted by frequency descending.
Example use cases
Example prompt
“What are the top 10 most frequent meaningful words in this customer review, ignoring stopwords: 'The battery life on this phone is outstanding. The screen is bright and the performance is smooth, but the camera quality is average at best.'?”
Technical details
Endpoint
POSThttps://energybilltoolkit.co.uk/text-metrics/api/tools/word-frequencyWhen to prefer
Use this endpoint when you need deterministic, normalized word frequency analysis on arbitrary text with optional stopword removal — especially useful for content analysis, keyword extraction, review mining, or any task requiring a quantitative breakdown of token distribution without relying on ML models.
Side effects
- Empty or missing text field returns an error
- n value of 0 or negative may return empty results or an error
- Very short texts may return fewer tokens than requested N
- Non-UTF8 or malformed text encoding may cause parsing errors
- Network timeout for very large text payloads
Input
{
"n": 10,
"text": "The battery life on this phone is outstanding. The screen is bright and the performance is smooth, but the camera quality is average at best. The design feels premium and the user interface is intuitive.",
"stopwords": true
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Text to measure. |
| top_n | integer | |
| include_stopwords | boolean |
Output
{
"top": [
{
"count": 1,
"share": 0.055556,
"token": "battery"
},
{
"count": 1,
"share": 0.055556,
"token": "life"
},
{
"count": 1,
"share": 0.055556,
"token": "phone"
},
{
"count": 1,
"share": 0.055556,
"token": "outstanding"
},
{
"count": 1,
"share": 0.055556,
"token": "screen"
},
{
"count": 1,
"share": 0.055556,
"token": "bright"
},
{
"count": 1,
"share": 0.055556,
"token": "performance"
},
{
"count": 1,
"share": 0.055556,
"token": "smooth"
},
{
"count": 1,
"share": 0.055556,
"token": "camera"
},
{
"count": 1,
"share": 0.055556,
"token": "quality"
},
{
"count": 1,
"share": 0.055556,
"token": "average"
},
{
"count": 1,
"share": 0.055556,
"token": "best"
},
{
"count": 1,
"share": 0.055556,
"token": "design"
},
{
"count": 1,
"share": 0.055556,
"token": "feels"
},
{
"count": 1,
"share": 0.055556,
"token": "premium"
},
{
"count": 1,
"share": 0.055556,
"token": "user"
},
{
"count": 1,
"share": 0.055556,
"token": "interface"
},
{
"count": 1,
"share": 0.055556,
"token": "intuitive"
}
],
"top_n": 20,
"metric": "frequency",
"total_tokens": 18,
"unique_tokens": 18,
"include_stopwords": false
}Tags
x402
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